mirror of
https://github.com/python/cpython.git
synced 2025-08-03 16:39:00 +00:00
Merge of descr-branch back into trunk.
This commit is contained in:
Tim Peters
parent
52d55a3926
commit
6d6c1a35e0
57 changed files with 6923 additions and 1309 deletions
829
Lib/test/test_descr.py
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829
Lib/test/test_descr.py
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# Test descriptor-related enhancements
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from test_support import verify, verbose
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from copy import deepcopy
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def testunop(a, res, expr="len(a)", meth="__len__"):
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if verbose: print "checking", expr
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dict = {'a': a}
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verify(eval(expr, dict) == res)
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t = type(a)
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m = getattr(t, meth)
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verify(m == t.__dict__[meth])
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verify(m(a) == res)
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bm = getattr(a, meth)
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verify(bm() == res)
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def testbinop(a, b, res, expr="a+b", meth="__add__"):
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if verbose: print "checking", expr
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dict = {'a': a, 'b': b}
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verify(eval(expr, dict) == res)
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t = type(a)
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m = getattr(t, meth)
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verify(m == t.__dict__[meth])
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verify(m(a, b) == res)
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bm = getattr(a, meth)
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verify(bm(b) == res)
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def testternop(a, b, c, res, expr="a[b:c]", meth="__getslice__"):
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if verbose: print "checking", expr
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dict = {'a': a, 'b': b, 'c': c}
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verify(eval(expr, dict) == res)
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t = type(a)
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m = getattr(t, meth)
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verify(m == t.__dict__[meth])
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verify(m(a, b, c) == res)
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bm = getattr(a, meth)
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verify(bm(b, c) == res)
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def testsetop(a, b, res, stmt="a+=b", meth="__iadd__"):
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if verbose: print "checking", stmt
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dict = {'a': deepcopy(a), 'b': b}
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exec stmt in dict
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verify(dict['a'] == res)
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t = type(a)
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m = getattr(t, meth)
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verify(m == t.__dict__[meth])
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dict['a'] = deepcopy(a)
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m(dict['a'], b)
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verify(dict['a'] == res)
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dict['a'] = deepcopy(a)
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bm = getattr(dict['a'], meth)
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bm(b)
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verify(dict['a'] == res)
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def testset2op(a, b, c, res, stmt="a[b]=c", meth="__setitem__"):
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if verbose: print "checking", stmt
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dict = {'a': deepcopy(a), 'b': b, 'c': c}
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exec stmt in dict
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verify(dict['a'] == res)
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t = type(a)
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m = getattr(t, meth)
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verify(m == t.__dict__[meth])
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dict['a'] = deepcopy(a)
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m(dict['a'], b, c)
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verify(dict['a'] == res)
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dict['a'] = deepcopy(a)
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bm = getattr(dict['a'], meth)
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bm(b, c)
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verify(dict['a'] == res)
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def testset3op(a, b, c, d, res, stmt="a[b:c]=d", meth="__setslice__"):
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if verbose: print "checking", stmt
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dict = {'a': deepcopy(a), 'b': b, 'c': c, 'd': d}
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exec stmt in dict
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verify(dict['a'] == res)
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t = type(a)
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m = getattr(t, meth)
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verify(m == t.__dict__[meth])
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dict['a'] = deepcopy(a)
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m(dict['a'], b, c, d)
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verify(dict['a'] == res)
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dict['a'] = deepcopy(a)
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bm = getattr(dict['a'], meth)
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bm(b, c, d)
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verify(dict['a'] == res)
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def lists():
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if verbose: print "Testing list operations..."
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testbinop([1], [2], [1,2], "a+b", "__add__")
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testbinop([1,2,3], 2, 1, "b in a", "__contains__")
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testbinop([1,2,3], 4, 0, "b in a", "__contains__")
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testbinop([1,2,3], 1, 2, "a[b]", "__getitem__")
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testternop([1,2,3], 0, 2, [1,2], "a[b:c]", "__getslice__")
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testsetop([1], [2], [1,2], "a+=b", "__iadd__")
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testsetop([1,2], 3, [1,2,1,2,1,2], "a*=b", "__imul__")
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testunop([1,2,3], 3, "len(a)", "__len__")
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testbinop([1,2], 3, [1,2,1,2,1,2], "a*b", "__mul__")
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testbinop([1,2], 3, [1,2,1,2,1,2], "b*a", "__rmul__")
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testset2op([1,2], 1, 3, [1,3], "a[b]=c", "__setitem__")
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testset3op([1,2,3,4], 1, 3, [5,6], [1,5,6,4], "a[b:c]=d", "__setslice__")
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def dicts():
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if verbose: print "Testing dict operations..."
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testbinop({1:2}, {2:1}, -1, "cmp(a,b)", "__cmp__")
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testbinop({1:2,3:4}, 1, 1, "b in a", "__contains__")
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testbinop({1:2,3:4}, 2, 0, "b in a", "__contains__")
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testbinop({1:2,3:4}, 1, 2, "a[b]", "__getitem__")
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d = {1:2,3:4}
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l1 = []
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for i in d.keys(): l1.append(i)
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l = []
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for i in iter(d): l.append(i)
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verify(l == l1)
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l = []
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for i in d.__iter__(): l.append(i)
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verify(l == l1)
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l = []
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for i in dictionary.__iter__(d): l.append(i)
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verify(l == l1)
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d = {1:2, 3:4}
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testunop(d, 2, "len(a)", "__len__")
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verify(eval(repr(d), {}) == d)
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verify(eval(d.__repr__(), {}) == d)
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testset2op({1:2,3:4}, 2, 3, {1:2,2:3,3:4}, "a[b]=c", "__setitem__")
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binops = {
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'add': '+',
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'sub': '-',
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'mul': '*',
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'div': '/',
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'mod': '%',
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'divmod': 'divmod',
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'pow': '**',
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'lshift': '<<',
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'rshift': '>>',
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'and': '&',
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'xor': '^',
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'or': '|',
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'cmp': 'cmp',
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'lt': '<',
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'le': '<=',
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'eq': '==',
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'ne': '!=',
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'gt': '>',
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'ge': '>=',
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}
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for name, expr in binops.items():
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if expr.islower():
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expr = expr + "(a, b)"
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else:
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expr = 'a %s b' % expr
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binops[name] = expr
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unops = {
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'pos': '+',
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'neg': '-',
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'abs': 'abs',
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'invert': '~',
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'int': 'int',
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'long': 'long',
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'float': 'float',
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'oct': 'oct',
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'hex': 'hex',
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}
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for name, expr in unops.items():
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if expr.islower():
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expr = expr + "(a)"
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else:
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expr = '%s a' % expr
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unops[name] = expr
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def numops(a, b, skip=[]):
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dict = {'a': a, 'b': b}
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for name, expr in binops.items():
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if name not in skip:
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name = "__%s__" % name
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if hasattr(a, name):
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res = eval(expr, dict)
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testbinop(a, b, res, expr, name)
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for name, expr in unops.items():
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name = "__%s__" % name
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if hasattr(a, name):
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res = eval(expr, dict)
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testunop(a, res, expr, name)
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def ints():
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if verbose: print "Testing int operations..."
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numops(100, 3)
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def longs():
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if verbose: print "Testing long operations..."
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numops(100L, 3L)
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def floats():
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if verbose: print "Testing float operations..."
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numops(100.0, 3.0)
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def complexes():
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if verbose: print "Testing complex operations..."
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numops(100.0j, 3.0j, skip=['lt', 'le', 'gt', 'ge'])
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class Number(complex):
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__slots__ = ['prec']
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def __init__(self, *args, **kwds):
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self.prec = kwds.get('prec', 12)
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def __repr__(self):
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prec = self.prec
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if self.imag == 0.0:
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return "%.*g" % (prec, self.real)
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if self.real == 0.0:
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return "%.*gj" % (prec, self.imag)
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return "(%.*g+%.*gj)" % (prec, self.real, prec, self.imag)
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__str__ = __repr__
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a = Number(3.14, prec=6)
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verify(`a` == "3.14")
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verify(a.prec == 6)
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def spamlists():
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if verbose: print "Testing spamlist operations..."
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import copy, xxsubtype as spam
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def spamlist(l, memo=None):
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import xxsubtype as spam
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return spam.spamlist(l)
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# This is an ugly hack:
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copy._deepcopy_dispatch[spam.spamlist] = spamlist
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testbinop(spamlist([1]), spamlist([2]), spamlist([1,2]), "a+b", "__add__")
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testbinop(spamlist([1,2,3]), 2, 1, "b in a", "__contains__")
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testbinop(spamlist([1,2,3]), 4, 0, "b in a", "__contains__")
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testbinop(spamlist([1,2,3]), 1, 2, "a[b]", "__getitem__")
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testternop(spamlist([1,2,3]), 0, 2, spamlist([1,2]),
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"a[b:c]", "__getslice__")
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testsetop(spamlist([1]), spamlist([2]), spamlist([1,2]),
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"a+=b", "__iadd__")
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testsetop(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "a*=b", "__imul__")
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testunop(spamlist([1,2,3]), 3, "len(a)", "__len__")
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testbinop(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "a*b", "__mul__")
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testbinop(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "b*a", "__rmul__")
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testset2op(spamlist([1,2]), 1, 3, spamlist([1,3]), "a[b]=c", "__setitem__")
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testset3op(spamlist([1,2,3,4]), 1, 3, spamlist([5,6]),
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spamlist([1,5,6,4]), "a[b:c]=d", "__setslice__")
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# Test subclassing
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class C(spam.spamlist):
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def foo(self): return 1
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a = C()
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verify(a == [])
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verify(a.foo() == 1)
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a.append(100)
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verify(a == [100])
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verify(a.getstate() == 0)
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a.setstate(42)
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verify(a.getstate() == 42)
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def spamdicts():
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if verbose: print "Testing spamdict operations..."
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import copy, xxsubtype as spam
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def spamdict(d, memo=None):
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import xxsubtype as spam
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sd = spam.spamdict()
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for k, v in d.items(): sd[k] = v
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return sd
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# This is an ugly hack:
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copy._deepcopy_dispatch[spam.spamdict] = spamdict
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testbinop(spamdict({1:2}), spamdict({2:1}), -1, "cmp(a,b)", "__cmp__")
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testbinop(spamdict({1:2,3:4}), 1, 1, "b in a", "__contains__")
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testbinop(spamdict({1:2,3:4}), 2, 0, "b in a", "__contains__")
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testbinop(spamdict({1:2,3:4}), 1, 2, "a[b]", "__getitem__")
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d = spamdict({1:2,3:4})
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l1 = []
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for i in d.keys(): l1.append(i)
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l = []
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for i in iter(d): l.append(i)
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verify(l == l1)
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l = []
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for i in d.__iter__(): l.append(i)
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verify(l == l1)
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l = []
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for i in type(spamdict({})).__iter__(d): l.append(i)
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verify(l == l1)
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straightd = {1:2, 3:4}
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spamd = spamdict(straightd)
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testunop(spamd, 2, "len(a)", "__len__")
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testunop(spamd, repr(straightd), "repr(a)", "__repr__")
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testset2op(spamdict({1:2,3:4}), 2, 3, spamdict({1:2,2:3,3:4}),
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"a[b]=c", "__setitem__")
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# Test subclassing
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class C(spam.spamdict):
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def foo(self): return 1
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a = C()
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verify(a.items() == [])
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verify(a.foo() == 1)
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a['foo'] = 'bar'
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verify(a.items() == [('foo', 'bar')])
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verify(a.getstate() == 0)
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a.setstate(100)
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verify(a.getstate() == 100)
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def pydicts():
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if verbose: print "Testing Python subclass of dict..."
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verify(issubclass(dictionary, dictionary))
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verify(isinstance({}, dictionary))
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d = dictionary()
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verify(d == {})
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verify(d.__class__ is dictionary)
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verify(isinstance(d, dictionary))
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class C(dictionary):
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state = -1
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def __init__(self, *a, **kw):
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if a:
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assert len(a) == 1
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self.state = a[0]
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if kw:
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for k, v in kw.items(): self[v] = k
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def __getitem__(self, key):
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return self.get(key, 0)
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def __setitem__(self, key, value):
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assert isinstance(key, type(0))
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dictionary.__setitem__(self, key, value)
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def setstate(self, state):
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self.state = state
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def getstate(self):
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return self.state
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verify(issubclass(C, dictionary))
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a1 = C(12)
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verify(a1.state == 12)
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a2 = C(foo=1, bar=2)
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verify(a2[1] == 'foo' and a2[2] == 'bar')
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a = C()
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verify(a.state == -1)
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verify(a.getstate() == -1)
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a.setstate(0)
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verify(a.state == 0)
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verify(a.getstate() == 0)
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a.setstate(10)
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verify(a.state == 10)
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verify(a.getstate() == 10)
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verify(a[42] == 0)
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a[42] = 24
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verify(a[42] == 24)
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if verbose: print "pydict stress test ..."
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N = 50
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for i in range(N):
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a[i] = C()
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for j in range(N):
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a[i][j] = i*j
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for i in range(N):
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for j in range(N):
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verify(a[i][j] == i*j)
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def pylists():
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if verbose: print "Testing Python subclass of list..."
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class C(list):
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def __getitem__(self, i):
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return list.__getitem__(self, i) + 100
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def __getslice__(self, i, j):
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return (i, j)
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a = C()
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a.extend([0,1,2])
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verify(a[0] == 100)
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verify(a[1] == 101)
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verify(a[2] == 102)
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verify(a[100:200] == (100,200))
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def metaclass():
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if verbose: print "Testing __metaclass__..."
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global C
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class C:
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__metaclass__ = type
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def __init__(self):
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self.__state = 0
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def getstate(self):
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return self.__state
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def setstate(self, state):
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self.__state = state
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a = C()
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verify(a.getstate() == 0)
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a.setstate(10)
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verify(a.getstate() == 10)
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class D:
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class __metaclass__(type):
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def myself(cls): return cls
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verify(D.myself() == D)
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import sys
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MT = type(sys)
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|
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def pymods():
|
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if verbose: print "Testing Python subclass of module..."
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global log
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log = []
|
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class MM(MT):
|
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def __init__(self):
|
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MT.__init__(self)
|
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def __getattr__(self, name):
|
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log.append(("getattr", name))
|
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return MT.__getattr__(self, name)
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def __setattr__(self, name, value):
|
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log.append(("setattr", name, value))
|
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MT.__setattr__(self, name, value)
|
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def __delattr__(self, name):
|
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log.append(("delattr", name))
|
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MT.__delattr__(self, name)
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a = MM()
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a.foo = 12
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x = a.foo
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del a.foo
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verify(log == [('getattr', '__init__'),
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('getattr', '__setattr__'),
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("setattr", "foo", 12),
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("getattr", "foo"),
|
||||
('getattr', '__delattr__'),
|
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("delattr", "foo")], log)
|
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|
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def multi():
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||||
if verbose: print "Testing multiple inheritance..."
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||||
global C
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class C(object):
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||||
def __init__(self):
|
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self.__state = 0
|
||||
def getstate(self):
|
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return self.__state
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def setstate(self, state):
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||||
self.__state = state
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a = C()
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verify(a.getstate() == 0)
|
||||
a.setstate(10)
|
||||
verify(a.getstate() == 10)
|
||||
class D(dictionary, C):
|
||||
def __init__(self):
|
||||
type({}).__init__(self)
|
||||
C.__init__(self)
|
||||
d = D()
|
||||
verify(d.keys() == [])
|
||||
d["hello"] = "world"
|
||||
verify(d.items() == [("hello", "world")])
|
||||
verify(d["hello"] == "world")
|
||||
verify(d.getstate() == 0)
|
||||
d.setstate(10)
|
||||
verify(d.getstate() == 10)
|
||||
verify(D.__mro__ == (D, dictionary, C, object))
|
||||
|
||||
def diamond():
|
||||
if verbose: print "Testing multiple inheritance special cases..."
|
||||
class A(object):
|
||||
def spam(self): return "A"
|
||||
verify(A().spam() == "A")
|
||||
class B(A):
|
||||
def boo(self): return "B"
|
||||
def spam(self): return "B"
|
||||
verify(B().spam() == "B")
|
||||
verify(B().boo() == "B")
|
||||
class C(A):
|
||||
def boo(self): return "C"
|
||||
verify(C().spam() == "A")
|
||||
verify(C().boo() == "C")
|
||||
class D(B, C): pass
|
||||
verify(D().spam() == "B")
|
||||
verify(D().boo() == "B")
|
||||
verify(D.__mro__ == (D, B, C, A, object))
|
||||
class E(C, B): pass
|
||||
verify(E().spam() == "B")
|
||||
verify(E().boo() == "C")
|
||||
verify(E.__mro__ == (E, C, B, A, object))
|
||||
class F(D, E): pass
|
||||
verify(F().spam() == "B")
|
||||
verify(F().boo() == "B")
|
||||
verify(F.__mro__ == (F, D, E, B, C, A, object))
|
||||
class G(E, D): pass
|
||||
verify(G().spam() == "B")
|
||||
verify(G().boo() == "C")
|
||||
verify(G.__mro__ == (G, E, D, C, B, A, object))
|
||||
|
||||
def objects():
|
||||
if verbose: print "Testing object class..."
|
||||
a = object()
|
||||
verify(a.__class__ == object == type(a))
|
||||
b = object()
|
||||
verify(a is not b)
|
||||
verify(not hasattr(a, "foo"))
|
||||
try:
|
||||
a.foo = 12
|
||||
except TypeError:
|
||||
pass
|
||||
else:
|
||||
verify(0, "object() should not allow setting a foo attribute")
|
||||
verify(not hasattr(object(), "__dict__"))
|
||||
|
||||
class Cdict(object):
|
||||
pass
|
||||
x = Cdict()
|
||||
verify(x.__dict__ is None)
|
||||
x.foo = 1
|
||||
verify(x.foo == 1)
|
||||
verify(x.__dict__ == {'foo': 1})
|
||||
|
||||
def slots():
|
||||
if verbose: print "Testing __slots__..."
|
||||
class C0(object):
|
||||
__slots__ = []
|
||||
x = C0()
|
||||
verify(not hasattr(x, "__dict__"))
|
||||
verify(not hasattr(x, "foo"))
|
||||
|
||||
class C1(object):
|
||||
__slots__ = ['a']
|
||||
x = C1()
|
||||
verify(not hasattr(x, "__dict__"))
|
||||
verify(x.a == None)
|
||||
x.a = 1
|
||||
verify(x.a == 1)
|
||||
del x.a
|
||||
verify(x.a == None)
|
||||
|
||||
class C3(object):
|
||||
__slots__ = ['a', 'b', 'c']
|
||||
x = C3()
|
||||
verify(not hasattr(x, "__dict__"))
|
||||
verify(x.a is None)
|
||||
verify(x.b is None)
|
||||
verify(x.c is None)
|
||||
x.a = 1
|
||||
x.b = 2
|
||||
x.c = 3
|
||||
verify(x.a == 1)
|
||||
verify(x.b == 2)
|
||||
verify(x.c == 3)
|
||||
|
||||
def dynamics():
|
||||
if verbose: print "Testing __dynamic__..."
|
||||
verify(object.__dynamic__ == 0)
|
||||
verify(list.__dynamic__ == 0)
|
||||
class S1:
|
||||
__metaclass__ = type
|
||||
verify(S1.__dynamic__ == 0)
|
||||
class S(object):
|
||||
pass
|
||||
verify(C.__dynamic__ == 0)
|
||||
class D(object):
|
||||
__dynamic__ = 1
|
||||
verify(D.__dynamic__ == 1)
|
||||
class E(D, S):
|
||||
pass
|
||||
verify(E.__dynamic__ == 1)
|
||||
class F(S, D):
|
||||
pass
|
||||
verify(F.__dynamic__ == 1)
|
||||
try:
|
||||
S.foo = 1
|
||||
except (AttributeError, TypeError):
|
||||
pass
|
||||
else:
|
||||
verify(0, "assignment to a static class attribute should be illegal")
|
||||
D.foo = 1
|
||||
verify(D.foo == 1)
|
||||
# Test that dynamic attributes are inherited
|
||||
verify(E.foo == 1)
|
||||
verify(F.foo == 1)
|
||||
class SS(D):
|
||||
__dynamic__ = 0
|
||||
verify(SS.__dynamic__ == 0)
|
||||
verify(SS.foo == 1)
|
||||
try:
|
||||
SS.foo = 1
|
||||
except (AttributeError, TypeError):
|
||||
pass
|
||||
else:
|
||||
verify(0, "assignment to SS.foo should be illegal")
|
||||
|
||||
def errors():
|
||||
if verbose: print "Testing errors..."
|
||||
|
||||
try:
|
||||
class C(list, dictionary):
|
||||
pass
|
||||
except TypeError:
|
||||
pass
|
||||
else:
|
||||
verify(0, "inheritance from both list and dict should be illegal")
|
||||
|
||||
try:
|
||||
class C(object, None):
|
||||
pass
|
||||
except TypeError:
|
||||
pass
|
||||
else:
|
||||
verify(0, "inheritance from non-type should be illegal")
|
||||
class Classic:
|
||||
pass
|
||||
|
||||
try:
|
||||
class C(object, Classic):
|
||||
pass
|
||||
except TypeError:
|
||||
pass
|
||||
else:
|
||||
verify(0, "inheritance from object and Classic should be illegal")
|
||||
|
||||
try:
|
||||
class C(int):
|
||||
pass
|
||||
except TypeError:
|
||||
pass
|
||||
else:
|
||||
verify(0, "inheritance from int should be illegal")
|
||||
|
||||
try:
|
||||
class C(object):
|
||||
__slots__ = 1
|
||||
except TypeError:
|
||||
pass
|
||||
else:
|
||||
verify(0, "__slots__ = 1 should be illegal")
|
||||
|
||||
try:
|
||||
class C(object):
|
||||
__slots__ = [1]
|
||||
except TypeError:
|
||||
pass
|
||||
else:
|
||||
verify(0, "__slots__ = [1] should be illegal")
|
||||
|
||||
def classmethods():
|
||||
if verbose: print "Testing class methods..."
|
||||
class C(object):
|
||||
def foo(*a): return a
|
||||
goo = classmethod(foo)
|
||||
c = C()
|
||||
verify(C.goo(1) == (C, 1))
|
||||
verify(c.goo(1) == (C, 1))
|
||||
verify(c.foo(1) == (c, 1))
|
||||
class D(C):
|
||||
pass
|
||||
d = D()
|
||||
verify(D.goo(1) == (D, 1))
|
||||
verify(d.goo(1) == (D, 1))
|
||||
verify(d.foo(1) == (d, 1))
|
||||
verify(D.foo(d, 1) == (d, 1))
|
||||
|
||||
def staticmethods():
|
||||
if verbose: print "Testing static methods..."
|
||||
class C(object):
|
||||
def foo(*a): return a
|
||||
goo = staticmethod(foo)
|
||||
c = C()
|
||||
verify(C.goo(1) == (1,))
|
||||
verify(c.goo(1) == (1,))
|
||||
verify(c.foo(1) == (c, 1,))
|
||||
class D(C):
|
||||
pass
|
||||
d = D()
|
||||
verify(D.goo(1) == (1,))
|
||||
verify(d.goo(1) == (1,))
|
||||
verify(d.foo(1) == (d, 1))
|
||||
verify(D.foo(d, 1) == (d, 1))
|
||||
|
||||
def classic():
|
||||
if verbose: print "Testing classic classes..."
|
||||
class C:
|
||||
def foo(*a): return a
|
||||
goo = classmethod(foo)
|
||||
c = C()
|
||||
verify(C.goo(1) == (C, 1))
|
||||
verify(c.goo(1) == (C, 1))
|
||||
verify(c.foo(1) == (c, 1))
|
||||
class D(C):
|
||||
pass
|
||||
d = D()
|
||||
verify(D.goo(1) == (D, 1))
|
||||
verify(d.goo(1) == (D, 1))
|
||||
verify(d.foo(1) == (d, 1))
|
||||
verify(D.foo(d, 1) == (d, 1))
|
||||
|
||||
def compattr():
|
||||
if verbose: print "Testing computed attributes..."
|
||||
class C(object):
|
||||
class computed_attribute(object):
|
||||
def __init__(self, get, set=None):
|
||||
self.__get = get
|
||||
self.__set = set
|
||||
def __get__(self, obj, type=None):
|
||||
return self.__get(obj)
|
||||
def __set__(self, obj, value):
|
||||
return self.__set(obj, value)
|
||||
def __init__(self):
|
||||
self.__x = 0
|
||||
def __get_x(self):
|
||||
x = self.__x
|
||||
self.__x = x+1
|
||||
return x
|
||||
def __set_x(self, x):
|
||||
self.__x = x
|
||||
x = computed_attribute(__get_x, __set_x)
|
||||
a = C()
|
||||
verify(a.x == 0)
|
||||
verify(a.x == 1)
|
||||
a.x = 10
|
||||
verify(a.x == 10)
|
||||
verify(a.x == 11)
|
||||
|
||||
def newslot():
|
||||
if verbose: print "Testing __new__ slot override..."
|
||||
class C(list):
|
||||
def __new__(cls):
|
||||
self = list.__new__(cls)
|
||||
self.foo = 1
|
||||
return self
|
||||
def __init__(self):
|
||||
self.foo = self.foo + 2
|
||||
a = C()
|
||||
verify(a.foo == 3)
|
||||
verify(a.__class__ is C)
|
||||
class D(C):
|
||||
pass
|
||||
b = D()
|
||||
verify(b.foo == 3)
|
||||
verify(b.__class__ is D)
|
||||
|
||||
class PerverseMetaType(type):
|
||||
def mro(cls):
|
||||
L = type.mro(cls)
|
||||
L.reverse()
|
||||
return L
|
||||
|
||||
def altmro():
|
||||
if verbose: print "Testing mro() and overriding it..."
|
||||
class A(object):
|
||||
def f(self): return "A"
|
||||
class B(A):
|
||||
pass
|
||||
class C(A):
|
||||
def f(self): return "C"
|
||||
class D(B, C):
|
||||
pass
|
||||
verify(D.mro() == [D, B, C, A, object] == list(D.__mro__))
|
||||
verify(D().f() == "C")
|
||||
class X(A,B,C,D):
|
||||
__metaclass__ = PerverseMetaType
|
||||
verify(X.__mro__ == (object, A, C, B, D, X))
|
||||
verify(X().f() == "A")
|
||||
|
||||
def overloading():
|
||||
if verbose: print "testing operator overloading..."
|
||||
|
||||
class B(object):
|
||||
"Intermediate class because object doesn't have a __setattr__"
|
||||
|
||||
class C(B):
|
||||
|
||||
def __getattr__(self, name):
|
||||
if name == "foo":
|
||||
return ("getattr", name)
|
||||
else:
|
||||
return B.__getattr__(self, name)
|
||||
def __setattr__(self, name, value):
|
||||
if name == "foo":
|
||||
self.setattr = (name, value)
|
||||
else:
|
||||
return B.__setattr__(self, name, value)
|
||||
def __delattr__(self, name):
|
||||
if name == "foo":
|
||||
self.delattr = name
|
||||
else:
|
||||
return B.__delattr__(self, name)
|
||||
|
||||
def __getitem__(self, key):
|
||||
return ("getitem", key)
|
||||
def __setitem__(self, key, value):
|
||||
self.setitem = (key, value)
|
||||
def __delitem__(self, key):
|
||||
self.delitem = key
|
||||
|
||||
def __getslice__(self, i, j):
|
||||
return ("getslice", i, j)
|
||||
def __setslice__(self, i, j, value):
|
||||
self.setslice = (i, j, value)
|
||||
def __delslice__(self, i, j):
|
||||
self.delslice = (i, j)
|
||||
|
||||
a = C()
|
||||
verify(a.foo == ("getattr", "foo"))
|
||||
a.foo = 12
|
||||
verify(a.setattr == ("foo", 12))
|
||||
del a.foo
|
||||
verify(a.delattr == "foo")
|
||||
|
||||
verify(a[12] == ("getitem", 12))
|
||||
a[12] = 21
|
||||
verify(a.setitem == (12, 21))
|
||||
del a[12]
|
||||
verify(a.delitem == 12)
|
||||
|
||||
verify(a[0:10] == ("getslice", 0, 10))
|
||||
a[0:10] = "foo"
|
||||
verify(a.setslice == (0, 10, "foo"))
|
||||
del a[0:10]
|
||||
verify(a.delslice == (0, 10))
|
||||
|
||||
def all():
|
||||
lists()
|
||||
dicts()
|
||||
ints()
|
||||
longs()
|
||||
floats()
|
||||
complexes()
|
||||
spamlists()
|
||||
spamdicts()
|
||||
pydicts()
|
||||
pylists()
|
||||
metaclass()
|
||||
pymods()
|
||||
multi()
|
||||
diamond()
|
||||
objects()
|
||||
slots()
|
||||
dynamics()
|
||||
errors()
|
||||
classmethods()
|
||||
staticmethods()
|
||||
classic()
|
||||
compattr()
|
||||
newslot()
|
||||
altmro()
|
||||
overloading()
|
||||
|
||||
all()
|
||||
|
||||
if verbose: print "All OK"
|
||||
|
|
@ -380,10 +380,16 @@ From the Iterators list, about the types of these things.
|
|||
>>> i = g()
|
||||
>>> type(i)
|
||||
<type 'generator'>
|
||||
|
||||
XXX dir(object) *generally* doesn't return useful stuff in descr-branch.
|
||||
>>> dir(i)
|
||||
[]
|
||||
|
||||
Was hoping to see this instead:
|
||||
['gi_frame', 'gi_running', 'next']
|
||||
|
||||
>>> print i.next.__doc__
|
||||
next() -- get the next value, or raise StopIteration
|
||||
x.next() -> the next value, or raise StopIteration
|
||||
>>> iter(i) is i
|
||||
1
|
||||
>>> import types
|
||||
|
|
@ -399,7 +405,7 @@ And more, added later.
|
|||
>>> i.gi_running = 42
|
||||
Traceback (most recent call last):
|
||||
...
|
||||
TypeError: object has read-only attributes
|
||||
TypeError: 'generator' object has only read-only attributes (assign to .gi_running)
|
||||
>>> def g():
|
||||
... yield me.gi_running
|
||||
>>> me = g()
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue