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  r61118 | raymond.hettinger | 2008-02-28 23:30:42 +0100 (Thu, 28 Feb 2008) | 1 line

  Have itertools.chain() consume its inputs lazily instead of building a tuple of iterators at the outset.
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  r61119 | raymond.hettinger | 2008-02-28 23:46:41 +0100 (Thu, 28 Feb 2008) | 1 line

  Add alternate constructor for itertools.chain().
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  r61123 | mark.dickinson | 2008-02-29 03:16:37 +0100 (Fri, 29 Feb 2008) | 2 lines

  Add __format__ method to Decimal, to support PEP 3101
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  r61124 | raymond.hettinger | 2008-02-29 03:21:48 +0100 (Fri, 29 Feb 2008) | 1 line

  Handle the repeat keyword argument for itertools.product().
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  r61125 | mark.dickinson | 2008-02-29 04:29:17 +0100 (Fri, 29 Feb 2008) | 2 lines

  Fix docstring typo.
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This commit is contained in:
Christian Heimes 2008-02-29 14:57:44 +00:00
parent 5524089fa1
commit f16baebf16
4 changed files with 447 additions and 58 deletions
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14
Lib/test/test_itertools.py
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@ -54,7 +54,14 @@ class TestBasicOps(unittest.TestCase):
self.assertEqual(list(chain('abc')), list('abc'))
self.assertEqual(list(chain('')), [])
self.assertEqual(take(4, chain('abc', 'def')), list('abcd'))
self.assertRaises(TypeError, chain, 2, 3)
self.assertRaises(TypeError, list,chain(2, 3))
def test_chain_from_iterable(self):
self.assertEqual(list(chain.from_iterable(['abc', 'def'])), list('abcdef'))
self.assertEqual(list(chain.from_iterable(['abc'])), list('abc'))
self.assertEqual(list(chain.from_iterable([''])), [])
self.assertEqual(take(4, chain.from_iterable(['abc', 'def'])), list('abcd'))
self.assertRaises(TypeError, list, chain.from_iterable([2, 3]))
def test_combinations(self):
self.assertRaises(TypeError, combinations, 'abc') # missing r argument
@ -298,6 +305,9 @@ class TestBasicOps(unittest.TestCase):
([range(2), range(3), range(0)], []), # last iterable with zero length
]:
self.assertEqual(list(product(*args)), result)
for r in range(4):
self.assertEqual(list(product(*(args*r))),
list(product(*args, **dict(repeat=r))))
self.assertEqual(len(list(product(*[range(7)]*6))), 7**6)
self.assertRaises(TypeError, product, range(6), None)
argtypes = ['', 'abc', '', range(0), range(4), dict(a=1, b=2, c=3),
@ -684,7 +694,7 @@ class TestVariousIteratorArgs(unittest.TestCase):
for g in (G, I, Ig, S, L, R):
self.assertEqual(list(chain(g(s))), list(g(s)))
self.assertEqual(list(chain(g(s), g(s))), list(g(s))+list(g(s)))
self.assertRaises(TypeError, chain, X(s))
self.assertRaises(TypeError, list, chain(X(s)))
self.assertRaises(TypeError, chain, N(s))
self.assertRaises(ZeroDivisionError, list, chain(E(s)))