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#2831: add start argument to enumerate(). Patch by Scott Dial and me.

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This commit is contained in:
Georg Brandl 2008-05-13 19:04:54 +00:00
parent ef9764f1a4
commit 913835763a
3 changed files with 45 additions and 11 deletions
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16
Lib/test/test_enumerate.py
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@ -100,7 +100,8 @@ class EnumerateTestCase(unittest.TestCase):
def test_argumentcheck(self):
self.assertRaises(TypeError, self.enum) # no arguments
self.assertRaises(TypeError, self.enum, 1) # wrong type (not iterable)
self.assertRaises(TypeError, self.enum, 'abc', 2) # too many arguments
self.assertRaises(TypeError, self.enum, 'abc', 'a') # wrong type
self.assertRaises(TypeError, self.enum, 'abc', 2, 3) # too many arguments
def test_tuple_reuse(self):
# Tests an implementation detail where tuple is reused
@ -196,6 +197,19 @@ class TestReversed(unittest.TestCase):
self.assertEqual(rc, sys.getrefcount(r))
class TestStart(EnumerateTestCase):
enum = lambda i: enumerate(i, start=11)
seq, res = 'abc', [(1, 'a'), (2, 'b'), (3, 'c')]
class TestLongStart(EnumerateTestCase):
enum = lambda i: enumerate(i, start=sys.maxint+1)
seq, res = 'abc', [(sys.maxint+1,'a'), (sys.maxint+2,'b'),
(sys.maxint+3,'c')]
def test_main(verbose=None):
testclasses = (EnumerateTestCase, SubclassTestCase, TestEmpty, TestBig,
TestReversed)