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Replace map(None, *iterables) with zip(*iterables).

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Raymond Hettinger 2008-01-22 23:25:35 +00:00
parent 86def6cb2b
commit 1dfde1ddc0
9 changed files with 20 additions and 90 deletions
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8
Lib/test/test_iter.py
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@ -382,13 +382,10 @@ class TestCase(unittest.TestCase):
# Test map()'s use of iterators.
def test_builtin_map(self):
self.assertEqual(list(map(None, SequenceClass(5))),
[(0,), (1,), (2,), (3,), (4,)])
self.assertEqual(list(map(lambda x: x+1, SequenceClass(5))),
list(range(1, 6)))
d = {"one": 1, "two": 2, "three": 3}
self.assertEqual(list(map(None, d)), [(k,) for k in d])
self.assertEqual(list(map(lambda k, d=d: (k, d[k]), d)),
list(d.items()))
dkeys = list(d.keys())
@ -396,11 +393,6 @@ class TestCase(unittest.TestCase):
i,
i < len(d) and dkeys[i] or None)
for i in range(3)]
self.assertEqual(list(map(None,
d,
SequenceClass(5),
iter(d.keys()))),
expected)
f = open(TESTFN, "w")
try: