Current File : //usr/lib/python3/dist-packages/pyflakes/test/test_builtin.py
"""
Tests for detecting redefinition of builtins.
"""
from sys import version_info
from pyflakes import messages as m
from pyflakes.test.harness import TestCase, skipIf
class TestBuiltins(TestCase):
def test_builtin_unbound_local(self):
self.flakes('''
def foo():
a = range(1, 10)
range = a
return range
foo()
print(range)
''', m.UndefinedLocal)
def test_global_shadowing_builtin(self):
self.flakes('''
def f():
global range
range = None
print(range)
f()
''')
@skipIf(version_info >= (3,), 'not an UnboundLocalError in Python 3')
def test_builtin_in_comprehension(self):
self.flakes('''
def f():
[range for range in range(1, 10)]
f()
''', m.UndefinedLocal)
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