How to use 'file handling in python' in Python

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36def _file_is_python(path):
37 # type: (str) -> bool
38 if path.endswith('.py'):
39 return True
40
41 _, extension = os.path.splitext(path)
42 if extension:
43 return False
44 try:
45 with open(path) as might_be_python:
46 line = might_be_python.readline()
47 return line.startswith('#!') and 'python' in line
48 except UnicodeDecodeError:
49 return False
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984def is_python(self, path):
985 """Test whether argument path is a Python script."""
986 head, tail = os.path.splitext(path)
987 return tail.lower() in (".py", ".pyw")

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