[Python] Mocking pathlib.path object for Python unittest

I wanted to mock the class Path from pathlib. Let's assume that I have a function called functionX() where the Path object is being created. This throws an exeception. How I can make this work? My test looks like the following:

@patch('pathlib.Path')
def test_start(self, patch_path):
patch_path.is_file.return_value = True
patch_path.exists.return_value = True
x = functionX()
self.assertTrue(x)


def functionX():
p=Path("/some/non/existing/path/to/a/file.hpp")
if p.exists() and p.is_file():
return True


The output is the following:

AttributeError: type object 'Path' has no attribute '_flavour'


Can anyone help me?

Using pathlib3x instead of pathlib resolves the issue of the exception. But now I have encountered that the functions is_file() and exists() are not executed like mentioned in the return_value.

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