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November 2022

20 participants
12 discussions

Add mechanism to check if a path is a junction (for Windows)
by Charles Machalow Nov. 18, 2022

Nov. 18, 2022

Junctions are contextually similar to symlinks on Windows. I propose adding a mechanism to both pathlib.Path and os.path to check if a given path is a junction or not. Currently is_symlink/islink return False for junctions. Maybe isjunction in os.path and is_junction in pathlib.Path? Part of me thinks about adding an junction_ok param to the existing islink and is_symlink since they are often similar in usage. Thoughts?

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Custom unpickler and pickler for the shelve module
by furkanonder Nov. 17, 2022

Nov. 17, 2022

Hi, As you know we can't pickle the lambda functions in the standard pickle module. So, for that reason the shelve library also can't do that. What if we can define the custom pickler and unpickler for the shelve module? We couldn't do this before; import shelve with shelve.open("test_file") as sh: squared = lambda x: x ** 2 sh['test_key'] = squared Now, we can easily do it; (https://gist.github.com/furkanonder/436d1b23eede54650107924e747b5d77) import dill import shelve with shelve.open("test_file_2", pickler=dill.Pickler, unpickler=dill.Unpickler) as sh: squared = lambda x: x ** 2 sh['test_key'] = squared I could easily solve this problem I had while using the Shelve module. I believe that shelve module will be a more useful module by adding support for custom unpickler and pickler. Kindest regards, Furkan Onder

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