this post was submitted on 22 Jul 2025
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Python

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Hi, I recently realised one can use immutable default arguments to avoid a chain of:

def append_to(element, to=None):
    if to is None:
        to = []

at the beginning of each function with default argument for set, list, or dict.

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[โ€“] logging_strict@programming.dev 1 points 2 weeks ago* (last edited 2 weeks ago)

Upvote for the sanity check.

As the OP mentioned, this is a proposed/draft feature that may or may not ever happen.

With these kinda posts, should start a betting pool. To put money down on whether this feature sees the light of day within an agreed upon fixed time frame.