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Profiling slow imports in Python (jackevans.bearblog.dev)
submitted 1 month ago by norambna@programming.dev to c/python@programming.dev
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[-] logging_strict@programming.dev 1 points 1 month ago

The sample code for lazy imports looks wrong

STRIPE = None

def _stripe():
    global STRIPE
    if STRIPE is None:
        import stripe

        return stripe
    return STRIPE

STRIPE is never changed. And two return statements in the same function?!

Anyways can imagine how to do lazy imports without relying on the given code sample.

[-] MajinBlayze@lemmy.world 3 points 1 month ago

This is a function definition, not where it's called; any number of things can happen between these statements running. Second, multiple return statements is not unusual when there is control logic, i.e. if statements.

[-] logging_strict@programming.dev 1 points 1 month ago

Multiple return statements is unusual. In very rare situations i understand. But the rule is never do that.

When there is only one return statement, can step into the function to see the local variables

[-] logging_strict@programming.dev 1 points 1 month ago

You are in for a real treat!

Here is how to step in and get the locals

This technique depends on there being only one return statement

https://logging-strict.readthedocs.io/en/stable/code/tech_niques/context_locals.html

this post was submitted on 23 Feb 2025
15 points (100.0% liked)

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