slow code in Python

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  • Edgar458g
    New Member
    • Dec 2025
    • 2

    slow code in Python

    Hi everyone.
    I’m new to Python and ran into a small problem.
    I wrote a script that works fine with small files, but when the file gets bigger, everything becomes very slow. No errors, just takes a long time to finish.
    Is this usually about loops or reading the file line by line?
    What is the first thing I should check to make it faster?

    Thanks in advance.
  • sophiasmith
    New Member
    • Oct 2025
    • 1

    #2
    Hi! Slow Python scripts with big files are usually caused by inefficient loops or reading/processing line by line. First, check how you handle the file and avoid repeated heavy operations. Using efficient data structures and profiling your code with cProfile can help find the bottleneck.

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