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Asked: 2026-06-09T16:41:30+00:00

I have created a utility software for operating file copy process in python.Every thing

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I have created a utility software for operating file copy process in python.Every thing is working nice but when i start copying any files larger than 2 Gb the the whole system hangs. It seems to me that it might be a memory leak issue.

I have tried:

  • Copying it using Shutil Module
  • Using Lazy operation by copying Chunks of Bytes
  • Copying Files data LINE by LINE
  • Using Fileinput Module
  • Adjusting Buffer million times
  • Writing copy file part with C and then Extending it with python.

…but none of this has worked.

Here are links to my File Script and my GUI Script:

I’m using Windows 7 with 2 Gb of RAM.

Can anyone help please?

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1 Answer

  1. Editorial Team

    Since you only have 2 GB of memory when you copy a file that’s larger than your memory, it causes issues. Don’t load the entire file into memory. Instead, I would do something like:

    with open(myLargeFile) as f:
   with open(myOtherLargeFile, "w") as fo:
   for line in f:            
      fo.write(line)

    Since this can potentially take a long time, you should put this into a separate thread from your GUI or the GUI will appear to hang. Here are a couple links on that topic for wxPython:

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