Pyinstaller --onefile warning file already exists but should not

Question

When running Pyinstaller --onefile, and starting the resulting .exe, multiple popups show up with the following warning:

WARNING: file already exists but should not: C:\Users\myuser\AppData\Local\Temp\_MEI90082\Cipher\_AES.cp37-win_amd64.pyd

This makes the .exe hard to use even though clicking through the warnings still allows the .exe to run properly.

How to get rid of these warnings ?

Answer 1

Going to put this here in case it helps anyone, since I spent some time finding out how to do this.

in the .spec of your pyinstaller project, add this after the line a = Analysis(...):

# Avoid warning
to_remove = ["_AES", "_ARC4", "_DES", "_DES3", "_SHA256", "_counter"]
for b in a.binaries:
    found = any(
        f'{crypto}.cp37-win_amd64.pyd' in b[1]
        for crypto in to_remove
    )
    if found:
        print(f"Removing {b[1]}")
        a.binaries.remove(b)

Of course you may adapt the array to_remove as well as the exact file name .cp37-win_amd64.pyd to match the files that show up in your warnings.

This results in the files not being included in the .exe and the warnings are gone.

Answer 2

I have almost the same issue.
Not a good idea - remove part of the list that you are iterating.
Try this:

from PyInstaller.building.datastruct import TOC

# ...
# a = Analysis(...)

x = 'cp36-win_amd64'
datas_upd = TOC()

for d in a.datas:
    if x not in d[0] and x not in d[1]:
        datas_upd.append(d)

a.datas = datas_upd