Building with pandas stops executable without any response

[timptner]

Description of the issue

When building an executable the build process completes successfully but when running the generated .exe-file no error appears and the script stops.

I'm not sure if this should be reported to pandas but since this code runs fine as normal python process I think it's a bug of pyinstaller.

Context information (for bug reports)

• Output of pyinstaller --version: 4.2
• Version of Pandas: 1.1.5
• Version of Python: 3.6
• Platform: Windows (german language), conda,
• Did you also try this on another platform? Does it work there?

Did not test on different plattform.

• try the latest development version, using the following command:

pip install https://github.com/pyinstaller/pyinstaller/archive/develop.zip

• follow all the instructions in our "If Things Go Wrong" Guide
  (https://github.com/pyinstaller/pyinstaller/wiki/If-Things-Go-Wrong) and

Make sure everything is packaged correctly

• start with clean installation
• use the latest development version
• Run your frozen program from a command window (shell) — instead of double-clicking on it
• Package your program in --onedir mode
• Package without UPX, say: use the option --noupx or set upx=False in your .spec-file
• Repackage you application in verbose/debug mode. For this, pass the option --debug to pyi-makespec or pyinstaller or use EXE(..., debug=1, ...) in your .spec file.

A minimal example program which shows the error

import pandas as pd

def main():
    print(pd.__version__)

if __name__ == '__main__':
    main()

Stacktrace / full error message

No error message / stracktrace

[bwoodsend]

Try with the development version of PyInstaller. That looks like the Conda/NumPy issue that was fixed in #5168.

conda uninstall pyinstaller
pip install https://github.com/pyinstaller/pyinstaller/archive/develop.zip
pyinstaller --clean your-code.py

[timptner]

Tested pyinstaller (4.2) with pandas (1.2.2) and python version 3.9.1 under mac+venv/pip:

Traceback (most recent call last):
    File "test.py", line 1, in <module>
        import pandas as pd
    File "PyInstaller/loader/pyimod03_importers.py", line 531, in exec_module
    File "pandas/__init__.py", line 179, in <module>
    File "PyInstaller/loader/pyimod03_importers.py", line 531, in exec_module
    File "pandas/testing.py", line 5, in <module>
    File "PyInstaller/loader/pyimod03_importers.py", line 531, in exec_module
    File "pandas/_testing.py", line 29, in <module>
    File "pandas/_libs/testing.pyx", line 1, in init pandas._libs.testing
ModuleNotFoundError: No module named 'cmath'
[18120] Failed to execute script test

Same error when building with pyinstaller 5.0.dev0. Gets fixed by adding --hidden-import=cmath.

I'll try using pyinstaller version 5.0.dev0 under windows+conda in the next days. Also try adding cmath as hidden import if the development version is not helping.

[timptner]

@bwoodsend Using PyInstaller 5.0.dev0 fixed it! Thx