An error for generating an exe file using pyinstaller - typeerror: expected str, bytes or os.PathLike object, not NoneType

Question

I am trying to build an .exe file from .py file using pysinstaller and Python 3.7.2.

It worked with Python 3.6; then I re-installed the last version of Python (3.7.2) and tried to generate an exe file, but pyinstaller barfs.

Below is the error report I get.

(venv) C:\Users\user\Desktop\untitled1>pyinstaller test.py

53 INFO: PyInstaller: 3.4
53 INFO: Python: 3.7.2
54 INFO: Platform: Windows-10-10.0.17134-SP0
58 INFO: wrote C:\Users\user\Desktop\untitled1\test.spec
60 INFO: UPX is not available.
61 INFO: Extending PYTHONPATH with paths
['C:\\Users\\user\\Desktop\\untitled1', 'C:\\Users\\user\\Desktop\\untitled1']
61 INFO: checking Analysis
187 INFO: checking PYZ
236 INFO: checking PKG
237 INFO: Building PKG because PKG-00.toc is non existent
238 INFO: Building PKG (CArchive) PKG-00.pkg

Traceback (most recent call last):
  File "C:\Users\user\Desktop\untitled1\venv\Scripts\pyinstaller-script.py", line 11, in  <module>
    load_entry_point('PyInstaller==3.4', 'console_scripts', 'pyinstaller')()
  File "C:\Users\user\Desktop\untitled1\venv\lib\site-packages\PyInstaller\__main__.py", line 111, in run
    run_build(pyi_config, spec_file, **vars(args))
  File "C:\Users\user\Desktop\untitled1\venv\lib\site-packages\PyInstaller\__main__.py", line 63, in run_build
    PyInstaller.building.build_main.main(pyi_config, spec_file, **kwargs)
  File "C:\Users\user\Desktop\untitled1\venv\lib\site- packages\PyInstaller\building\build_main.py", line 838, in main
    build(specfile, kw.get('distpath'), kw.get('workpath'), kw.get('clean_build'))   
  File "C:\Users\user\Desktop\untitled1\venv\lib\site- packages\PyInstaller\building\build_main.py", line 784, in build
    exec(text, spec_namespace)
  File "<string>", line 29, in <module>   
  File "C:\Users\user\Desktop\untitled1\venv\lib\site-packages\PyInstaller\building\api.py", line 424, in __init__
    strip_binaries=self.strip, upx_binaries=self.upx,   
  File "C:\Users\user\Desktop\untitled1\venv\lib\site-packages\PyInstaller\building\api.py", line 196, in __init__
    self.__postinit__()
  File "C:\Users\user\Desktop\untitled1\venv\lib\site-packages\PyInstaller\building\datastruct.py", line 158, in __postinit__
    self.assemble()   
  File "C:\Users\user\Desktop\untitled1\venv\lib\site-packages\PyInstaller\building\api.py", line 273, in assemble
    pylib_name = os.path.basename(bindepend.get_python_library_path())   
  File "C:\Users\user\AppData\Local\Programs\Python\Python37\lib\ntpath.py", line 214, in basename
    return split(p)[1]
  File "C:\Users\user\AppData\Local\Programs\Python\Python37\lib\ntpath.py", line 183, in split
    p = os.fspath(p) TypeError: expected str, bytes or os.PathLike object, not NoneType

What could be the problem?

Answer 1

In my case the problem occurs when I'm using the standard library's venv, but not when I'm using virtualenv. (However I had to use virtualenv==16.1.0 because of another bug.)

Answer 2

I found the following solution: replace bindepend.py from <myProject_path>\venv\Lib\site-packages\PyInstaller\depend with the file provided by Loran425 on github here

Answer 3

As I have read from many forums here and here and discussions regarding this issue caused by Pyinstaller. If you are using Pycharm or any virtual environment. Unfortunatelly Pycharm creates its local vertual environment in venvpath once you indicate the interpreter. So, you should set the external tool (pyinstaller) to the real path of your python 3.7 .exe as the picture shows here.

For Linux users, follow my other answer here.