Can PyInstaller exe file be distributed?

Question

I converted a .py file to .exe using pyinstaller and made a copy of the whole directory on another machine (same version of OS). What happen is that when I run it, it will prompt some errors.

developer1 is the machine that developed the script, user1 is the machine where I distribute the program to.

C:\Users\user1\Downloads\MyApp\dist\app>app.exe
c:\users\developer1\appdata\local\programs\python\python38-32\lib\site-packages\PyInstaller\loader\pyimod03_importers.py:493: MatplotlibDeprecationWarning:
The MATPLOTLIBDATA environment variable was deprecated in Matplotlib 3.1 and will be removed in 3.3.
Traceback (most recent call last):
  File "pandas\__init__.py", line 32, in <module>
  File "c:\users\developer1\appdata\local\programs\python\python38-32\lib\site-packages\PyInstaller\loader\pyimod03_importers.py", line 493, in exec_module
  File "pandas\_libs\__init__.py", line 3, in <module>
  File "c:\users\developer1\appdata\local\programs\python\python38-32\lib\site-packages\PyInstaller\loader\pyimod03_importers.py", line 493, in exec_module
  File "pandas\_libs\tslibs\__init__.py", line 3, in <module>
  File "pandas\_libs\tslibs\c_timestamp.pxd", line 7, in init pandas._libs.tslibs.conversion
  File "pandas\_libs\tslibs\c_timestamp.pyx", line 1, in init pandas._libs.tslibs.c_timestamp
  File "pandas\_libs\tslibs\tzconversion.pyx", line 1, in init pandas._libs.tslibs.tzconversion
  File "pandas\_libs\tslibs\timedeltas.pyx", line 1, in init pandas._libs.tslibs.timedeltas
ModuleNotFoundError: No module named 'pandas._libs.tslibs.offsets'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "app.py", line 6, in <module>
  File "c:\users\developer1\appdata\local\programs\python\python38-32\lib\site-packages\PyInstaller\loader\pyimod03_importers.py", line 493, in exec_module
  File "pandas\__init__.py", line 36, in <module>
ImportError: C extension: No module named 'pandas._libs.tslibs.offsets' not built. If you want to import pandas from the source directory, you may need to run 'python setup.py build_ext --inplace --force' to build the C extensions first.
[10460] Failed to execute script app

I checked the .spec file and found out that the pathex path is actually the developer machine path, I believe this is actually causing all these errors? Is there a fix for this or the .exe is meant to be run on the developer machine only?

Just a side info:

1. I did not use virtual environment when building the application, not sure if this is causing these errors.
2. The user1 machine do not have python installed

In this .spec file

a = Analysis(['app.py'],
             pathex=['C:\\Users\\developer1\\App1'],
             binaries=[],
             datas=[],
             hiddenimports=[],
             hookspath=[],
             runtime_hooks=[],
             excludes=[],
             win_no_prefer_redirects=False,
             win_private_assemblies=False,
             cipher=block_cipher,
             noarchive=False)

Do I need bother about the pathex being the path of developer machine?

Update:

1. Yes pyinstaller exe file can be distributed
2. Most ModuleNotFoundError can be solved by using --hiddenimport as mentioned in the answer accepted.
3. There's no need to bother about the pathex being different from user path

Answer 1

type pyinstaller app.py --hiddenimport=pandas._libs.tslibs.offsets when building the app

since you posted the spec file... you can put this in and just use pyinstaller app.spec

a = Analysis(['app.py'],
         pathex=['C:\\Users\\developer1\\App1'],
         binaries=[],
         datas=[],
         hiddenimports=['pandas._libs.tslibs.offsets'],
         hookspath=[],
         runtime_hooks=[],
         excludes=[],
         win_no_prefer_redirects=False,
         win_private_assemblies=False,
         cipher=block_cipher,
         noarchive=False)