ImportError: cannot import name 'MidiEvaluator' from 'parser' (Windows 10)

[spiffspaceman]

Hello,

- Clean Python 3.8.3 installation on Windows 10: uninstalled any previous python versions and installed it using "install now" (without selecting "Add Python 3.8 to path")

- Cloned tbon project (https://github.com/gianmarialari/tbon.git)

- According to project author, tbon needs the following third-party libraries to run: parsimonious, midiutil, pytest. So I did this:

Output:
py -m pip install parsimonious
py -m pip install midiutil
py -m pip install pytest 

Now tbon should work but it doesn't. Here it is the output when I try to execute it:

Error:
C:\Users\Gianmaria\Documents\GitHub\tbon>py tbon.py
Traceback (most recent call last):
  File "tbon.py", line 12, in <module>
    from parser import MidiEvaluator
ImportError: cannot import name 'MidiEvaluator' from 'parser' (unknown location)

Tried also with Python 3.8.1 (always on windows) without success.
The same thing on linux works without any issue.

Just in case you need:

Output:
C:\Users\Gianmaria\Documents\GitHub\tbon>py
Python 3.8.3 (tags/v3.8.3:6f8c832, May 13 2020, 22:37:02) [MSC v.1924 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', 'C:\\Users\\Gianmaria\\AppData\\Local\\Programs\\Python\\Python38\\python38.zip', 'C:\\Users\\Gianmaria\\AppData\\Local\\Programs\\Python\\Python38\\DLLs', 'C:\\Users\\Gianmaria\\AppData\\Local\\Programs\\Python\\Python38\\lib', 'C:\\Users\\Gianmaria\\AppData\\Local\\Programs\\Python\\Python38', 'C:\\Users\\Gianmaria\\AppData\\Local\\Programs\\Python\\Python38\\lib\\site-packages']
>>>

Any suggestion?
P.S. This is my first post here. Tried to follow the python forum rules but if I made any mistake please let me know.

[deanhystad]

What do you see if you type this at the python prompt?

import parser
dir(parser)

Somewhere there should be MidiEvaluator

parser.py imports keysigs and parsimonious.grammer. You should try importing those from the command line

import keysigs
import parsimonious.grammar

Any errors?

[snippsat]

There is a conflict with standard library parser and parser.py named in project.
Rename parser.py to midi_parser.py,in root of project.
Then in tbon.py line-12 change to.

from midi_parser import MidiEvaluator

The Path stuff you show has really nothing to do with the error
You should fix path so also Scripts is in Path,so pip work from anywhere in cmd.

# Okay
C:\\Users\\Gianmaria\\AppData\\Local\\Programs\\Python\\Python38

# Add the place where pip is,only one \ when edit in Windows
C:\\Users\\Gianmaria\\AppData\\Local\\Programs\\Python\\Python38\\Scripts

Look at Python 3.8 (3.6-3.7) and pip installation under Windows

[spiffspaceman]

Thank you Snippsat and Deanhystad for your help!

Snippsat, you were right. I made the change and now I'm able to run the program.

A couple of questions:

- doesn't exist any tool that checks the code and warn about potential name conflicts?

- how did you know that my path didn't contain the Python38\Scripts and Python38\ ?

- To add to the windows path the two missing directory, I decided to do what it is suggested in the manual: <<[...] If you don’t enable this option at install time, you can always re-run the installer, select Modify, and enable it>>. Now the (user) windows path contains the following:

C:\Users\Gianmaria\AppData\Local\Programs\Python\Python38\Scripts\
C:\Users\Gianmaria\AppData\Local\Programs\Python\Python38\
C:\Users\Gianmaria\AppData\Roaming\Python\Scripts

Is the last line correct?

Thanks a lot for you help, Gianmaria

[snippsat]

- how did you know that my path didn't contain the Python38\Scripts and Python38\ ?

You did show sys.path output.

Is the last line correct?

Two first one is correct look at image in link.
The test is that python and pip shall work from any folder path in cmd.

C:\code>python -V
Python 3.8.3

C:\code>pip -V
pip 20.1.1 from c:\python38\lib\site-packages\pip (python 3.8)