"[Errno 2] No such file or directory" (.py file)

[snippsat]

You should not have folder %20 in name,
Just make new folder with much shorter path easier to work with,place your Python files there.
From eg cmd.

# Cd down
C:\Users>cd ..

# Make a folder
C:\>mkdir my_code

# cd in
C:\>cd my_code

# Make a file 
C:\my_code>echo.> hello.py

# Look at files in folder
C:\my_code>dir
 Volume in drive C has no label.
 Volume Serial Number is EED7-45CC

 Directory of C:\my_code
  .
10.06.2024  21:49    <DIR>          ..
10.06.2024  21:49                 2 hello.py
               1 File(s)              2 bytes
               2 Dir(s)  17 600 786 432 bytes free

# Run code,i have added print('hello world')
C:\my_code>python hello.py
hello world

C:\my_code>py hello.py
hello world

# Test python and pip version
C:\my_code>python --version
Python 3.12.2

C:\my_code>pip --version
pip 24.0 from C:\Python312\Lib\site-packages\pip (python 3.12)

C:\my_code>