How to fix error in sox module?

Question

Python

I have tried many things and nothing helps.
Here is the error and code:

Traceback

SoX could not be found!

    If you do not have SoX, proceed here:
     - - - http://sox.sourceforge.net/ - - -

    If you do (or think that you should) have SoX, double-check your
    path variables.
    
This install of SoX cannot process .wav files.
This install of SoX cannot process .wav files.
This install of SoX cannot process .wav files.
Input formats were only specified for 0 out of 2 files.The last 2 files will remain unformatted.
This install of SoX cannot process .wav files.
Traceback (most recent call last):
  File "E:\2123123123\123.py", line 9, in <module>
    cbn.build(
  File "C:\Users\Daniil\AppData\Local\Programs\Python\Python39\lib\site-packages\sox\combine.py", line 80, in build
    _validate_file_formats(input_filepath_list, combine_type)
  File "C:\Users\Daniil\AppData\Local\Programs\Python\Python39\lib\site-packages\sox\combine.py", line 312, in _validate_file_formats
    _validate_sample_rates(input_filepath_list, combine_type)
  File "C:\Users\Daniil\AppData\Local\Programs\Python\Python39\lib\site-packages\sox\combine.py", line 321, in _validate_sample_rates
    sample_rates = [
  File "C:\Users\Daniil\AppData\Local\Programs\Python\Python39\lib\site-packages\sox\combine.py", line 322, in <listcomp>
    file_info.sample_rate(f) for f in input_filepath_list
  File "C:\Users\Daniil\AppData\Local\Programs\Python\Python39\lib\site-packages\sox\file_info.py", line 171, in sample_rate
    output = soxi(input_filepath, 'r')
  File "C:\Users\Daniil\AppData\Local\Programs\Python\Python39\lib\site-packages\sox\core.py", line 116, in soxi
    shell_output = subprocess.check_output(
  File "C:\Users\Daniil\AppData\Local\Programs\Python\Python39\lib\subprocess.py", line 420, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "C:\Users\Daniil\AppData\Local\Programs\Python\Python39\lib\subprocess.py", line 501, in run
    with Popen(*popenargs, **kwargs) as process:
  File "C:\Users\Daniil\AppData\Local\Programs\Python\Python39\lib\subprocess.py", line 947, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "C:\Users\Daniil\AppData\Local\Programs\Python\Python39\lib\subprocess.py", line 1416, in _execute_child
    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
FileNotFoundError: [WinError 2] Не удается найти указанный файл

from sox import *
# create combiner
cbn = Combiner()
# pitch shift combined audio up 3 semitones
cbn.pitch(3.0)
# convert output to 8000 Hz stereo
cbn.convert(samplerate=8000, n_channels=2)
# create the output file
cbn.build(
    ['1.wav', '2.wav'], 'output.wav', 'concatenate'
)

Answer 1

Written same - SoX not found! If you haven't installed it - go to sox.sourceforge.net If you have installed it - check your path variables, Twice!)