subprocess.check_output is not working with path containing "\" and spaces

Question

I am trying to execute a windows executable which could be located in "c:\program files\folder" using python. The get_me_the_path() routine returns the exe path located in "c:\program files\folder". I tried various things like replacing "\" with "\\" and " " with "\ " OR even changing "\" to "/" BUT everytime I get the same error

Issue is that i want to convert output_path variable to some form which subprocess.check_output can execute without issues. Few people suggested normpath but that too doesn't help and I get the same error.

try:
    output_path= os.path.join(get_me_the_path()) ;
    exepath = output_path.replace("\\", "/").replace(" ", "\\ ")
    subprocess.check_output(exepath,shell=True,stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
    raise RuntimeError("command '{}' return with error (code {}): {}".format(e.cmd, e.returncode, e.output))

This is the error I am getting every time

RuntimeError: command 'C:/Program\ Files/folder/mytool.exe' return with error (code 1):
  b"'C:/Program\\' is not recognized as an internal or external command, operable program
    or batch file.