Why is Python giving an error when the command prompt is not?

Question

I have recently lost all of my data from a mistake with GitHub. I found a way to retrieve the information one by one. See here: Why did the GitHub windows client delete all of my work? . I now have decided to make a Python program to automatically retrieve the data. I have done the process manually and it works fine. For some reason when I call the command: git cat-file -t code , it returns: fatal: Not a valid object name code . You replace code with the hexadecimal number. For example, 0921d007bc8ca0000a587181263cf4f8d4d38e31 . I do this in a for loop. I use

def runProcess(exe):    
    p = subprocess.Popen(exe, cwd="C:/Users/Ajay/github folder/", stdout=subprocess.PIPE, stderr=subprocess.STDOUT, shell=False)
    while True:
        retcode = p.poll() #returns None while subprocess is running
        line = p.stdout.readline()
        yield line
        if(retcode is not None):
            done = True
            break

to run the command prompt commands. Can someone please explain why this error only happens in Python and if I have done something incorrectly or if I should fix something.

Thanks!

Answer 1

For some reason I used shell=False . If you change that to shell=True it works fine. When it is enabled it emulates the shell and works fine.