human
Solve the following python programming problem given the following code:
def _extractHashFromSignature(self, signatureBlock = '') : 
    def removeHead(mesg = []) : 
        status = 0 
        mcopy = copy.deepcopy (mesg) 
        for line in mesg : 
            if (re.match ('^-----BEGIN PGP (SIGNED){0,1}MESSAGE-----$', line) != None) : 
                status = 1 
else : 
                if (((status == 1) or (status == 2)) and (re.match ('^[^:]+: .+$', line) != None)) : 
                    status = 2 
else : 
                    if (((status == 1) or (status == 2)) and (line == '')) : 
                        status = 3 
mcopy.pop (0) 
            if (status == 3) : 
                break 
return mcopy 
def removeTail(mesg = []) : 
        msgOnly = '' 
        for line in mesg : 
            if re.match ('^-----BEGIN PGP SIGNATURE-----$', line) : 
                break 
msgOnly += line 
return msgOnly 
if (sys.version_info > (2, 7)) : 
        sig = re.split ('\r
|\r|
', signatureBlock, flags = re.MULTILINE) 
else : 
        sig = re.split ('\r
|\r|
', sig) 
hash = removeTail (removeHead (sig)) 
    return hash 

    
    

    Fix the buggy line: sig = re.split ('\r
|\r|
', sig)
assistant
#Here is Python code to fix the buggy line: sig = re.

sig = re.split ('\r
|\r|
', signatureBlock)