python - Regular expression not working on if statement -

i'am using following regex pull several information file.

def inventory():     open('inventory.log', 'r+') f:         match_hostname = re.compile(r'name: "(.+)",')         match_pid = re.compile(r'pid: (.+) ,')         match_sn = re.compile(r'sn: (.+)')         list_text = [text.strip() text in f]         line in list_text:             match_regex_hostname = match_hostname.search(line)             match_regex_pid = match_pid.search(line)             match_regex_sn = match_sn.search(line)             if match_regex_hostname:                 final_hostname = match_regex_hostname.group(1).strip(" ")                 print final_hostname             elif match_regex_pid:                 final_pid = match_regex_pid.group(1).strip(" ")                 print final_pid             elif match_regex_sn:                 final_sn = match_regex_sn.group(1).strip(" ")                 print final_sn inventory() 

below content of "inventory.log" file.

lab-sw01#show inventory name: "lab-sw01", descr: "my switch" pid: as-2001-xt   , vid: n/a, sn: aba0923k0dn 

when call function doesn't show result final_sn. tried re-order if statement , revealed works if , first elif statement. miss on code?

if have both pid , sn on same line, end running first elif statement.

try this:

def inventory(): open('inventory.log', 'r+') f:     match_hostname = re.compile(r'name: "(.+)",')     match_pid = re.compile(r'pid: (.+) ,')     match_sn = re.compile(r'sn: (.+)')     list_text = [text.strip() text in f]     line in list_text:         match_regex_hostname = match_hostname.search(line)         match_regex_pid = match_pid.search(line)         match_regex_sn = match_sn.search(line)         if match_regex_hostname:             final_hostname = match_regex_hostname.group(1).strip(" ")             print final_hostname         if match_regex_pid:             final_pid = match_regex_pid.group(1).strip(" ")             print final_pid         if match_regex_sn:             final_sn = match_regex_sn.group(1).strip(" ")             print final_sn inventory()