Question

I have this code in python.
Actually i wanted to validate the password field at server side using python. i want password to be alphanumeric in nature and thats what i have done so far

def valid():
    num = "[a-zA-Z0-9]"
    pwd = "asdf67AA"
    match  = re.match(pwd, num)
    if match:
        return True
    else:
        return False

its always returning false . It does not hit the IF condition. whats that i am missing

Answer 1

You have miss placed the argument in method reverse it .

it will work.

But this also matched if you set symbol in your string.
so, i suggest you apply this things :

pwd =”test5456″

pwd.isalnum():

This method will only work for if your string contain string or digit.

if you want strongly want your password contain both numeric and string than this code will help you.

 test = "anil13@@"
 new = tuple(test)
 data = list(new)
 is_symb =False
 is_digit = False
 is_alpha = False

 for d in data :
    if d.isdigit() :
       is_digit = True
    if d.isalpha():
       is_alpha = True
    if not d.isdigit() and not d.isalpha():
       is_symb =True
       break
if is_symb == False and is_digit == True and is_alpha == True:
   print "pwd matchd::::"
else :
   print "pwd dosen't match..."

Note :This code strongly work for numeric & symbol

Regards,
Anil