Python Case Sensitive Help....

[samanthavernon]

Hi All,
I'm using Windows Vista with Python 2.5. I need the code to check for case sensitive letters and digits, but something isn't right with it.

The code is below:

# -*- coding: cp1252 -*-
from easygui import *
 
accounttype=buttonbox("Would you like to create an account or login?", "Password Storage System Pro", choices=["Login","New Account"])
 
if accounttype=="Login":
    multpasswordbox("Enter Your Account Information", "Login", ["User ID","Password"])
    msgbox("Thank you for using Password Storage System Pro, \nPlease Try Again Later.")
if accounttype=="New Account":
    newaccount=multpasswordbox("Enter Your Account Information", "New Account", ["User ID","Password"])
    confirm=passwordbox("Please Validate Your Password", "Password")
    while newaccount[1]==confirm:
        msgbox("Thank you for using Password Storage lolSystem Pro")
        password=confirm[1]
        i=0
        cap=0
        low=0
        dig=0
        while i<len(password):
            if password[i] >= "A" and password[i] <= "Z":
                cap=cap+1
            if password[i] >= "a" and password[i] <= "z":
                low=low+1
            if password[i] >= "0" and password[i] <= "9":
                dig=dig+1
            i=i-1
            if cap>0 and low>0 and dig>0:
                    print "Thank You for registering"
 
print cap
print low
print dig
 
if newaccount[1]!=confirm:
    msgbox("Your Passwords did not match. Try again please.")
    confirm=passwordbox("Please Validate Your Password", "Password")
password=confirm[1]
i=0
cap=0
low=0
dig=0
while i<len(password):
    if password[i] >= "A" and password[i] <= "Z":
        cap=cap+1
    if password[i] >= "a" and password[i] <= "z":
        low=low+1
    if password[i] >= "0" and password[i] <= "9":
        dig=dig+1
i=i-1
 
 
print cap
print low
print dig

[bvdet]

Following are a some different approaches that may help you.

import re
 
pattU = re.compile(r'[A-Z]')
pattL = re.compile(r'[a-z]')
pattD = re.compile(r'[0-9]')
 
word = 'AdjiV560dfRGh'
 
print pattU.findall(word)
print pattL.findall(word)
print pattD.findall(word)
 
print len(pattU.findall(word))
 
>>> ['A', 'V', 'R', 'G']
['d', 'j', 'i', 'd', 'f', 'h']
['5', '6', '0']
4

import string
 
word = 'AdjiV560dfRGh'
print len([letter for letter in word if letter in string.ascii_lowercase])
print len([letter for letter in word if letter in string.ascii_uppercase])
print len([letter for letter in word if letter in string.digits])
 
>>> 6
4
3
>>>

Instead of duplicating inline code, you can use a function

# Function returns True if word contains upper case, lower case and digits
# Otherwise returns false
def validate_word(word):
    tt = (len([letter for letter in word if letter in string.ascii_lowercase]), \
          len([letter for letter in word if letter in string.ascii_uppercase]), \
          len([letter for letter in word if letter in string.digits]))
    if 0 in tt: return False
    return True
 
print validate_word('guenhfnm58976')
print validate_word('guenhfASZnm58976')
 
>>> False
True
>>> if validate_word('guenhfASZnm58976'):
...     print 'Success'
... else:
...     print 'Failure'
...     
Success
>>>