How to identify the integers in a string in Python?

Question

Example:

pw = input("enter your password:")

Input:

"bikash413SSS"

How can I know when there is integer, capital letter, etc?

You should include some code fragment. In a word however - regex. — Alexander Ejbekov, Mar 13 '18 at 12:34
Possible duplicate of [check if a string contains a number](https://stackoverflow.com/questions/19859282/check-if-a-string-contains-a-number) — Andrii Muzalevskyi, Mar 13 '18 at 14:08

score 0 · Answer 1 · answered Mar 13 '18 at 13:12

0

I will only suggest some of the approaches that might help you as you try to solve your problem.

Regex
Play with python string methods.

answered Mar 13 '18 at 13:12

Gideon Kimutai

156
7

score 0 · Accepted Answer · edited Mar 14 '18 at 02:21

One simple way to do this is to just run through the input string.

numbers = []
capitals = []
for char in pw:
    if char.isdigit():
        numbers.append(int(char))
    elif char.isupper():
        capitals.append(char)
print(numbers)
print(capitals)

By doing this, you ensure to run through the whole string. You can also use more arrays if you are looking for things other than numbers and capitals, such as special characters (e.g. #) or lowercase letters.

How to identify the integers in a string in Python?

2 Answers2