Back to Freecodecamp

Step 44

curriculum/challenges/english/blocks/learn-regular-expressions-by-building-a-password-generator/6564d97a5ef99783216a6229.md

latest1.6 KB
Original Source

--description--

Python provides a particular type of string called raw string. Raw strings are prefixed with a r. The key distinction from regular strings lies in how they handle the backslash character: in raw strings, backslashes are treated as literal characters rather than escape characters. When writing regular expressions, using raw strings is a good practice, since they can usually contain a lot of \ characters.

Turn your pattern string into a raw string by prefixing it with a r.

--hints--

You should modify your pattern variable into r'\.'.

js
({ test: () => assert.match(code, /^pattern\s*=\s*r("|')\\\.\1/m) })

--seed--

--seed-contents--

py
import re
import secrets
import string


def generate_password(length, nums, special_chars, uppercase, lowercase):
    # Define the possible characters for the password
    letters = string.ascii_letters
    digits = string.digits
    symbols = string.punctuation

    # Combine all characters
    all_characters = letters + digits + symbols

    while True:
        password = ''
        # Generate password
        for _ in range(length):
            password += secrets.choice(all_characters)
        
        constraints = [
            (nums, '[0-9]'),
            (lowercase, '[a-z]'),
            (uppercase, '[A-Z]'),
            (special_chars, '')
        ]        

    return password
    
# new_password = generate_password(8)
# print(new_password)
--fcc-editable-region--
pattern = '\.'
quote = 'Not all those who wander are lost.'
print(re.findall(pattern, quote))
--fcc-editable-region--