curriculum/challenges/english/blocks/learn-regular-expressions-by-building-a-password-generator/6564dd65c3c2fa873a83d213.md
In a character class, you can combine multiple ranges by writing one range after another inside the square brackets (without any additional characters). For example: [a-d3-6] is the combination of [a-d] and [3-6].
Now, modify the last regex pattern to match any non-alphanumeric character. Combine the a-z, A-Z, and 0-9 ranges into a single character class and add a ^ as the first character to negate the pattern.
You should complete your fourth pattern to match any non-alphanumeric character.
({ test: () => assert.match(code, /constraints\s*=\s*\[\s*\(\s*nums\s*,\s*r("|')\\d\1\s*\)\s*,\s*\(\s*lowercase\s*,\s*r("|')\[a-z\]\2\s*\)\s*,\s*\(\s*uppercase\s*,\s*r("|')\[A-Z\]\3\s*\)\s*,\s*\(\s*special_chars\s*,\s*r("|')\[\^a-zA-Z0-9\]\4\s*\)\s*,?\s*\]/) })
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)
--fcc-editable-region--
constraints = [
(nums, r'\d'),
(lowercase, r'[a-z]'),
(uppercase, r'[A-Z]'),
(special_chars, r'')
]
--fcc-editable-region--
return password
# new_password = generate_password(8)
# print(new_password)
pattern = r'\.'
quote = 'Not all those who wander are lost.'
# print(re.findall(pattern, quote))