Project: password checker

Second project — a program that checks password strength. A good password: at least 8 characters, a digit, an uppercase letter. Our program checks all three rules.

• ●len(pw) >= 8 → length
• ●any(c.isdigit() for c in pw) → has a digit
• ●any(c.isupper() for c in pw) → uppercase
• ●if len(pw)>=8 and has_digit and has_upper: → "strong!"

This is no toy — such checks sit in every signup form! You just wrote the mechanism that protects millions of accounts.