Code Review

Get expert feedback on your code

Code Excellence

Master the art of code review and learn industry best practices. Improve code quality, security, and maintainability.

Optimize Database Query Performance

Refactored user authentication system to improve query performance

pending

Lines Changed

Issues Found

Suggestions

A+

Grade

user_auth.py

- def authenticate_user(username, password):

- query = f"SELECT * FROM users WHERE username='{username}'"

+ def authenticate_user(username: str, password: str) -> Optional[User]:

+ query = "SELECT * FROM users WHERE username = %s"

+ result = db.execute(query, (username,))

if result:

return verify_password(password, result.password_hash)

Security Issue

SQL injection vulnerability detected. Use parameterized queries instead of string formatting.

Suggestion

Consider adding type hints for better code documentation and IDE support.

Good Practice

Excellent use of password hashing for security. Well implemented!