Secure Password Generator

Generate cryptographically secure random passwords using Python's secrets module. No API keys, no external services, completely offline.

Features

• Cryptographically secure: Uses secrets module (not random)
• Customizable length: Default 16 characters
• Character types: Uppercase, lowercase, digits, special symbols
• Exclude similar characters: Remove 0, O, 1, l, I to avoid confusion
• Batch generation: Generate multiple passwords at once
• Pure standard library: Zero dependencies, works offline

Usage

# Generate a 16-character password (default)
python3 scripts/password_generator.py

# Generate a 20-character password
python3 scripts/password_generator.py 20

# Generate 10 passwords of 24 characters
python3 scripts/password_generator.py 24 10

# Exclude similar characters (0O1lI)
python3 scripts/password_generator.py 16 --exclude-similar

# Password without special symbols
python3 scripts/password_generator.py 16 --no-special

Examples

Generate a strong 20-character password
Generate 5 passwords of 16 characters each
Generate a password without special symbols for a website that doesn't allow them

Options

Security Notes

• Uses secrets.choice() for cryptographically secure randomness
• Suitable for generating passwords, API keys, tokens
• Not suitable for password hashing (use bcrypt/argon2 for storage)

中文说明

安全的随机密码生成器，使用Python标准库secrets模块，无需API Key。

• 默认16位强密码
• 支持自定义长度、字符类型
• 可排除相似字符（0O1lI）
• 支持批量生成