Create passwords.md

Author: MichaelCurrin

recipes/python/passwords.md

@@ -0,0 +1,32 @@
+# Passwords
+
+Here `secrets.choice` is used for cryptographically strong random generation.
+
+## One-liner for the shell
+
+```sh
+$ python -c "import secrets, string; print(''.join(secrets.choice(string.ascii_letters + string.digits + string.punctuation) for _ in range(20)))"
+```
+
+## Python script
+
+```python
+#!/usr/bin/env python3
+
+import secrets
+import string
+
+DEFAULT_LENGTH = 20
+CHAR_SET = string.ascii_letters + string.digits + string.punctuation
+
+def create_password(length=DEFAULT_LENGTH, char_set=CHAR_SET):
+  """
+  Generate a secure, random password of a specified length and set of characters.
+  """
+  return ''.join(secrets.choice(char_set) for i in range(length))
+
+
+if __name__ == "__main__":
+  generated_password = create_password()
+  print(generated_password)
+```