Use staticmethod for PasswordStrength methods (#4461)

The methods don't need access to the class, so they don't need to
be classmethods. This change reduces the number of 'bad return'
warnings seen when running Pyright, Pyrefly, and ty.

Author: correctmost

archinstall/lib/models/users.py

@@ -36,67 +36,66 @@ def color(self) -> str:
 			case PasswordStrength.STRONG:
 				return 'green'
 
-	@classmethod
-	def strength(cls, password: str) -> Self:
+	@staticmethod
+	def strength(password: str) -> PasswordStrength:
 		digit = any(character.isdigit() for character in password)
 		upper = any(character.isupper() for character in password)
 		lower = any(character.islower() for character in password)
 		symbol = any(not character.isalnum() for character in password)
-		return cls._check_password_strength(digit, upper, lower, symbol, len(password))
+		return PasswordStrength._check_password_strength(digit, upper, lower, symbol, len(password))
 
-	@classmethod
+	@staticmethod
 	def _check_password_strength(
-		cls,
 		digit: bool,
 		upper: bool,
 		lower: bool,
 		symbol: bool,
 		length: int,
-	) -> Self:
+	) -> PasswordStrength:
 		# suggested evaluation
 		# https://github.com/archlinux/archinstall/issues/1304#issuecomment-1146768163
 		if digit and upper and lower and symbol:
 			match length:
 				case num if 13 <= num:
-					return cls.STRONG
+					return PasswordStrength.STRONG
 				case num if 11 <= num <= 12:
-					return cls.MODERATE
+					return PasswordStrength.MODERATE
 				case num if 7 <= num <= 10:
-					return cls.WEAK
+					return PasswordStrength.WEAK
 				case num if num <= 6:
-					return cls.VERY_WEAK
+					return PasswordStrength.VERY_WEAK
 		elif digit and upper and lower:
 			match length:
 				case num if 14 <= num:
-					return cls.STRONG
+					return PasswordStrength.STRONG
 				case num if 11 <= num <= 13:
-					return cls.MODERATE
+					return PasswordStrength.MODERATE
 				case num if 7 <= num <= 10:
-					return cls.WEAK
+					return PasswordStrength.WEAK
 				case num if num <= 6:
-					return cls.VERY_WEAK
+					return PasswordStrength.VERY_WEAK
 		elif upper and lower:
 			match length:
 				case num if 15 <= num:
-					return cls.STRONG
+					return PasswordStrength.STRONG
 				case num if 12 <= num <= 14:
-					return cls.MODERATE
+					return PasswordStrength.MODERATE
 				case num if 7 <= num <= 11:
-					return cls.WEAK
+					return PasswordStrength.WEAK
 				case num if num <= 6:
-					return cls.VERY_WEAK
+					return PasswordStrength.VERY_WEAK
 		elif lower or upper:
 			match length:
 				case num if 18 <= num:
-					return cls.STRONG
+					return PasswordStrength.STRONG
 				case num if 14 <= num <= 17:
-					return cls.MODERATE
+					return PasswordStrength.MODERATE
 				case num if 9 <= num <= 13:
-					return cls.WEAK
+					return PasswordStrength.WEAK
 				case num if num <= 8:
-					return cls.VERY_WEAK
+					return PasswordStrength.VERY_WEAK
 
-		return cls.VERY_WEAK
+		return PasswordStrength.VERY_WEAK
 
 
 UserSerialization = TypedDict(