[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

strings/stringfunctions.py

@@ -10,6 +10,7 @@ def is_upper(string):
     """
     return all(ord(char) >= 65 and ord(char) <= 90 for char in string)
 
+
 def is_lower(string):
     """
     Check if all characters in the string are lowercase letters.
@@ -22,6 +23,7 @@ def is_lower(string):
     """
     return all(ord(char) >= 97 and ord(char) <= 122 for char in string)
 
+
 def is_alpha(string):
     """
     Check if all characters in the string are alphabetical (letters).
@@ -34,6 +36,7 @@ def is_alpha(string):
     """
     return all(char.isalpha() for char in string)
 
+
 def is_alnum(string):
     """
     Check if all characters in the string are alphanumeric (letters or digits).
@@ -46,6 +49,7 @@ def is_alnum(string):
     """
     return all(char.isalnum() for char in string)
 
+
 def is_decimal(string):
     """
     Check if all characters in the string are decimal digits.
@@ -58,6 +62,7 @@ def is_decimal(string):
     """
     return all(char.isdigit() for char in string)
 
+
 def is_space(string):
     """
     Check if all characters in the string are whitespace characters.
@@ -70,6 +75,7 @@ def is_space(string):
     """
     return all(char.isspace() for char in string)
 
+
 def is_title(string):
     """
     Check if the string is in title case (first letter of each word is capital).