v0.0.6: corrected library for python 3.4

Author: ljnath

PyRandomString/__init__.py

@@ -125,7 +125,7 @@ def get_strings(self, count: int = 10, max_length: int = 10, random_length: bool
             list_of_input_strings = self.__get_input_strings_from_string_type(string_type)
 
             # checking if user have specified any custom symbols, then the default symbols will be overridden
-            list_of_input_strings = [f'{0}{1}'.format(_temp_string, symbols) if '@' in _temp_string else _temp_string for _temp_string in list_of_input_strings]
+            list_of_input_strings = ['{}{}'.format(_temp_string, symbols) if '@' in _temp_string else _temp_string for _temp_string in list_of_input_strings]
 
             input_characters = list_of_input_strings if must_include_all_type else ''.join(list_of_input_strings)
             list_of_strings = self.__get_strings(count, max_length, random_length, input_characters)
@@ -184,7 +184,7 @@ def __validate_input(self, count: int, max_length: int, random_length: bool, str
         if symbols and not isinstance(symbols, str):
             raise UnsupportedTypeException('symbols', f'symbols should be either None or of string type instead of current {type(symbols)} type')
 
-        if symbols and not re.match(f'[{StringType.SYMBOLS.value}]', symbols):
+        if symbols and not re.match('[{}]'.format({StringType.SYMBOLS.value}), symbols):
             raise InvalidInputSymbolsException(symbols)
 
     def __get_input_strings_from_string_type(self, string_type: StringType) -> list: