





import re






def lowerCamelCase__    (							snake_case_	:  str       )      ->				list:
   return [char.split() for char in re.split(R'''[^ a-z A-Z 0-9 \s]'''       ,      str_       )]






def lowerCamelCase__    (							snake_case_	:  str       )      ->				str:
   __snake_case							       =   split_input(str_       )
   return "".join(
       [''''''.join([char.capitalize() for char in sub_str]       ) for sub_str in string_split]       )






def lowerCamelCase__    (							snake_case_	:  str       ,      snake_case_	:  bool       ,      snake_case_	:  str       )      ->				str:
   try:
      __snake_case							       =   split_input(snake_case_       )
      if upper:
         __snake_case							       =   ''''''.join(
             [
                 separator.join([char.upper() for char in sub_str]       )
                 for sub_str in string_split
             ]       )
      else:
         __snake_case							       =   ''''''.join(
             [
                 separator.join([char.lower() for char in sub_str]       )
                 for sub_str in string_split
             ]       )
      return res_str
   except IndexError:
      return "not valid string"






def lowerCamelCase__    (							snake_case_	:  str       )      ->				str:
   return to_simple_case(snake_case_       )






def lowerCamelCase__    (							snake_case_	:  str       )      ->				str:
   try:
      __snake_case							       =   to_simple_case(snake_case_       )
      return res_str[0].lower() + res_str[1:]
   except IndexError:
      return "not valid string"






def lowerCamelCase__    (							snake_case_	:  str       ,      snake_case_	:  bool       )      ->				str:
   return to_complex_case(snake_case_       ,      snake_case_       ,      '''_'''       )






def lowerCamelCase__    (							snake_case_	:  str       ,      snake_case_	:  bool       )      ->				str:
   return to_complex_case(snake_case_       ,      snake_case_       ,      '''-'''       )


if __name__ == "__main__":
    __import__('doctest').testmod()








from math import pi






def lowerCamelCase__    (							snake_case_	:  int       ,      snake_case_	:  int       )      ->				float:
   return 2 * pi * radius * (angle / 360)


if __name__ == "__main__":
    print(arc_length(90, 10))

