

'''simple docstring'''






import re

from filelock import FileLock


try:
      import nltk

      snake_case_	    =			True
except (ImportError, ModuleNotFoundError):
      snake_case_	    =			False

if NLTK_AVAILABLE:
      with FileLock('.lock') as lock:
            nltk.download('punkt', quiet=True)


def    __lowerCamelCase     ( SCREAMING_SNAKE_CASE_	:      List[Any]       )				->  str:
      """simple docstring"""

      re.sub("<n>"    ,    ""    ,    __SCREAMING_SNAKE_CASE       )  # remove pegasus newline char
      assert NLTK_AVAILABLE, "nltk must be installed to separate newlines between sentences. (pip install nltk)"
      return "\n".join(nltk.sent_tokenize(__SCREAMING_SNAKE_CASE       )       )







'''simple docstring'''






from math import pi






def 		UpperCamelCase__      (		__SCREAMING_SNAKE_CASE				,      __SCREAMING_SNAKE_CASE		)    ->   float:
      return 2 * pi * radius * (angle / 360)


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