"""simple docstring"""






import math

from numpy import inf
from scipy.integrate import quad


def 			UpperCAmelCase__       (				lowerCAmelCase__     :Union[str, Any]		) ->    float:
      '''simple docstring'''


      if num <= 0:
            raise ValueError("""math domain error"""		)

      return quad(__UpperCAmelCase					,		0					,		__UpperCAmelCase					,		args=(__UpperCAmelCase)		)[0]


def 			UpperCAmelCase__       (				lowerCAmelCase__     :Optional[int]					,		lowerCAmelCase__     :Union[str, Any]		) ->    float:
      '''simple docstring'''


      return math.pow(__UpperCAmelCase					,		z - 1		) * math.exp(-x		)


if __name__ == "__main__":
       from doctest import testmod

       testmod()









'''simple docstring'''

import re

from filelock import FileLock


try:
							import nltk

							a  :				Union[str, Any]									=  True
except (ImportError, ModuleNotFoundError):
							a  :				Any									=  False

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


def 		__magic_name__    (	__UpperCAmelCase	)		->					str:

					'''simple docstring'''

					re.sub('''<n>''',      '''''',      __UpperCAmelCase	)  # 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(__UpperCAmelCase	)	)

