


"""simple docstring"""


def _lowerCamelCase	(		_UpperCamelCase      ):

			'''simple docstring'''




			if not all(x.isalpha() for x in string      ):
						raise ValueError("String must only contain alphabetic characters."      )

			__lowerCAmelCase				    =			sorted(string.lower()      )
			return len(A_      ) == len(set(A_      )      )


if __name__ == "__main__":
	A     :   str			    =			input("Enter a string ").strip()

	A     :   Dict			    =			is_isogram(input_str)
	print(f'''{input_str} is {"an" if isogram else "not an"} isogram.''')








"""simple docstring"""







def      lowercase			(				A_  ,   A_       )->      float:
  '''simple docstring'''







  if mass < 0:
    raise ValueError("The mass of a body cannot be negative"       )
  return 0.5 * mass * abs(A_       ) * abs(A_       )


if __name__ == "__main__":
 import doctest

 doctest.testmod(verbose=True)






