


"""simple docstring"""




def        lowercase							(		lowerCAmelCase__ :     list			) ->      bool:
		if not isinstance(lowerCAmelCase__    ,					lowerCAmelCase__			):
				raise ValueError('''Input series is not valid, valid series - [2, 4, 6]'''			)
		if len(lowerCAmelCase__			) == 0:
				raise ValueError('''Input list must be a non empty list'''			)
		if len(lowerCAmelCase__			) == 1:
				return True
		__a           =			series[1] - series[0]
		for index in range(len(lowerCAmelCase__			) - 1			):
				if series[index + 1] - series[index] != common_diff:
						return False
		return True

def        lowercase							(		lowerCAmelCase__ :     list			) ->      float:
		if not isinstance(lowerCAmelCase__    ,					lowerCAmelCase__			):
				raise ValueError('''Input series is not valid, valid series - [2, 4, 6]'''			)
		if len(lowerCAmelCase__			) == 0:
				raise ValueError('''Input list must be a non empty list'''			)
		__a           =			0
		for val in series:
				answer += val
		return answer / len(lowerCAmelCase__			)


if __name__ == "__main__":
				import doctest

				doctest.testmod()










"""simple docstring"""




def        lowercase							(		lowerCAmelCase__ :     str			) ->      list:
		if n_term == "":
				return []
		__a           =			[]
		for temp in range(int(lowerCAmelCase__			)			):
				series.append(f'''1/{temp + 1}''' if series else '''1'''			)
		return series


if __name__ == "__main__":
				lowercase_			     =  input("Enter the last number (nth term) of the Harmonic Series")
				print("Formula of Harmonic Series => 1+1/2+1/3 ..... 1/n")
				print(harmonic_series(nth_term))






