input: Write a function to determine if a given number is an Armstrong number. An Armstrong number is a number that is equal to the sum of its own digits each raised to the power of the number of digits. For example, 153 is an Armstrong number because 1^3 + 5^3 + 3^3 = 153. If the given number is an Armstrong number return True else return False.
  def is_armstrong_number(num):   
      n = len(str(num)) 
      temp = num  
      sum_of_digits = 0
      while temp > 0:  
          digit = temp % 10  
          sum_of_digits += digit ** n  
          temp //= 10  
      if num == sum_of_digits:  
          return True 
      else: 
          return False
          
  assert is_armstrong_number(153)==True
  assert is_armstrong_number(9474)==True
  assert is_armstrong_number(100)==False
  assert is_armstrong_number(0)==True
  assert is_armstrong_number(1)==True
output: def is_armstrong_number(num):   
      n = len(str(num)) 
      temp = num  
      sum_of_digits = 0
      while temp > 0:  
          digit = temp % 10  
          sum_of_digits += digit ** n  
          temp //= 10  
      if num == sum_of_digits:  
          return True 
      else: 
          return False