input: 
  def is_armstrong_number(num: int) -> bool:
      """
      Check if the 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.
      
      >>> is_armstrong_number(153)
      True
      >>> is_armstrong_number(9474)
      True
      >>> is_armstrong_number(120)
      False
      """
      n = len(str(num))
      # initialize sum  
      temp = num  
      sum_of_digits = 0
    
      # find sum of nth power of individual digits  
      while temp > 0:  
          digit = temp % 10  
          sum_of_digits += digit ** n  
          temp //= 10  
    
      # if num is equal to sum_of_digits then the number is an Armstrong number  
      return num == sum_of_digits
  
output:     n = len(str(num))
      # initialize sum  
      temp = num  
      sum_of_digits = 0
    
      # find sum of nth power of individual digits  
      while temp > 0:  
          digit = temp % 10  
          sum_of_digits += digit ** n  
          temp //= 10  
    
      # if num is equal to sum_of_digits then the number is an Armstrong number  
      return num == sum_of_digits