input: Write a function to check if a given number is an Armstrong number. An Armstrong number is a number that is the sum of its own digits each raised to the power of the number of digits.
  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(123) == False
  assert is_armstrong_number(370) == True
  assert is_armstrong_number(371) == 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