如何打破无限的 Python 循环？

Question

I'm looking to fix the following code, so that it can finish successfully for all numbers listed. How can I break the infinite loop that's present? Furthermore, how can I return print(is_power_of_two(8)) as True?

  # Check if the number can be divided by two without a remainder
  while n % 2 == 0:
    n = n / 2
  # If after dividing by two the number is 1, it's a power of two
  if n == 1:
    return True
  return False


print(is_power_of_two(0)) # Should be False
print(is_power_of_two(1)) # Should be True
print(is_power_of_two(8)) # Should be True
print(is_power_of_two(9)) # Should be False

Answer 1

将and n != 0添加到 while 条件，因此当 n 为零时循环将停止。

Answer 2

def is_power_of_two(n): # Check if the number can be divided by two without a remainder while n!=0 and (n % 2 == 0 or 2%n==0): n = n / 2 return True return False

Answer 3

import math    
math.log2(number).is_integer()

Use this. From Check if a given number is power of two in Python

Answer 4

your while condition should be :

# Check if the number can be divided by two without a remainder
  while n % 2 == 0 and n >1:
    n = n / 2

cause for the moment your code infinitely loops when n=1 cause 1%2 = 1

Answer 5

def is_power_of_two(n):

 #Check Number for Zero
  if n==0:
    return False
  else:
    # Check if the number can be divided by two without a remainder
    while n % 2 == 0:
      n = n / 2 
    # If after dividing by two the number is 1, it's a power of two
    if n == 1:
      return True
    return False

Answer 6

def is_power_of_two(n):
  # Check if the number can be divided by two without a remainder
  while n % 2 == 0 and n!=0:
    n = n / 2
  # If after dividing by two the number is 1, it's a power of two
  if n == 1:
    return True
  return False
  

print(is_power_of_two(0)) # Should be False
print(is_power_of_two(1)) # Should be True
print(is_power_of_two(8)) # Should be True
print(is_power_of_two(9)) # Should be False

Answer 7

While Loops

make the print_prime_factors function print all the prime factors of a number. A prime factor is a number that is prime and divides another without a remainder.