在Python中使用Euler＃2项目，没有运行任何东西

Question

def fibo(n):
  if n == 0 or n == 1:
    return n
  else:
    return fibo(n - 1) + fibo(n - 2)


def main():
  total = 0
  a = 0
  while a < 4000000:
    if a % 2 == 0:
      total += a
      fibo(total)
  print(total)

我的代码没有运行任何东西。我正在玩Python（所以没什么大不了但只需要帮助）

Answer 1

def fibo(n):
  if n == 0 or n == 1:
    return n
  else:
    return fibo(n - 1) + fibo(n - 2)

if __name__ == '__main__':
  total = 0
  a = 0
  while a < 4000000:
    if a % 2 == 0:
      total += a
      fibo(total)
  print(total)

尝试使用此功能。 或者只是

def fibo(n):
      if n == 0 or n == 1:
        return n
      else:
        return fibo(n - 1) + fibo(n - 2)

total = 0
a = 0
while a < 4000000:        
if a % 2 == 0:          
total += a
fibo(total)      
print(total)