对于一个向前的后藤，你可以添加:

while True:
  if some condition:
    break
  #... extra code
  break # force code to exit. Needed at end of while loop
#... continues here

但这只适用于简单的场景(即嵌套这些会让你陷入混乱)

我想要同样的答案，我不想使用goto。所以我使用了下面的例子(来自learnpythonthehardway)

def sample():
    print "This room is full of gold how much do you want?"
    choice = raw_input("> ")
    how_much = int(choice)
    if "0" in choice or "1" in choice:
        check(how_much)
    else:
        print "Enter a number with 0 or 1"
        sample()

def check(n):
    if n < 150:
        print "You are not greedy, you win"
        exit(0)
    else:
        print "You are nuts!"
        exit(0)

早在2007年，PEP 3136就提出了中断和继续的标签，但被拒绝了。提案的动机部分说明了在Python中模仿带标签的break的几种常见方法(虽然不太优雅)。

你可以使用python中的嵌套方法来实现

def func1():
    print("inside func1")
    def inline():
        print("im inside")
    
    inline()
    
func1()

现在有了。转到

我想这可能对你要找的东西有用。

虽然在Python中没有任何等同于goto/label的代码，但您仍然可以使用循环来获得goto/label的这种功能。

让我们以下面所示的代码示例为例，其中goto/label可以在python以外的任意语言中使用。

String str1 = 'BACK'

label1:
    print('Hello, this program contains goto code\n')
    print('Now type BACK if you want the program to go back to the above line of code. Or press the ENTER key if you want the program to continue with further lines of code')
    str1 = input()

if str1 == 'BACK'
    {
        GoTo label1
    }
print('Program will continue\nBla bla bla...\nBla bla bla...\nBla bla bla...')

现在，通过使用下面所示的while循环，可以在python中实现上述代码示例的相同功能。

str1 = 'BACK'

while str1 == 'BACK':
        print('Hello, this is a python program containing python equivalent code for goto code\n')
        print('Now type BACK if you want the program to go back to the above line of code. Or press the ENTER key if you want the program to continue with further lines of code')
        str1 = input()
print('Program will continue\nBla bla bla...\nBla bla bla...\nBla bla bla...')