多次导入同一python模块 [英] Import same python module more than once

问题描述

由于某种特定的按键操作，我试图找到一种不止一次导入同一模块的方法.

I am trying to find a way of importing the same module more than once due to a certain key press....

if event.type == pygame.KEYDOWN:
    if event.key == pygame.K_1:
        import forest_level
    if event.key == pygame.K_2:
        import sea_level
    if event.key == pygame.K_3:
        import desert_level
    if event.key == pygame.K_4:
        import underwater_level
    if event.key == pygame.K_5:
        import space_level

假设我在森林里，然后去了海平面，我将如何回到森林里?

say if I were in the forest level and went to the sea level, how would I get back to forest level?

游戏代码

GAME CODE

推荐答案

您不能.

由于您还没有提供简短，自包含，正确(编译)，示例.

您可能有几个看起来像这样的模块:

You probably have several modules that look like:

# foo_level.py
print "foo"

以及一个主要模块:

# main.py
while True:
    key = raw_input()
    if key == "foo":
        import foo_level
    # and so on.

import 语句旨在将代码引入作用域，而不是实际执行任何代码.

the import statement is designed for bringing code into scope, not for actually executing any code.

将要运行的所有代码多次放入一个函数中:

Put all of the code you want to run multiple times in a function:

# foo_level.py
def do_stuff():
    print "foo"

，而是在开始时一次导入所有模块，然后在循环内调用新函数:

and instead, import all modules once, at the beginning and call the new functions inside the loop:

# main.py
import foo_level
while True:
    key = raw_input()
    if key == "foo":
        foo_level.do_stuff()
    # and so on.

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