pygame - Perform different operations in response to the same event the second time in python

Question

In a loop, the system responds to the pressing of a key on the keyboard, then performs two operations, and then responds to the pressing of the same key on the keyboard again, but only performs the second operation. What should be done?

for event in pygame.event.get():
    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_ESCAPE:
            sys.exit()
        elif event.key == pygame.K_RIGHT:
            tank.update1()
            tank.moving_right = True

For example, in the elif statement, starting from the second time, only tank.moving_right = True will be executed instead of tank.update1()
How to deal with it

Answer 1

Add a switch sign inside the tank

elif event.key == pygame.K_RIGHT:
            tank.update1()
            tank.moving_right = True

        tank.update1()
        tank.moving_right = True
        这里封装一下，然后在tank里加成员变量

Answer 2

Add a flag variable

flag = True
for event in ....:
    ...
    if flag:
        tank.update1()
        flag = False
    tank.moving_right = True