[英]How to use the for loop else statement in python 3 when you don't want to break?
這是執行以下代碼的最佳方法,還是在for循環后使用else語句來實現?
moved = False
for action in actions:
if action.type == KEY:
moved = True
if action.key == UP:
move_forward()
update_all()
if not moved:
update_all()
對於那段特定的代碼,您可以簡化為:
for action in actions:
if action.type == KEY and action.key == UP:
move_forward()
update_all()
由於您始終在更新,因此即使您的操作不是KEY類型。
如果有任何理由要全部更新,請在for每個循環后最后進行
moved = False
for action in actions:
if (action.type == KEY and action.key == UP):
moved = True
move_forward()
update_all()
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