Python while (bool):
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Python while (bool):
提问by Rohit Rayudu
In this case:
在这种情况下：
swag = True
i = 0
while swag:
i=i+1
print(swag)
if i == 3:
swag = False
Will the while loop exit after 3 turns?
while 循环会在 3 圈后退出吗？
Does while swag - check if swag exists or if swag is True
是否在 swag - 检查 swag 是否存在或 swag 是否为 True
采纳答案by Xymostech
while swag:will run while swagis "truthy", which it will be while swagis True, and will not be when you set swagto False.
while swag:将运行 whileswag是“真实的”，这将是 while swagis True，而当您设置swag为时则不会False。
回答by arshajii
Does while swag - check if swag exists or if swag is True
是否在 swag - 检查 swag 是否存在或 swag 是否为 True
It checks if swagis True(or "truthy", I should say). And yes, the loop will exit after 3 iterations because i=i+1must be executed 3 timesuntil i == 3and (by the if-statement) swagis set to False, at which point the loop will exit.
它检查是否swag是True（或“真实”，我应该说）。是的，循环将在 3 次迭代后退出，因为i=i+1必须执行3 次，直到i == 3和（通过 -if语句）swag设置为False，此时循环将退出。
But why not check this yourself?
但为什么不自己检查一下呢？
swag = True
i = 0
while swag:
i=i+1
print(swag)
if i == 3:
swag = False
True True True
回答by Sandwich Heat
You can also shorten your expression to increment variable 'i' by 1 by using the following notation: i+=1 (same as i=i+1)
您还可以使用以下符号缩短表达式以将变量“i”增加 1：i+=1（与 i=i+1 相同）
