Python 为真时将值增加 100

Question

 if 150 <= center_x <= 180:
            x = 200
            x += 100
            MESSAGE = str(x)

我是运行这个说法。虽然是真的，但我希望 x 增加 100，从而输出：300、400、500、600 700 等

出于某种原因，我的输出是 300、300、300、300 等。

我该如何解决这个问题？（提前致谢）:)

Answer 1

尝试将其更改为：

x = 200
if 150 <= center_x <= 180:
    x += 100
    MESSAGE = str(x)

Answer 2

我想这段代码在 while True 循环中。如果是这样，那么问题是您在每次迭代时将 x 设置为 200，然后将其递增 100，每次迭代给出 300。您应该将起始值提供给循环外的 x。

Answer 3

#First you need to define your center_x. You may get this value from some other
#function in your script. I will use 160 as a valid example
center_x  = 160

#You need to define initial value of x outside of the loop so it does not "reset"
x = 200
if 150 <= center_x <= 180:
    while x <= 600: #Here you set the limit of where you want to stop adding. I used 600 as example
        x += 100
        print(x) #There is no need to set a MESSAGE variable, you can directly print the x variable

Python 为真时将值增加 100

Python increment value by 100 while true

python

increment