python how to change the global variables

2018-06-07 20:14:27

This question already has an answer here:

Using global variables in a function other than the one that created them 18 answers

You could try this:

def confirm_upload():
    global upload_confirm
    upload_confirm = True

Since you are doing upload_confirm = True in a local scope, Python treat it like a local variable. Hence, your global variable stays the same.

您需要将global语句放在要访问全局变量的范围内，即：

upload_confirm = False

def confirm_upload():
    global upload_confirm
    upload_confirm = True

Try this inside your confirm_upload() method.

def confirm_upload():
    global upload_confirm #Add this line
    upload_confirm = True

You need to declare it as global inside methods else it will be by default local.

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