I define a varible, name 'Decisoin_name' and set -1 at first
and I try to change it in a def of a class
because I’d like to add 1 everytime when I call the def
but the system send me a message
"local variable 'Decision_name' referenced before assignment"
what can I do?
Would you give me a solution to fix it ? thank you
The following is my code
Decision_name = -1
class Decision_Dialog(QDialog):
def sendback(self):
Decision_name+=1
print(Decision_name)
self.close()
You can't change a global name from a class method directly, you need to declare it as a global variable beforehand:
class Decision_Dialog(QDialog):
def sendback(self):
global Decision_name
Decision_name += 1
Although if it does not need to be a global variable, you can take different routes e.g. make it a class variable and let each instance modify to it's need, or make it a instance variable by defining in __init__ and make necessary changes afterwards.
Also, you should be using snake_case for variable names e.g. decision_name.
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