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2013/8/1 -If a local does not have a definition before an assignment, the Python interpreter does not know what to do, so it throws this error. The ...
2023/1/24 -The rule is that if you assign to a name in a function, the name is assumed to be local to that function unless you say otherwise with ...
Looks like it is becasue you cannot modify a global variable (on_off) inside a function without declaring it as global. That may be the solution but the cause ...
2023/9/27 -This error is a type of UnboundLocalError , which is raised when a local variable is referenced before it has been assigned in the local scope.
2021/7/7 -Thus python thinks it's a local variable, thus it tries to get it's value before you assign it a value. Either pass the value and get back ...
UnboundLocalError: local variable 'x' referenced before assignment - Python Debugging. @sentdex 717 likes 49K views 13y ago.
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2026/10/1 -UnboundLocalError occurs when Python tries to access a local variable before that variable has been assigned a value.
The unboundlocalerror: local variable referenced before assignment is raised when you try to use a variable before it has been assigned in the local context.
2018/7/29 -だから、local variable 'x' referenced before assignment「代入前（定義される前）にローカル変数'x'が参照されている」ということなのです。 なんか、 ...
2022/8/23 -An UnboundLocalError is raised when a local variable is referenced before it has been assigned. In most cases this will occur when trying to ...