Python 错误：UnboundLocalError: cannot access local variable 'tdopTimeStart' 解決方案

The error message 'UnboundLocalError: cannot access local variable 'tdopTimeStart' where it is not associated with a value' indicates that you are trying to use the variable 'tdopTimeStart' before it has been assigned a value.

To fix this, you need to make sure 'tdopTimeStart' has a value assigned to it before you try to use it. You can do this in two ways:

1. Assign a default value: At the beginning of your code, give 'tdopTimeStart' an initial value. For example:

tdopTimeStart = None

2. Assign a value from a previous statement: Make sure 'tdopTimeStart' gets a value assigned to it in a statement that runs before the line where the error occurs.

Remember that variables in Python have scope. If you try to access a variable outside of its scope, you will get this error. Ensure your code assigns the variable within the correct scope.