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How do I prevent the TypeError: unsupported operand type(s) for -: 'NoneType' and 'int' when usi...

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The Debug Zone

2 weeks ago

How do I prevent the TypeError: unsupported operand type(s) for -: 'NoneType' and 'int' when usi...

How do I prevent the TypeError: unsupported operand type(s) for -: 'NoneType' and 'int' when usi...

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