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Visual Studio Code – Why doesn't my Python interpreter show type of data?

screenshot of the error
When I move my mouse pointer on the variable sum, why doesn’t the Python interpreter show me the data type in VS Code?
And also I don’t know this problem is for VS Code or Python interpreter.

I uninstalled python extension and pylint and installed them again.

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2

Answers


  1. 0

    It does show the data-type, look at the last line, the datatype here is Literal[35].

    You were probably expecting something like int, so why doesn’t it show int? Your function-definition looks like this: def sum_number(num1, num2):. There is no explicit type-annotation, so the type-checker may infer it as Any. But in this case the type-checker is smart enough to understand that your specific invocation of the function will return the integer-value 35. It does not generalize that to int since it uses the most specific type it can find.

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  2. 0

    Without explicit annotations, pylance does not actively display the data type, for example, Defining a variable does not show int.

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    But it will determine and display the data type when it is called.

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    For your code, change it so that it displays the data type in either of the following forms

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