you have defined a times function in your code. however, it does not accept arguments. you need to alter your times function (and others) so that it (they) take(s) arguments.

Yeah I mean I have not doing anything about times() function it is one of the test cases

I can't get around the need for arguments. In order to pass in the operation functions into the first number, we need to require an argument. But since the second number doesn't take an argument, we can't require one.... So do we have to write two functions for each number?

Notice that over 25K solves have been successull in Python (your language).

Your function declarations to not take any arguments, but where necessary they will need to... to function.

So, rewrite them to accept the correct input(s).

Who can give the solution of this error: TypeError: times() takes 0 positional arguments but 1 was given. Is it kata error or I'm doing something wrong?

I'm agree. It's so annoying))