Python error How to solve Python ' takes exactly 1 argument (2 given) ' Python error

Python beginner, define urlconfig receive parameters, normal pass parameters, appear, give a parameter error problem,

After defining the function of class, it appears "' takes exactly 1 argument (2 given) ' Python error" at the time of the call.

After querying interesting ' takes exactly 1 argument (2 given) ' Python error, the original in Python, when using instance to invoke its class method, is quite the same as adding itself as the first argument in the call. As follows:

A.method (k)

is quite the same as:

A.method (A, k)

So, when you define a function, you need to first define self in the internal parameters of the function, such as:

Class Person ():

Def method (self, k):

...

If you want to call as a static function, you can identify it by adding "@staticmethod" above the definition function.