PyCharm template for python class __init__ function

You can start by making a custom Live Template. I'm not sure about whether you can auto-generate variable number of arguments this way, but, for two constructor arguments the live template may look like:

class $class_name$:
    def __init__(self, $arg1$, $arg2$):
        self.$arg1$ = $arg1$
        self.$arg2$ = $arg2$
$END$

This is how I've set it up in PyCharm:

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Or, you can change the way you set the instance attributes and generalize it for N arguments, see:

• How can you set class attributes from variable arguments (kwargs) in python

I learned of another way to solve this.

• Move cursor to argument
• Press alt + enter
• Select Add field '[arg]' to class for single arg -or-
• Press right arrow key to open sub menu
• Select Fix all 'unused local' problems to add all args