ipython doesn't allow creating of classmethods

September 15, 2023

I tried using ipython to create a class method with the class method decorator.
When I press enter I get the following error:

I tried using the same decorator in a normal python script and it worked. Why can’t I do the same in Ipython?

>Solution :

Upgrade your ipython package to the latest version, e.g.

$ python3 -m pip install -U ipython

It works fine for ipython==8.1.0 (released Feb 25, 2022) or later:

$ ipython
Python 3.11.4 (main, Jun 20 2023, 16:52:35) [Clang 13.0.0 (clang-1300.0.29.30)]
Type 'copyright', 'credits' or 'license' for more information
IPython 8.1.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: class Test:
   ...:     @classmethod
   ...:     def test():
   ...:         pass
   ...:

In [2]:

I could reproduce the issue for the previous version of ipython, 8.0.1:

$ ipython
Python 3.11.4 (main, Jun 20 2023, 16:52:35) [Clang 13.0.0 (clang-1300.0.29.30)]
Type 'copyright', 'credits' or 'license' for more information
IPython 8.0.1 -- An enhanced Interactive Python. Type '?' for help.

In [1]: class Test:
   ...:     @classmethod
  Input In [1]
    @classmethod
                ^
SyntaxError: incomplete input