How to paste several lines of codes to the Python console

[22_alias]

For editing, I'm using old fashioned text editor with an opened console on a separate windows (and also Jupyter sometimes, but the issue doesn't apply here). I've tried PyCharm but it was extremely slow so I reverted back to simple text editor.

I also import some of the code, including using the reload command from the import library, but still use the copy-paste mechanism a lot.

Add.: The implementation of Python that is installed on the system is the CPython one.