ImportError: cannot import name 'SliceType'

Question

I have a Python 2.x program with this line of code:

from types import SliceType

When running the file with python3, the following error is printed:

ImportError: cannot import name 'SliceType'

How can I fix this so both Python 2.x and Python 3.x can execute the file?

This is not a duplicate of any random other ImportError question like this one. It is intended to be found via Google/SO search when you got the same error message. Before writing this question/answer, I wasn't able to find any solution for the issue described here.

Answer 1

You can use a try-based construct to get full 2.x/3.x compatibility:

try:
    from types import SliceType
except ImportError:
    SliceType = slice

See this reference for a table on the Python3 names for objects in the Python2 types module.