>>> python -c \"import sys; print sys.version\" 2.7.6 (default, Nov 10 2013, 19:24:18) [MSC v.1500 32 bit (Intel)] >&
You may try using pip3. Or if pip3 is not installed or not found, try: python3 -m pip install py2exe.
python3 -m pip install py2exe
Source: https://superuser.com/a/942338/315157