Every attempt to make Python 3.6.0 or 3.6.1rc1 to run on Windows 10 has resulted in the error message shown below. I was running Python 3.5.2 successfully and wanted to upgrade.
C:\Python36-32>python Fatal Python error: Py_Initialize: unable to load the file system codec ModuleNotFoundError: No module named 'encodings' Current thread 0x00001774 (most recent call first): C:\Python36-32> -- https://mail.python.org/mailman/listinfo/python-list