Created by: v-jizhang
The function attributes named func_X have been renamed to use the X form in Python3, https://docs.python.org/3/whatsnew/3.0.html#operators-and-special-methods and also built-in changes https://wiki.python.org/moin/Python3.0#Built-In_Changes. The old names can't be used in Python3. This PR changes the old names to new names to make buck Python3 compatible. Python2 was EOL on 1/1/2020, https://github.com/Homebrew/homebrew-core/issues/49796.