I am coding python in emacs. However, somehow the python interpreter running in emacs manages to surprise me. If I write print() print(__name__) print(__name__=='__main__') if __name__ == '__main__': print("indeed") in an emacs buffer, and tell emacs to start an interpreter and run the content of this buffer, I get a buffer containing Python 3.3.5 (default, Mar 18 2014, 02:00:02) [GCC 4.2.1 20070831 patched [FreeBSD]] on freebsd9 Type "help", "copyright", "credits" or "license" for more information. >>> __main__ True >>> (Both __main__ and True are the outputs from the print statement; the python buffer always displays the >>> and prints immediately after it. I am aware of this, this is not a problem.) From the command line, both python and python -i show the 'indeed', as expected. How is Emacs able to the inconsistency of evaluating __name__=='__main__' to True, while not executing things inside if __name__ == '__main__':? And how do reconfigure it so it does not do so any more? Continue reading...
