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    <p>My comment on <a href="https://stackoverflow.com/questions/501626/both-python-2-and-3-in-emacs/502422#502422">this answer</a>. </p> <p>I wrote /t/min.py which will run fine in python3 but not in python2 (dictionary comprehension works in python3)</p> <p>Contents of /t/min.py</p> <pre><code>#!/usr/bin/python3 # -*- py-python-command: "/usr/bin/python3"; -*- a = {i:i**2 for i in range(10)} print(a) </code></pre> <p>Note that the shebang indicates python3 and the file local variable py-python-command too.</p> <p>I also wrote /t/min-py.el which makes sure that python-mode.el (ver 5.1.0)is used instead of python.el.</p> <p>Contents of /t/min-py.el</p> <pre><code>(add-to-list 'load-path "~/m/em/lisp/") (autoload 'python-mode "python-mode" "Python Mode." t) ;; (setq py-python-command "python3") </code></pre> <p>Note that the last line is commented out.</p> <p>I start emacs with the following command:</p> <pre><code>emacs -Q -l /t/min-py.el /t/min.py &amp; </code></pre> <p>Now emacs is started with my alternate dotemacs /t/min-py.el and it opens /t/min.py.</p> <p>When I press C-c C-c to send the buffer to python, it says the "for" part is wrong and that indicates that python2 is being used instead of python3. When I press C-c ! to start the python interpreter, it says python 2.5 is started.</p> <p>I can even change the second line of /t/min.py to this:</p> <pre><code># -*- py-python-command: "chunkybacon"; -*- </code></pre> <p>and do this experiment again and emacs still uses python2.</p> <p>If the last line of /t/min-py.el is not commented out, then C-c C-c and C-c ! both use python3.</p>
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    1. POBoth Python 2 and 3 in Emacs
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    1. COIt seems that your local variables are not evaluated. Do you see the message asking for confirmation before evaluation? otherwise what is the value of `enable-local-variables`, if it is not `t` your local variables are ignored!
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