IPython | Unix commands not working in script but working in command line interpreter

Question

Below lines when i put them in test.py and runs it, gives me error but runs fine when i run them from command line.

pyvar = 'Hello world'
!echo "A python variable: {pyvar}"

jitu@jitu-PC:~/ipython/python$ ipython test.py 
 File "/home/jitu/ipython/python/test.py", line 2
 !echo "A python variable: {pyvar}"
 ^
 SyntaxError: invalid syntax

Any idea why it is not working ?

@Matt maybe your comment could be an answer, with more explanation? — Eric Wilson
– Eric Wilson, Commented Feb 18, 2014 at 15:45

Just M · Accepted Answer · 2014-02-18 20:54:34Z

3

.py file are python script, they are supposed to be pure python, IPython will not try to do some "magic" on it. You should rename your script to .ipy if you want to use the syntactic sugar IPython offers on top of pure python syntax.

Note that all IPython syntactic sugar can be transformed into pure python (cf %hist vs %hist -t) that will be valid python syntax, but still need to have access to an IPython instance.

answered Feb 18, 2014 at 20:54

Just M

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