问题
It is very easy to save an ipython notebook cell or several cells to a file or to pastebin.
But sometimes I want to dump the output of some operation to file. What's the fast way of doing that?
%save output Out[56]
gives me:
Out[56] is neither a string nor a macro.
And if I do:
%save output str(Out[56])
It works but I lose the pretty-print formatting, and have an automatic .py extension added to the output file name.
回答1:
to keep pretty-print formatting try
%save output repr(_56)
if an object you return provides __str__ and __repr__ methods it might help
extention .py or .ipy is hardcoded in the IPython magics core. So it is easier to rename each time. or if you are not planning to update IPython, change in ...\IPython\core\magics\code.py , line 188:
if not fname.endswith((u'.py',u'.ipy')):
pass #fname += ext
来源：https://stackoverflow.com/questions/17686684/ipython-quickly-dump-the-output-of-a-cell-to-file