Gish Gish - 1 year ago 60
Python Question

Putting a variable inside a string (python)

Hi I am quite new to python and this is probably quite a basic question but the help would be much appreciated.

I would like to put an int within a string. This is what I am doing at the moment..

end = smooth(data,window_len=40)
plot.savefig('hanning(40).pdf') #problem line

I have to run the program for several different numbers instead of the two 40's. So I'd like to do a loop but inserting the variable like this doesn't work:



Answer Source
plot.savefig('hanning(%d).pdf' % num)

The % operator, when following a string, allows you to insert values into that string via format codes (the %d in this case). For more details, see the Python documentation:

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