Class in python

Question

I have created a class called Functions which contains many functions I define this function:

def distance(self,seq1,seq2,seq3)

In another file I want to call the function of this class.

I have defined three DNA sequences:

a=Functions()
a.distance(seq1,seq2,seq3)

When I try to call Functions(), I get the following error:

name 'Functions' is not defined

First, make sure the files are in the same directory. Second, in the 2nd file, you have to import the first one. — dursk
– dursk, Commented Jan 19, 2014 at 23:56
@Elisha: I don't know. There are ways you could make it better (including a complete example, post the full traceback instead of just part of the error, etc.), but it doesn't seem downvote-worthy to me. Some people seem to think that questions that are too "elementary" are automatically bad. Personally, I think there are good, decent, and bad questions at every level of knowledge, and yours is a decent elementary question. — abarnert
– abarnert, Commented Jan 20, 2014 at 0:29
@abarnert, first, this is not my question. second, I also feel like sometimes people mixed between elementary questions and bad questions, that what made me comment about it. it is better to say in a comment where can be improved on the question then immediately vote it down. — Elisha
– Elisha, Commented Jan 20, 2014 at 7:01

rodrigo · Accepted Answer · 2014-01-19 23:56:35Z

6

Usually, if the file is named distance.py for example, you just:

import distance
a = distance.Functions()

Or if you feel lazy:

from distance import Functions
a = Functions()

Or if you feel very lazy:

from distance import *
a = Functions()

answered Jan 19, 2014 at 23:56

rodrigo

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