On 07/02/14 16:14, rahmad akbar wrote:
he guys, i am trying to understand this code: i understand the first if
statement (if line.startswith..) in read_fasta function but couldnt
understand the next one(if index >=...). thanks in advance!!
I'm not sure what you don't understand about it.
But so far as I can see its effect is to miss out
the first line in the file that starts with '>'
The logic appears to be, in pseudo code:
read the file line buy line
if line starts with >
if not the first time add instance to the collection
add one to index
create an instance.
It has to miss the first one because an instance doesn't
exist yet. It seems odd and I'd probably have done it this
way:
read the file line buy line
if line starts with >
create an instance.
add instance to the collection
But there may be reasons why the author didn't do that.
HTH
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
http://www.flickr.com/photos/alangauldphotos
_______________________________________________
Tutor maillist - Tutor@python.org
To unsubscribe or change subscription options:
https://mail.python.org/mailman/listinfo/tutor
