[Tutor] Dynamically assign variable names to tuple objects
Emile van Sebille
emile at fenx.com
Tue Mar 1 21:14:13 CET 2011
On 3/1/2011 11:49 AM Sean Carolan said...
>> My advice would be to go read up on the zip() function and the
>> str.join() function. Then, if you are using python 2.x, go find
>> itertools.izip. It does the same thing as zip but it's more memory
>> efficient. With those two you can do it in about two lines or so (and
>> maybe a few for set up and clarity and such).
> This is what I've got so far:
> import sys
> myfiles = sys.argv[1:]
> for i in zip(open(myfiles), open(myfiles), open(myfiles)):
> print " ".join(i)
> How would you:
> 1. zip an arbitrary number of files in this manner? I hard-coded it
> to do only three.
for i in zip([ open(filename) for filename in myfiles ])
> 2. Strip out trailing spaces and line breaks from the lines in each file?
Convert the file contents before zip'ing -- so add
return [ line.strip() for line in open(filename) ]
Then your loop looks like:
for i in zip([ cleanedup(filename) for filename in myfiles ])
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