On 5/9/2009 5:30 PM Alan Gauld said...
You should probably be able to do the first for loop as a list
comprehension, but I can't think of how to get the split() call
embedded into it right now!
Just for fun -- given datafile contents...
1 one 2 two
3 three 4 four
5 five 6 six
7 seven 8 eight
9 nine 10 ten
11 eleven 12 twelve
... here's a single list comprehension answer
[ v for k,v in sorted(
dict ( (int(pair[0]),pair[1])
for pairs in [ dataline.split()
for dataline in open(r'c:\datafile').readlines() if dataline ]
for pair in (pairs[:2], pairs[2:4]) ).items() )]
['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine',
'ten', 'eleven', 'twelve']
Emile
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