On 11/17/2010 6:10 PM, Steve Holden wrote:
$ cat data.py
lines = open("data.txt").readlines()
Since you iterate through the file just once, there is no reason I can
think of to make a complete in-memory copy. That would be a problem with
a multi-gigabyte log file ;=). In 3.x at least, open files are line
iterators and one would just need
lines = open("data.txt")
from collections import defaultdict
c = defaultdict(int)
for line in lines:
ls = line.split()
if len(ls)> 3 and ls[3].startswith("NCPU="):
amt = int(ls[3][5:])
c[ls[0]] += amt
for key, value in c.items():
print key, ":", value
$ python data.py
xyz : 4
tanhoi : 1
sabril : 6
regards
Steve
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Terry Jan Reedy
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