On 2015-08-12 04:05, Ltc Hotspot wrote:
Chris,
Check the code and the visualize execution of the code, available at
http://tinyurl.com/p8tgd5h
message reads: NameError: name 'collections' is not defined
You didn't import the module.
Regards,
Hal
On Tue, Aug 11, 2015 at 5:49 PM, Chris Angelico <ros...@gmail.com
<mailto:ros...@gmail.com>> wrote:
On Wed, Aug 12, 2015 at 10:43 AM, Ltc Hotspot <ltc.hots...@gmail.com
<mailto:ltc.hots...@gmail.com>> wrote:
> Python can pull the hour from the 'From ' line by finding the time and
then
> splitting the string a second time using a colon, i.e., From
>stephen.marqu...@uct.ac.za <mailto:stephen.marqu...@uct.ac.za> Sat
Jan 5 09:14:16 2008
>
> Finally, accumulated the counts for each hour, print out the counts,
sorted
> by hour as shown below:
In that case, you want to sort the entire collection, not a single
key-value pair.
It seems to me you can do this fairly efficiently with
collections.Counter.
import collections
with open(raw_input("Enter file name: ")) as f:
counts = collections.Counter(line.split()[5].rstrip() for line in
f if line.startswith("From "))
counts = counts.items()
counts.sort()
for hour, count in counts:
print hour, count
The most important part is getting items() and then sorting the
whole thing.
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