On 2015-08-12 01:43, Ltc Hotspot wrote:
The Assignment:
I'm trying to write Python code to read through a data file and figure
out the distribution by hour of the dat for each message in the data file.
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:
name = raw_input("Enter file:")
if len(name) < 1 : name = "mbox-short.txt"
handle = open(name)
Desired Output:
04 3
06 1
07 1
09 2
10 3
11 6
14 1
15 2
16 4
17 2
18 1
19 1
Well, line.split()[5] isn't the address, it's the time, e.g. "09:14:16".
You need to do just a little more work to extract the hour.
I don't know what you think you'll achieve by sorting key/value pairs in
reverse order. What you should be doing is sorting the keys (hours),
although sorting the pairs of keys and values (i.e., the items) would
have the same effect. Have a look at the 'sorted' function.
Raw data code, available at http://tinyurl.com/ob89r9p
Embedded data code, available at http://tinyurl.com/qhm4ppq
Visualization URL link, available at http://tinyurl.com/ozzmffy
Regards,
Hal
On Tue, Aug 11, 2015 at 5:26 PM, MRAB <pyt...@mrabarnett.plus.com
<mailto:pyt...@mrabarnett.plus.com>> wrote:
On 2015-08-12 01:01, Ltc Hotspot wrote:
Hi Everyone,
What is the list equivalent to line 12: ncount.sort(reverse=True)
count = dict()
fname = raw_input("Enter file name: ")#
handle = open (fname, 'r')#
for line in handle:
if line.startswith("From "):
address = line.split()[5]
line = line.rstrip()
count[address] = count.get(address, 0) + 1
for key,val in count.items():
ncount = (key,val)
ncount.sort(reverse=True)
print key,val
Error message, reads: AttributeError, line 12, below : 'tuple'
object has no attribute 'sort'
Raw data code, available at http://tinyurl.com/ob89r9p
Embedded data code, available at http://tinyurl.com/qhm4ppq
Visualization URL link, available at http://tinyurl.com/ozzmffy
What are you trying to do? Why are you trying to sort a key/value
pair in reverse order?
--
https://mail.python.org/mailman/listinfo/python-list
--
https://mail.python.org/mailman/listinfo/python-list
