Hi Alan,
I made a mistake and incorrectly assumed that differences between 54 lines
of output and 27 lines of output is the result of removing duplicate email
addresses, i.e., gsil...@umich.edu
gsil...@umich.edu, c...@iupui.edu, c...@iupui.edu
Apparently, this is not the case and I was wrong :(
The solution to the problem is in the desired line output:
stephen.marqu...@uct.ac.za
lo...@media.berkeley.edu
zq...@umich.edu
rjl...@iupui.edu
zq...@umich.edu
rjl...@iupui.edu
c...@iupui.edu
c...@iupui.edu
gsil...@umich.edu
gsil...@umich.edu
zq...@umich.edu
gsil...@umich.edu
wagne...@iupui.edu
zq...@umich.edu
antra...@caret.cam.ac.uk
gopal.ramasammyc...@gmail.com
david.horw...@uct.ac.za
david.horw...@uct.ac.za
david.horw...@uct.ac.za
david.horw...@uct.ac.za
stephen.marqu...@uct.ac.za
lo...@media.berkeley.edu
lo...@media.berkeley.edu
r...@media.berkeley.edu
c...@iupui.edu
c...@iupui.edu
c...@iupui.edu
There were 27 lines in the file with From as the first word
Not in the output of a subset.
Latest output:
set(['stephen.marqu...@uct.ac.za', 'lo...@media.berkeley.edu', '
zq...@umich.edu', 'rjl...@iupui.edu', 'c...@iupui.edu', 'gsil...@umich.edu',
'wagne...@iupui.edu', 'antra...@caret.cam.ac.uk', '
gopal.ramasammyc...@gmail.com', 'david.horw...@uct.ac.za', '
r...@media.berkeley.edu']) ← Mismatch
There were 54 lines in the file with From as the first word
Latest revised code:
fname = raw_input("Enter file name: ")
if len(fname) < 1 : fname = "mbox-short.txt"
fh = open(fname)
count = 0
addresses = set()
for line in fh:
if line.startswith('From'):
line2 = line.strip()
line3 = line2.split()
line4 = line3[1]
addresses.add(line4)
count = count + 1
print addresses
print "There were", count, "lines in the file with From as the first word"
Regards,
Hal
On Sat, Aug 1, 2015 at 5:44 PM, Alan Gauld <alan.ga...@btinternet.com>
wrote:
> On 02/08/15 00:07, Ltc Hotspot wrote:
>
>> Question1: The output result is an address or line?
>>
>
> Its your assignment,. you tell me.
> But from your previous mails I'm assuming you want addresses?
>
> Question2: Why are there 54 lines as compared to 27 line in the desired
>> output?
>>
>
> Because the set removes duplicates? So presumably there were 27
> duplicates? (Which is a suspicious coincidence!)
>
> fname = raw_input("Enter file name: ")
>> if len(fname) < 1 : fname = "mbox-short.txt"
>> fh = open(fname)
>> count = 0
>> addresses = set()
>> for line in fh:
>> if line.startswith('From'):
>> line2 = line.strip()
>> line3 = line2.split()
>> line4 = line3[1]
>> addresses.add(line4)
>> count = count + 1
>> print addresses
>> print "There were", count, "lines in the file with From as the first word"
>>
>
> That looks right in that it does what I think you want it to do.
>
> The output result:
>> set(['stephen.marqu...@uct.ac.za', 'lo...@media.berkeley.edu', '
>> zq...@umich.edu', 'rjl...@iupui.edu', 'c...@iupui.edu', '
>> gsil...@umich.edu',
>> 'wagne...@iupui.edu', 'antra...@caret.cam.ac.uk','
>> gopal.ramasammyc...@gmail.com', 'david.horw...@uct.ac.za', '
>> r...@media.berkeley.edu']) ← Mismatch
>>
>
> That is the set of unique addresses, correct?
>
> There were 54 lines in the file with From as the first word
>>
>
> And that seems to be the number of lines in the original file
> starting with From. Can you check manually if that is correct?
>
> The desired output result:
>> stephen.marqu...@uct.ac.za
>> lo...@media.berkeley.edu
>> zq...@umich.edu
>> rjl...@iupui.edu
>> zq...@umich.edu
>> rjl...@iupui.edu
>>
> ...
>
> Now I'm confused again. This has duplicates but you said you
> did not want duplicates? Which is it?
>
> ...
>
>> c...@iupui.edu
>> c...@iupui.edu
>> There were 27 lines in the file with From as the first word
>>
>
> And this is reporting the number of lines in the output
> rather than the file (I think). Which do you want?
>
> Its easy enough to change the code to govre the output
> you demonstrate, but that's not what you originally asked
> for. So just make up your mind exactly what it is you want
> out and we can make it work for you.
>
> --
> Alan G
> Author of the Learn to Program web site
> http://www.alan-g.me.uk/
> http://www.amazon.com/author/alan_gauld
> Follow my photo-blog on Flickr at:
> http://www.flickr.com/photos/alangauldphotos
>
>
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