On 03/21/2013 10:20 PM, Steven D'Aprano wrote:
On 22/03/13 12:39, Mitya Sirenef wrote:
>
>> You can do it with groupby like so:
>>
>>
>> from itertools import groupby
>> from operator import itemgetter
>>
>> maxDate = "2013-03-21"
>> mmax = list()
>>
>> obs.sort(key=itemgetter('date'))
>>
>> fo
On 22/03/13 12:39, Mitya Sirenef wrote:
You can do it with groupby like so:
from itertools import groupby
from operator import itemgetter
maxDate = "2013-03-21"
mmax= list()
obs.sort(key=itemgetter('date'))
for k, group in groupby(obs, key=itemgetter('date')):
group = [dob for dob
On 22/03/13 11:39, Matthew Johnson wrote:
Dear list,
I have been trying to understand out how to use iterators and in
particular groupby statements. I am, however, quite lost.
groupby is a very specialist function which is not very intuitive to
use. Sometimes I think that groupby is an excell
On 03/21/2013 08:39 PM, Matthew Johnson wrote:
Dear list,
>
> I have been trying to understand out how to use iterators and in
> particular groupby statements. I am, however, quite lost.
>
> I wish to subset the below list, selecting the observations that have
> an ID ('realtime_start') value th
Dear list,
I have been trying to understand out how to use iterators and in
particular groupby statements. I am, however, quite lost.
I wish to subset the below list, selecting the observations that have
an ID ('realtime_start') value that is greater than some date (i've
used the variable name m
On 21/03/2013 16:17, Alan Gauld wrote:
On 21/03/13 13:43, Shall, Sydney wrote:
I have an elementary question provoked by another post today.
1. Is it the case that ALL imported data from a file is a string?
Assuming you mean data read from a file rather than modules imported
using 'import' t
On 21/03/13 13:43, Shall, Sydney wrote:
I have an elementary question provoked by another post today.
1. Is it the case that ALL imported data from a file is a string?
Assuming you mean data read from a file rather than modules imported
using 'import' then the answer is 'it depends'.
Most f
On 03/21/2013 10:03 AM, Dave Angel wrote:
A typo below; sorry.
On 03/21/2013 09:43 AM, Shall, Sydney wrote:
I have an elementary question provoked by another post today.
1. Is it the case that ALL imported data from a file is a string?
No, the imported data is a module. For example
>> 3. Are there defined procedures for doing the required processing?
>
> If you meant conversion functions, int() and float() are examples of
> those. You of course (most of the times) have to make use of string
> manipulation functions (strip(), rstrip(), etc) to extract the exact
> data item yo
On 03/21/2013 09:43 AM, Shall, Sydney wrote:
I have an elementary question provoked by another post today.
1. Is it the case that ALL imported data from a file is a string?
No, the imported data is a module. For example
import sys
print type(sys)
At this point, sys is a object of
On 21/03/2013 13:54, Amit Saha wrote:
On Thu, Mar 21, 2013 at 11:43 PM, Shall, Sydney wrote:
I have an elementary question provoked by another post today.
1. Is it the case that ALL imported data from a file is a string?
2. Does this therefor imply that said data has to be processed appropriat
On Thu, Mar 21, 2013 at 11:43 PM, Shall, Sydney wrote:
> I have an elementary question provoked by another post today.
>
> 1. Is it the case that ALL imported data from a file is a string?
> 2. Does this therefor imply that said data has to be processed appropriately
> to generate the data in the
I have an elementary question provoked by another post today.
1. Is it the case that ALL imported data from a file is a string?
2. Does this therefor imply that said data has to be processed
appropriately to generate the data in the form required by the program?
3. Are there defined procedures
On 03/21/2013 08:09 AM, Arijit Ukil wrote:
Thanks for the help.
You're welcome.
You replied privately, instead of including the list, so I'm forwarding
the response so everyone can see it. You also top-posted, so the
context is backwards.
After running your code, I am getting the follow
Hi Arijit,
On Thu, Mar 21, 2013 at 8:42 PM, Arijit Ukil wrote:
>
> I am new to python. I like to calculate average of the numbers by reading
> the file 'digi_2.txt'. I have written the following code:
>
> def average(s): return sum(s) * 1.0 / len(s)
>
> f = open ("digi_2.txt", "r+")
>
> list_of_l
On 03/21/2013 06:42 AM, Arijit Ukil wrote:
I am new to python.
Since you're new to Python, I won't try to supply you an answer using
list comprehensions, since you've probably not learned them yet.
I like to calculate average of the numbers by reading
the file 'digi_2.txt'. I have written
Please trim unrelated text from emails.
On 21 March 2013 10:42, Arijit Ukil wrote:
> I am new to python. I like to calculate average of the numbers by reading
> the file 'digi_2.txt'. I have written the following code:
>
> def average(s): return sum(s) * 1.0 / len(s)
>
> f = open ("digi_2.txt",
I am new to python. I like to calculate average of the numbers by reading
the file 'digi_2.txt'. I have written the following code:
def average(s): return sum(s) * 1.0 / len(s)
f = open ("digi_2.txt", "r+")
list_of_lists1 = f.readlines()
for index in range(len(list_of_lists1)):
tt = li
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