Re: [Tutor] How it is better than java
On Tue, 20 Sep 2011 10:27:12 +1000 Steven D'Aprano wrote: > There are three misunderstandings with that statement. > [snip] > There's also JPype, which claims to give full access to Java > libraries in Python. Now: this was one of the best write-ups on the subject I read. Concise, clear, documented. Nice way to start the day! :o /mac ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] How it is better than java
On Tue, Sep 20, 2011 at 3:21 AM, Mac Ryan wrote: > On Tue, 20 Sep 2011 10:27:12 +1000 > Steven D'Aprano wrote: > > > > There are three misunderstandings with that statement. > > [snip] > > There's also JPype, which claims to give full access to Java > > libraries in Python. > > Now: this was one of the best write-ups on the subject I read. Concise, > clear, documented. Nice way to start the day! :o Ditto - and as a slight aside, it's interesting to note that .NET languages (VB, C# specifically) are also compiled into the MSIL which can't run without the .NET runtime. To my understanding, this is quite similar (or the same thing) as other "interpreted" languages. -Wayne ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] OptionParser
> from optparse import OptionParser
I am not sure what version of Python you are using but from 2.7+ optparse is
deprercated. You may want to use that if you can.
> I don't really understand what dest and action in the arguments to
> parser.add_option mean.
Here is your usage:
>>> parser = OptionParser(usage="blahblahblah")
>>> parser.add_option("-f", "--file", dest="filename")
>>> (options, args) = parser.parse_args(['-f filename.csv']) # test in
>>> interpreter
>>> options.filename
' filename.csv' # Note the space before filename
>>> print options.filename
filename.csv
See the documentation: http://docs.python.org/library/optparse.html
Ramit
Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology
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Re: [Tutor] OptionParser
Thank you Parsad.
I am using Python 2.7.1+
You are right, looks like optparse is replaced by argparse.
My problem was that I was checking output and not options.output.
cheers,
Mina
On 11-09-20 02:27 PM, Prasad, Ramit wrote:
from optparse import OptionParser
I am not sure what version of Python you are using but from 2.7+ optparse is
deprercated. You may want to use that if you can.
I don't really understand what dest and action in the arguments to
parser.add_option mean.
Here is your usage:
parser = OptionParser(usage="blahblahblah")
parser.add_option("-f", "--file", dest="filename")
(options, args) = parser.parse_args(['-f filename.csv']) # test in interpreter
options.filename
' filename.csv' # Note the space before filename
print options.filename
filename.csv
See the documentation: http://docs.python.org/library/optparse.html
Ramit
Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology
712 Main Street | Houston, TX 77002
work phone: 713 - 216 - 5423
This email is confidential and subject to important disclaimers and
conditions including on offers for the purchase or sale of
securities, accuracy and completeness of information, viruses,
confidentiality, legal privilege, and legal entity disclaimers,
available at http://www.jpmorgan.com/pages/disclosures/email.
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Re: [Tutor] OptionParser
We are glad to help! If you do have future problems feel free to post again, but would you mind posting in plain text (or at least without a background)? Thanks. Ramit Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology 712 Main Street | Houston, TX 77002 work phone: 713 - 216 - 5423 This email is confidential and subject to important disclaimers and conditions including on offers for the purchase or sale of securities, accuracy and completeness of information, viruses, confidentiality, legal privilege, and legal entity disclaimers, available at http://www.jpmorgan.com/pages/disclosures/email. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
[Tutor] quick data structures question
Hey guys, I want to write a short script that takes from an input excel file w/ a bunch of rows and columns. The two columns I'm interested in are "high gains" and "genes." I want the user to write: >>>Which genes are associated with gains over 20%? and then I want the script to search through the excel file, find in the "high gains" column when the number is greater than 20%, and then store the corresponding genes in that row (but in the "genes" column). I know this should be super simple, but I'm having trouble breaking the problem into smaller, manageable pieces. For instance, the "high gains" column does not have just integers, it is in the format %. Also, I'd like for the final script to be usable in R if possible, too. pseudocode is something like this: for line in lines: if item in "high gains" > 20 create new dictionary store genes from "genes" into new dictionary Much thanks in advance! ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] quick data structures question
Hi Fred,
Here is my attempt to solve your task.
import xlrd
def extract(file_name):
choice_file = xlrd.open_workbook(file_name)
choice_sheet = choice_file.sheet_by_index(0)
gene_dict = {}
for row_num in range(1,choice_sheet.nrows):
row_vals = choice_sheet.row_values(row_num)
if int(row_vals[0] * 100) > 20:
gene_dict[row_vals[1]] = row_vals[0] * 100
return gene_dict
Here are few assumptions I made.
1. The your excel file has just two column with headers. Column 1 is High gain
written in % format and column 2 is the gene.
2. that excel returns % format as decimals which is float in python; hence
my conversion to int.
Try this out and let me know how it goes.
Watch the indents carefully. I typed from my blackberry.
HTH.
Sent from my BlackBerry wireless device from MTN
-Original Message-
From: Fred G
Sender: tutor-bounces+delegbede=dudupay@python.org
Date: Tue, 20 Sep 2011 23:28:43
To:
Subject: [Tutor] quick data structures question
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Re: [Tutor] quick data structures question
As a follow up Fred, you have to install the xlrd package to use it. It helps you interact with an excel file even if you don't have excel installed on your pc. Sent from my BlackBerry wireless device from MTN -Original Message- From: Fred G Sender: tutor-bounces+delegbede=dudupay@python.org Date: Tue, 20 Sep 2011 23:28:43 To: Subject: [Tutor] quick data structures question ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
