Hey,
Im wondering, how can i get a SUM of a rating entity i get from the datastore (python)?
should i:
ratingsum = 0
for rating in ratings:
ratingsum + rating
print ratingsum
?
I have the following file like this:
2 qid:1 1:0.32 2:0.50 3:0.78 4:0.02 10:0.90
5 qid:2 2:0.22 5:0.34 6:0.87 10:0.56 12:0.32 19:0.24 20:0.55
...
he structure is follwoing like that:
output={}
rel=2
qid=1
features={} # the feature list "1:0.32 2:0.50 3:0.78 4:0.02 10:0.90" output.append([rel,qid,features])
...
How can I write my python code to load the data, thanks
How would you write a list comprehension in python to generate a series of n-1 deltas between n items in an ordered list?
Example:
L = [5,9,2,1,7]
RES = [5-9,9-2,2-1,1-7] = [4,7,1,6] # absolute values
I'm using textmate for the first time basically, and I am lost as to what keys map to these funny symbols.
using python bundles, what keys do I press for:
run
run with tests
run project unit tests
Also, with textmate, do I actually define a project in textmate or do I just work on the files and textmate doesn't create its own .project type file ?
As some of you may know in python2.7/3.2 we'll get OrderedDict with PEP372 however one of the reason the PEP existed was because everyone did their own implementation and they were all sightly incompatible.
So which one of the 8 current implementations link text is backwards compatible with the 2.7 odict from python 2.7 in a way we can start using that now and depend on 2.7 in a couple of months?
my python xml parser fails if there´s a comment at the beginnging of an xml file like::
<?xml version="1.0" encoding="utf-8"?>
<!-- Script version: "1"-->
<!-- Date: "07052010"-->
...
is it illegal to place a comment like this?
I know about os.nice() it works perfect for parent process, but I need to do renice of my child subprocesses. I found way to do this, but it seems to be not very handy and too excessive:
os.system("renice -n %d %d" % ( new_nice, suprocess.pid ) )
And it isn't return resulting nice level after renicing.
Is there more clean way to renice subprocesses in python?
I'm using Python to read and write SAS datasets, using pyodbc and the SAS ODBC drivers. I can load the data perfectly well, but when I save the data, using something like:
cursor.execute('insert into dataset.test VALUES (?)', u'testing')
... I get a pyodbc.Error: ('HY004', '[HY004] [Microsoft][ODBC Driver Manager] SQL data type out of range (0) (SQLBindParameter)') error.
The problem seems to be the fact I'm passing a unicode string; what do I need to do to handle this?
I get an "unrecognized HTTP method" when trying to do a REPORT request using httplib and gae. Is there a workaround available? An httplib patch for gae? Do you I have to find another host in order to do this natively?
According to the docs, only certain fetch actions are valid: GET, POST, HEAD,
PUT, and DELETE: http://code.google.com/appengine/docs/python/urlfetch/
fetchfunction.html
I have domain on a shared hosting provider. How do I find the direct IP address of my domain using Python?
Is it possible to post to a script on my domain using the IP address and not the website itself?
Thanks.
This code should automatically connect players when they enter a game.
But the problem is when two users try to connect at the same time - in this case 2nd user can easily overwrite changes made by 1st user ('room_1' variable).
How could I make it thread safe?
def join(userId):
users = memcache.get('room_1')
users.append(userId)
memcache.set('room_1', users)
return users
I'm using Google App Engine (python) and going to implement simple game-server for exchanging peers given by Adobe Stratus.
I'm using Python, for what it's worth, but will accept answers in any applicable language.
I've tried writing to /proc/$pid/cmdline, but that's a readonly file.
I've tried assigning a new string to sys.argv[0], but that has no perceptible impact.
Are there any other possibilities? My program is executing processes via os.system (equivalent to system(3)) so a general, *NIX-based solution using an additional spawning process would be fine.
I'm using python's sendmail in the following way:
msg = <SOME MESSAGE>
s = smtplib.SMTP('localhost')
s.sendmail(me, you, msg.as_string())
s.quit()
This usually works fine but it fails when the message is pretty big (around 200 lines). Any ideas what can cause this?
Hello,
I have the following code in Python:
linkHTML = "<a href=\"page?q=%s\">click here</a>" % strLink
The problem is that when strLink has spaces in it the link shows up as
<a href="page?q=with space">click here</a>
I can use strLink.replace(" ","+")
But I am sure there are other characters which can cause errors. I tried using
urllib.quote(strLink)
But it doesn't seem to help.
Thanks!
Joel
Hi all,
i am quite new in python.
I am receiving (through pyserial) string with data values.
How can I parse these data to particular data structure?
I know that
0-1 byte : id
2-5 byte : time1 =>but little endian (lsb first)
6-9 byte : time2 =>but little endian (lsb first)
and I looking for a function:
def parse_data(string):
data={}
data['id'] = ??
data['time1'] = ??
data['time2'] = ??
return data
thanks
Would what mentioned in the title be possible? Python module style that is. See this example for what I exactly mean.
index.php
<?php
use Hello\World;
World::greet();
Hello/World.php
<?php
namespace Hello\World;
function greet() { echo 'Hello, World!'; }
Would this be possible?
I am using python and would like a simple api or regex to check for a domain name's validity. By validity I am the syntactical validity and not whether the domain name actually exists on the Internet or not.
Dear All,
Let say I have a model:
class A(db.Model):
B = db.StringProperty()
C = db.StringProperty()
How do I query if I wanted to search all empty property (not None, just empty) in C using python?
How do I get the exact feed.xml/rss.xml/atom.xml path of a website?
For example, I supplied "http://www.example.com/news/today/this_is_a_news", but the rss is pointing to "http://www.example.com/rss/feed.xml", most modern browsers have this features already and I'm curious how did they get them.
Can you cite an example code in ruby, python or bash?
I need to run a lot of Django management commands in the crontab and want to log the output of each run to a special timestamped file. Is there a Django or Python module to help me do this or do I just have to roll my own?
Hi, I own a avermedia volar HX usb stick, I want to capture fromthe composite input , but I can't because I'm unable to select the input. I'm using gstreamer with + python, I think I need to use gsttuner select input but I have no experience using gstreamer's interfaces. Could someone post a simple example?
Thanks!
I want to use some features of python like as Tuples and Sets in c#. should I implement them? or there are already implemented? could anybody knows a library of dynamic data structures for .net languages?