python

compare two files in python

in a.txt i have the text(line one after the other) login;user;name login;user;name1 login;user in b.txt i have the text login;user login;user login;user;name2 after comparing it should display in a text file as login;user;name login;user;name1 login;user;name2.... How can it be done using python? ...

Easiest ways to generate graphs from Python?

I'm using Python to process CSV files filled with data that I want to run calculations on, and then graph. I'm looking for a library to use that I can send processed CSV information to, or a dict of some sort, and then choose different graphing styles with. Does anyone have any recommendations? ...

LXML E builder for java?

There is one thing I really love about LXML, and that the E builder. I love that I can throw XML together like this: message = E.Person( E.Name( E.First("jack") E.Last("Ripper") ) E.PhoneNumber("555-555-5555") ) To make: <Person> <Name> <First>Jack</First> <Last>Ripper</Last> </Name> <PhoneNumber>555-555-5...

Access is denied error with pregenerated .pyc or .pyo files

Hi All, I am getting an Access is denied error while I am trying to run the .pyo file by double click or from the command prompt. Lets say I have abc.py (keeping main method entry point) which imports files xyz.py and imports wx etc. I generate the .pyo file. But once I try to run abc.pyo I get the access is denied error. I am not ge...

Backup Google Calendar programmatically: https://www.google.com/calendar/exporticalzip

I'm struggling with writing a python script that automatically grabs the zip fail containing all my google calendars and stores it (as a backup) on my harddisk. I'm using ClientLogin to get an authentication token (and successfully can obtain the token). Unfortunately, i'm unable to retrieve the file at https://www.google.com/calendar/...

Python TKinter connect variable to entry widget

Hi everyone, I'm trying to associate a variable with a Tkinter entry widget, in a way that: Whenever I change the value (the "content") of the entry, mainly by typing something into it, the variable automatically gets assigned the value of what I've typed. Without me having to push a button "Update value " or something like that first...

WebService client libraries for Python and Perl

I want to access web service in Python or/and Perl scripts. What are the most popular and reliable libraries today? I read this question, and I know about SOAPpy and ZSI. Can anybody say something about this libraries? Are they reliable enough for use in production? ...

Entity references and lxml

Here's the code I have: from cStringIO import StringIO from lxml import etree xml = StringIO('''<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE root [ <!ENTITY test "This is a test"> ]> <root> <sub>&test;</sub> </root>''') d1 = etree.parse(xml) print '%r' % d1.find('/sub').text parser = etree.XMLParser(resolve_entities=False) d2 =...

How do I join three tables with SQLalchemy and keeping all of the columns in one of the tables?

So, I have three tables: The class defenitions: engine = create_engine('sqlite://test.db', echo=False) SQLSession = sessionmaker(bind=engine) Base = declarative_base() class Channel(Base): __tablename__ = 'channel' id = Column(Integer, primary_key = True) title = Column(String) description = Column(String) link = ...

Machine Learning Algorithm for Predicting Order of Events?

Simple machine learning question. Probably numerous ways to solve this: There is an infinite stream of 4 possible events: 'event_1', 'event_2', 'event_4', 'event_4' The events do not come in in completely random order. We will assume that there are some complex patterns to the order that most events come in, and the rest of the event...

command CHOICE in DOS batch replacement/reproduction in python

I want to reproduce the behavior of the command CHOICE in DOS batch but with python. raw_input requires the user to type whatever then press the ENTER/RETURN key. What I really want is for the user to press a single key and the script to continue from there. ...

Python: try statement single line

Is there a way in python to turn a try/except into a single line? something like... b = 'some variable' a = c | b #try statement goes here Where b is a declared variable and c is not... so c would throw an error and a would become b... ...

Which Python module to use for Memcached?

Hello folks, I am implementing caching for my Python application and I want to use memcached. Which module do you suggest me to use? There are so many that I don't know which one to choose. Thanks, Boda Cydo. ...

Python float copy question

Hi, I'm puzzled by some behaviour I'm seeing when copying a float array member into another variable - please help! For example data_entry[1] = 9.6850069951 new_value = data_entry[1] <comment> #print both 9.6850069951 9.6850663300 I'm aware of the problem of binary storage of floats but I thought with a direct copy of memor...

How can I catch non valid ASCII characters in Panic Coda?

Sometimes I get errors while coding, because of typing some combination of keys (eg. ALT + SHIFT + SQUARE BRACKET) in a wrong way. So I get Syntax Error in Python, but I can't see where the illegal character is, 'cause Coda do not show it to me. Any solution? ...

Django: testing get query

Okay, so I am sick of writing this... res = Something.objects.filter(asdf=something) if res: single = res[0] else: single = None if single: # do some stuff I would much rather be able to do something like this: single = Something.objects.filter(asdf=something) if single: #do some stuff I want to be able to grab a single o...

GQL how to select by UserProperty

Hey I have this code but it doesn't work because it is expecting a string. How can I make it work? class Atable(BaseModel): owner = db.UserProperty() (...) --------- // -------------- query = "SELECT * FROM Atable WHERE owner=", users.get_current_user() results = db.GqlQuery(query) How can I fix that search? Thanks :) I...

How can I make mock-0.6 return a sequence of values?

I'm using the mock-0.6 library from http://www.voidspace.org.uk/python/mock/mock.html to mock out a framework for testing, and I want to have a mock method return a series of values, each time it's called. Right now, this is what I figured should work: def returnList(items): def sideEffect(*args, **kwargs): for item in items: ...

Capture subprocess output

Hi there, I learned that when executing commands in Python, I should use subprocess. What I'm trying to achieve is to encode a file via ffmpeg and observe the program output until the file is done. Ffmpeg logs the progress to stderr. If I try something like this: child = subprocess.Popen(command, shell=True, stderr=subprocess.PIPE) co...

Measuring ping latency of a server - Python

Hi folks, I have a list of server IP addresses, I need to check if each one is online and how long the latency is. I haven't found any straight forward ways of implementing this, and there seems to be a few problems in calculating latency accurately. Any ideas? ...