I'm writing a parser/handler for a network protocol; the protocol is predefined and I am writing an adapter, in python. In the process of decoding the incoming messages, I've been considering using the idiom I've seen suggested elsewhere for "switch" in python: use a hash table whose keys are the field you want to match on (a string in ...
One of our page templates is made up of a bunch of macros. These items are a bunch of html tables. Now, I want a couple of these tables in a Python script to create a PDF. Is there a way call a macro from a Python script and get back the HTML that is produced? If so, can you explain? Thanks Eric ...
Basically, I want to extract the strings "AAA", "BBB", "CCC", "DDD" from a text file.. ...... (other text goes here)..... <TD align="left" class=texttd><font class='textfont'>AAA</font></TD> ..... (useless text here)..... <TD align="left" class=texttd><font class='textfont'>BBB</font></TD> ....(more text)..... <TD align="left" class=tex...
I have zero idea as to why I'm getting this error. ...
Hello, I have data coming in to a python server via a socket. Within this data is the string '<port>80</port>' or which ever port is being used. I wish to extract the port number into a variable. The data coming in is not XML, I just used the tag approach to identifying data for future XML use if needed. I do not wish to use an XML pyt...
I currently use WebFaction for my hosting with the basic package that gives us 80MB of RAM. This is more than adequate for our needs at the moment, apart from our backups. We do our own backups to S3 once a day. The backup process is this: dump the database, tar.gz all the files into one backup named with the correct date of the backup...
I need it to open 10 processes, and each time one of them finishes I want to wait few seconds and start another one. It seems pretty simple, but somehow I can't get it to work. ...
Using Python2.4 I want to capture output from a mysql command. One caveat is that I need to pipe the SQL statement using an echo. echo 'SELECT user FROM mysql.user;' | mysql I see example using call, os.system, popen but what is best to use for my version of python and capturing the output in a tuple. Thanks ...
This question falls into the "yes - this works, yes - this is ugly, yes - there is probably a better way" category. I want to use a regular expression to pull groups out of a match and then print the group number and the group value. It is to show someone how regular expressions work and to keep track of the values of each group. The cod...
In my Pylons app, some content is located at URLs that look like http://mysite/data/31415. Users can go to that URL directly, or search for "31415" via the search page. My constraints, however, mean that http://mysite/data/000031415 should go to the same page as the above, as should searches for "0000000000031415." Can I strip leading...
Hi, I wrote an algorithm using python and matplotlib that generates histograms from some text input data. When the number of data input is approx. greater than 15000, I get in the (append) line of my code: mydata = [] for i in range(len(data)): mydata.append(string.atof(data[i])) the error: Traceback (most recent call last): F...
I have a bunch of csv datasets, about 10Gb in size each. I'd like to generate histograms from their columns. But it seems like the only way to do this in numpy is to first load the entire column into a numpy array and then call numpy.histogram on that array. This consumes an unnecessary amount of memory. Does numpy support online binnin...
Like in: u'Hello' My guess is that it indicates "unicode", is it correct? If so, since when is it available? ...
I am currently in the planning stages of a game for google app engine, but cannot wrap my head around how I am going to handle AI. I intend to have persistant NPCs that will move about the map, but short of writing a program that generates the same XML requests I use to control player actions, than run it on another server I am stuck on...
When I run the following code under Python 2.6 import logging from logging.handlers import RotatingFileHandler rfh = RotatingFileHandler("testing.log", delay=True) logging.getLogger().addHandler(rfh) logging.warning("Boo!") then the last line throws AttributeError: RotatingFileHandler instance has no attribute 'level'. So I add the ...
I need to open multiple files (2 input and 2 output files), do complex manipulations on the lines from input files and then append results at the end of 2 output files. I am currently using the following approach: in_1 = open(input_1) in_2 = open(input_2) out_1 = open(output_1, "w") out_2 = open(output_2, "w") # Read one line from each...
I have a python module that imports a module generated with swig. When I try to call the show() function of matplotlib later in that module, python crashes without any hint, what went wrong. When I comment the import statement with the swig generated module out, everything works fine. Does anybody have a clue to what could be the reason ...
I have some random string, let's say : s = "This string has some verylongwordsneededtosplit" I'm trying to write a function trunc_string(string, len) that takes string as argument to operate on and 'len' as the number of chars after long words will be splitted. The result should be something like that str = trunc_string(s, 10) str =...
is there any option free and opensource to run python from usb stick on windows system (i,e pyhon installed on usb stick ) and can run on every windows sytsem just by pluging the usb stick ? ...
First off, I'm relatively new to Google App Engine, so I'm probably doing something silly. Say I've got a model Foo: class Foo(db.Model): name = db.StringProperty() I want to use name as a unique key for every Foo object. How is this done? When I want to get a specific Foo object, I currently query the datastore for all Foo objects ...