Hi,
I am writting a python script and I am running out of time. I need to so some things that I know pretty well in bash, so I just wonder how can I embed some bash lines into a python script.
Thanks
This may sound strange, but I need a better way to build python scripts than opening a file with nano/vi, change something, quit the editor, and type in python script.py, over and over again.
I need to build the script on a webserver without any gui. Any ideas how can I improve my workflow?
I have Python classes, of which I need only one instance at runtime, so it would be sufficient to have the attributes only once per class and not per instance. If there would be more than one instance (what won't happen), all instance should have the same configuration. I wonder which of the following options would be better or more "idiomatic" Python.
Class variables:
MyController(Controller):
path = "something/"
childs = [AController, BController]
def action(request):
pass
Instance ariables:
MyController(Controller):
def __init__(self):
self.path = "something/"
self.childs = [AController, BController]
def action(self, request):
pass
Hi,
I want to tokenize a given mathematical expression into a binary tree like this:
((3 + 4 - 1) * 5 + 6 * -7) / 2
'/'
/ \
+ 2
/ \
* *
/ \ / \
- 5 6 -7
/ \
+ 1
/ \
3 4
Is there any pure Python way to do this? Like passing as a string to Python and then get back as a tree like mentioned above.
Thanks.
I have just come across quantmod, and I would like to use it from Python. However I am not sure how to use quantmod from a Python script.
Has anyone done this before - any ideas or suggestions on how to get started?
Hi,
I wrote a python module. Running python filename.py, only checks for syntax errors. Is there a tool, which checks for runtime errors also, like concatenating int with string etc..
Thank you
Bala
I am a newcomer to Python and am converting a Perl script. What is the Python equivalent to...
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
Any help is greatly appreciated.
When I try to print a Unicode string in a windows console, I get a "UnicodeEncodeError: 'charmap' codec can't encode character ...." error. I assume this is because the Windows console does not accept Unicode-only characters. What's the best way around this? Is there any way I can make Python automatically print a "?" instead of failing in this situation?
Edit: I'm using Python 2.5.
Hello. I have a Java app that takes pretty much time to be initialized (so I can't use command-line like interface) and I need to pass text and receive the output of a Java method from Python. Is it possible to load the Java application, have it opened all the time the Python script runs and use a method from that app?
How would you prompt the user for some input but timing out after N seconds?
Google is pointing to a mail thread about it at http://mail.python.org/pipermail/python-list/2006-January/533215.html but it seems not to work. The statement in which the timeout happens, no matter whether it is a sys.input.readline or timer.sleep(), I always get:
<type 'exceptions.TypeError'>: [raw_]input expected at most 1 arguments, got 2
which somehow the except fails to catch.
Hi all,
Matplotlib and pylab doesn't work in python cgi. but it's working properly in python shell.. Any one can help me....... Plz.......
Thanks in advance......
I need to create a large matrix (array) structure (3 axis) and each element should store the reference to a Python object (myclass instance). Is it possible to use numpy to create such an array. Which data type should I use in order to store Python references?
The advantage of numpy is the support of slicing at different levels. The alternativee is to create a nested (nested) list but it is a cumbersome solution.
I'd like my Python script to read some data out of a postgresql dump file. The Python will be running on a system without postgresql, and needs to process the data in a dump file.
It looks fairly straightforward to parse the CREATE TABLE calls to find the column names, then the INSERT INTO rows to build the contents. But I'm sure there would be quite a few gotchas in doing this reliably. Does anyone know of a module which will do this?
Hi Everyone,
I am really new to Python, and programming in general, but I have a python script I would like to run at regular intervals. I am running windows 7. What is the best way to accomplish this? Easiest way?
Any help you can provide will be very much appreciated!
Brock
In Python, is there a mean to enforce the use of spaces or tabs indentation with a per file basis ?
Well, perhaps "enforce" is too strong, its more like "recommands".
I keep getting files with mixed indentation and this is annoying... (to say the least) Python itself can tell when there is a problem, but I am searching something to do that at the editor level, like it exists for the charset.
Is there any python library that can keep a client-side SQLite database in sync with a server-side PostgreSQL database?
There are solutions for Java, such as Daffodil or SymmetricDS. Is there something similar for python?
Hi All,
I know that there is the PyObjC bridge is OSX and what I want to do is to put a python application/script in the rightclick context menu of OS X. there is the OnMyCommand plugin but I dont think that supports python. I've had a look at how to do it in Carbon/ Objective-C and i'll admit it im a wuss and am just not smart enough yet to grok how to do it (I aint even close to groking it actually.)
Anybody got any idea's on how I might go about this?
Cheers
I have a bunch of HTML files I downloaded using HTTPLIB2 package in Python. ' ' are showing as 'Â '.
02/12/2004Â is showing while 02/12/2004 is the desired format.
How do I replace the 'Â ' with ' ' in Python? Thanks a lot!
Hey,
I'm new to python so I really don't know the language very well.
the following example was taken from here http://docs.python.org/library/json.html
>>> import json
>>> json.loads('["foo", {"bar":["baz", null, 1.0, 2]}]')
[u'foo', {u'bar': [u'baz', None, 1.0, 2]}]
what does the u mean? and how do i know which elements are available in the dictionary?
I've just downloaded OpenCV's trunk and now I'm trying to build it with MinGW. I read the manual and get .dll's compiled, but that's all - "interfaces/python" contains only some .i and .cmake files. How can I really get new python interface? Where I can find new cv.pyd/libcv.dll.a (because a compiled version from official site crashes sometimes and I saw this bug as "fixed" in Trac)?
How would you convert an integer to base 62 (like hexadecimal, but with these digits: '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ').
I have been trying to find a good Python library for it, but they all seems to be occupied with converting strings. The Python base64 module only accepts strings and turns a single digit into four characters. I was looking for something akin to what URL shorteners use.
How can I write to files using Python (on Windows) and use the Unix end of line character?
e.g. When doing:
f = open('file.txt', 'w')
f.write('hello\n')
f.close()
Python automatically replaces \n with \r\n.
Hi guys, I had written a program in Python 3, but now want to convert it into Python 2 code. Are there any utilities to do that automatically?
Thanks, R
I need a python script that will do the following:
connect to a URL, and that URL will return a number like 1200.
Use the number, to download xml files named: 1 to x where x is the number from #1.
store the files in a particular directory.
Sorry I've never written a python script, so if you could guide me along that would be great (maybe with a some comments).
I will be running this as a cron job if that matters.
Hi everyone,
I have the following input:
input = [(dog, dog, cat, mouse), (cat, ruby, python, mouse)]
and trying to have the following output:
outputlist = [[0, 0, 1, 2], [1, 3, 4, 2]]
outputmapping = {0:dog, 1:cat, 2:mouse, 3:ruby, 4:python, 5:mouse}
Any tips on how to handle given with scalability in mind (var input can get really large).