I occasionally see the list slice syntax used in Python code like this:
newList = oldList[:]
Surely this is just the same as:
newList = oldList
Or am I missing something?
Somehow, this works fine in the Maya/Python script editor, but fails when it's inside of my module code. Anyone have any ideas?
class ControlShape(object):
def __init__(self, *args, **kwargs):
print 'Inside ControlShape...'
class Cross(ControlShape):
def __init__(self, *args, **kwargs):
print 'Entering Cross...'
super(Cross, self).__init__(*args, **kwargs)
print 'Leaving Cross...'
x = Cross()
This gives me a TypeError: super(type, obj): obj must be an instance or subtype of type.
got this error in adminpage after I try to save something into model
TypeError at /admin/some/model/1/
int() argument must be a string or a number, not 'RelatedManager'
django 1.2.1
python 2.6.5
os fedora core6
If possible I would like to use the following structure for a command however I can't seem to figure out how to achieve this in Python:
./somescript.py arg <optional argument> -- "some long argument"
Would it be possible to achieve this in a feasible manner without too much dirty code? Or should I just reconsider the syntax (which is primarily preference).
Thanks!
Hello,
Sometimes I break long conditions in IFs to several lines. The most obvious way to do this is:
if (cond1 == 'val1' and cond2 == 'val2' and
cond3 == 'val3' and cond4 == 'val4'):
do_something
Isn't very very appealing visually, because the action blends with the conditions. However, it is the natural way using correct Python indentation of 4 spaces.
Edit:
By the way, for the moment I'm using:
if ( cond1 == 'val1' and cond2 == 'val2' and
cond3 == 'val3' and cond4 == 'val4'):
do_something
Not very pretty, I know :-)
Can you recommend an alternative way ?
Does anyone have experience using a Python HTML sanitizer / scrubber / filter?
I'm looking for a module that will remove any HTML tags from a string that are not found in a whitelist. Of course I've Googled it but haven't found anything definitive.
Thanks,
Everett
Hi,
I'm building a download manager in python for fun, and sometimes the connection to the server is still on but the server doesn't send me data, so read method (of HTTPResponse) block me forever. This happens, for example, when I download from a server, which located outside of my country, that limit the bandwidth to other countries.
How can I set a timeout for the read method (2 minutes for example)?
Thanks, Nir.
I wrote this code in VB to label columns in a table but now im writting a python script to automate the process and i can't make it work. Any thoughts??
Static v1 as variant
Static v2 as variant
Dim Output as double
Dim Start as double
Start = 1
If v2 = [XMIN] Then
Output = v1
Else
Output = v1 + 1
End If
v1 = Output
v2 = [XMIN]
I have a solution which I developed in VS2008 and which I am trying to add to Source Control (TFS 2010, though the issue happened in TFS 2008 as well). I have several TFS workspaces on my computer and I have access to several Team Projects.
When I right click the solution in my Solution Explorer and choose the "Add Solution to Source Control" option I am never given an option of choosing which Workspace or which Team Project to add the existing solution too. VS2008 then proceeds to add it to the same team project every time. I have tried selecting an alternate workspace/team project in every window where I can see an option for it but it always adds it back to the same one. I even tried changing the name of my new workspace so that alphabetically it was the first thinking that it might be somehow related to that... no luck.
I then tried goign to the Change Source Control window where you can add/remove bindings on a solution/project but that window also defaults to the same Team Project as trying to add the solution directly does...
Any help would be greatly appreciated with this, maybe I'm just missing something?
I am new to distutils.. I am trying to include few data files along with the package.. here is my code..
from distutils.core import setup
setup(name='Scrapper',
version='1.0',
description='Scrapper',
packages=['app', 'db', 'model', 'util'],
data_files=[('app', ['app/scrapper.db'])]
)
The zip file created after executing python setup.py sdist does not include the scrapper.db file. I have scrapper.db file in the app directory..
thanks for the help.
when i use client.mutateRow(self.tableName, row, mutations) to write data to hbase .
there is a exception,
IOError: IOError(message="Trying to contact region server Some server, retryOnlyOne=true, index=0, islastrow=true, tries=9, numtries=10, i=0, listsize=1, region=test,,1276665207312 for region test,,1276665207312, row 'hello', but failed after 10 attempts.\nExceptions:\n")
i use http://pypi.python.org/pypi/hbase-thrift/0.20.4 to write hbase.
seems it is a library bug.
anyone can help me ?
In need to determine the angle(s) between two n-dimensional vectors in Python. For example, the input can be two lists like the following: [1,2,3,4] and [6,7,8,9].
Can anybody help me? Thanks in advance!
Hi guys
I'm looking for an equivalent in python of dictionary.get(key, default) for lists. Is there any one liner idiom to get the nth element of a list or a default value if not available?
Thanks!
Let say i want to read the integers a, b and c from stdin (in one line, do not need to press return after each number). In c++, i would just do:
cin a b c;
How to do this in Python ?
I want to write a database app in Python, using SQLite and wxPython.
My only "experience" is 1 class on basic C++ console programming and OOP concepts.
Which IDE would be best for my situation?
In case it matters, I only need my new program to run on Windows, and I do want to make it "portable".
Thank you.
Hi
I new to python and I read from someone else of the example code below:
class A:
def current(self):
data = Data(a=a,b=b,c=c)
return data
class B(A):
#something here
#print data a b c
How do I print out the data a, b, and c?
i have to send F2 key to telnet host how do i send it using python...using getch() i found that this '<' used for F2 key but while sending its not working..i think there will be some way to send special function keys but i am not able to find it..if somebody knows please help me.thanks in advance
I need to count the number of files in a directory using Python.
I guess the easiest way is len(glob.glob('*')), but I also count the directory as file.
Is there any way to count only the files in a directory?
I'd like to be able to parse out the city, state or zip from a string in python. So, if I entered
Boulder, Co
80303
Boulder, Colorado
Boulder, Co 80303
...
any variation of these it would return the city, state or zip.
This is all going to be user inputted data and inputted in one text field.
I have a lot of Perl scripts that looks something like the following. What it does is that it will automatically open any file given as a command line argument and in this case print the content of that file. If no file is given it will instead read from standard input.
while ( <> ) {
print $_;
}
Is there a way to do something similar in Python without having to explicitly open each file?
In a Python Google App Engine app I'm writing, I have an entity stored in the datastore that I need to retrieve, make an exact copy of it (with the exception of the key), and then put this entity back in.
How should I do this? In particular, are there any caveats or tricks I need to be aware of when doing this so that I get a copy of the sort I expect and not something else.
I'm a newbie to regular expressions and I have the following string:
sequence = ["{\"First\":\"Belyuen,NT,0801\",\"Second\":\"Belyuen,NT,0801\"}","{\"First\":\"Larrakeyah,NT,0801\",\"Second\":\"Larrakeyah,NT,0801\"}"]
I am trying to extract the text Belyuen,NT,0801 and Larrakeyah,NT,0801 in python. I have the following code which is not working:
re.search('\:\\"...\\', ''.join(sequence))
I.e. I want to get the string between characters :\ and \.
Hi All
I would like to handle time series in python.
I have been suggested to use scikit.timeseries but I need to handle up to microseconds and this last, as far as I know, handles up to milliseconds.
Do you know any other library able to do that? At some point I need to merge 2 time series sampled at different time, and I would like to avoid rewriting such kind of features or any new classes from scratch whenever it is possible.
I thank you all
AFG