> I'd really appreciate any suggestions or help, thanks in advance!
Hi Alex if you know that you want only columns 3 and 5, you could also use list
comprehension to fetch the values:
import csv
with open('yourfile.csv','rU') as fo:
#the rU means read using Universal newlines
cr = csv.reader(
>
> The docstring for doctest.DocTestRunner contains the example code
>
> I was looking for.
>
>
Thanks, I will give it a try!
>
> --
>
> Neil Cerutti
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I don't know why but it seems that google groups stripped the indentation from
the code. I just wanted to ensure you that in the examples that I have run
the definition of myfunc contained correctly indented code!
On Monday, 23 September 2013 15:45:43 UTC+1, Luca Cerone wrote:
> ..
> It won't be very good documenation any more but nothing stops you
>
> from examining the result in the next doctest and making yourself
>
> happy about it.
>
>
>
> >>> x = input("indeterminate:")
>
> >>> result = "'{}'".format(x))
>
> >>> result.startswith("'") and result.endswith("'
On Sunday, 22 September 2013 14:39:07 UTC+1, Ned Batchelder wrote:
> On 9/22/13 12:09 AM, Luca Cerone wrote:
>
> > Hi Chris,
>
> > actually my priority is to check that the code is correct. I changed the
> > syntax
>
> > during the development, and I want
> This makes no sense. If you ignore the output, the code could do ANYTHING
>
> and the test would still pass. Raise an exception? Pass. SyntaxError?
>
> Pass. Print "99 bottles of beer"? Pass.
>
if you try the commands, you can see that the tests fail..
for example
.. doctest::
>>> rais
>
> That is not how doctest works. That test fails because its output is:
ok.. is there a tool by which I can test if my code runs regardless the output?
>
> The only wild-card output that doctest recognises is ellipsis, and like
>
> all wild-cards, can match too much if you aren't careful. I
> but if you're using this for a
>
> tutorial, you risk creating a breed of novice programmers who believe
>
> their first priority is to stop the program crashing. Smoke testing is
Hi Chris,
actually my priority is to check that the code is correct. I changed the syntax
during the development,
> And if you ignore the output, the error won't be caught either. What's
>
> the difference?
>
> >>> 1 + 1 #doctest:+IGNORE_OUTPUT (not a real directive)
>
> 1000
>
>
The difference is that in that case you want to check whether the result is
correct or not, because you expect a certain r
Dear Steven,
thanks for the help.
I am aware that I might have used the SKIP directive (as I hinted in my mail).
Even if the fine manual suggests to do so I don't agree with it, though.
The reason is simple: SKIP as the name suggests causes the code not to be run
at all, it doesn't ignore the out
Dear all,
I am writing the documentation for a Python package using Sphinx.
I have a problem when using doctest blocks in the documentation:
I couldn't manage to get doctest to run a command but completely ignoring
the output.
For example, how can I get a doctest like the following to run correct
Thanks Dieter,
> With respect to cookie handling, you do everything right.
>
>
>
> There may be other problems with the (wider) process.
>
> Analysing the responses of your requests (reading the status codes,
>
> the response headers and the response bodies) may provide hints
>
> towards th
>
> > Let me make an additional remark however: you should
> > not expect to get complete details in a list like this - but only
> > hints towards a solution for your problem (i.e.
> > there remains some work for you).
> > Thus, I expect you to read the "cookielib/cookiejar" documentation
> > (pa
Dear all,
first of all thanks for the help.
As for your remark, you are right, and I usually tend to post questions in a
way that is detached from the particular problem I have to solve.
In this case since I only have a limited knowledge of the cookies mechanism (in
general, not only in Python),
>
> I have used "cookielib" externally to "urllib2". It looks
>
> like this:
>
> from urllib2 import urlopen, Request
>
> from cookielib import CookieJar
> cookies = CookieJar()
>
>
>
> r = Request(...)
>
> cookies.add_cookie_header(r) # set the cookies
>
> R = urlopen(r, ...) # make t
Hi everybody,
I am trying to write a simple Python script to solve the "riddle" at:
http://quiz.gambitresearch.com/
The quiz is quite easy to solve, one needs to evaluate the expression between
the curly brackets (say that the expression has value )
and go to the web page:
http://quiz.gambitrese
gt;
>
>
>
>
> [1] https://wheel.readthedocs.org
> [2]
> http://www.pip-installer.org/en/latest/cookbook.html#building-and-installing-wheels
>
>
>
>
>
>
> 2013/8/9 Luca Cerone
>
> Dear all, is there a way to "nest" virtual environments?
>
>
Dear all, is there a way to "nest" virtual environments?
I work on several different projects that involve Python programming.
For a lot of this projects I have to use the same packages (e.g. numpy, scipy,
matplotlib and so on), while having to install packages that are specific
for each project
Thanks for the help Peter!
>
>
>
> >> def make_instancemethod(inst, methodname):
>
> >> return getattr(inst, methodname)
>
> >
>
> > This is just getattr -- you can replace the two uses of
>
> > make_instancemethod with getattr and delete this ;).
>
>
>
> D'oh ;)
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Thanks for the post.
I actually don't know exactly what can and can't be pickles..
not what partialing a function means..
Maybe can you link me to some resources?
I still can't understand all the details in your code :)
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> > doesn't work neither in Python 2.7, nor 3.2 (by the way I can't use Python
> > 3 for my application).
>
> Are you using Windows? Over here on 3.3 on Linux it does. Not on 2.7 though.
No I am using Ubuntu (12.04, 64 bit).. maybe things changed from 3.2 to 3.3?
> from multiprocessing import
Hi Joshua thanks!
> I think you might not understand what Chris said.
> Currently this does *not* work with Python 2.7 as you suggested it would.
> >>> op = map(A.fun,l)
Yeah actually that wouldn't work even in Python 3, since value attribute used
by fun has not been set.
It was my mistake in th
Hi Chris, thanks
> Do you ever instantiate any A() objects? You're attempting to call an
>
> unbound method without passing it a 'self'.
I have tried a lot of variations, instantiating the object, creating lambda
functions that use the unbound version of fun (A.fun.__func__) etc etc..
I have pl
On Tuesday, 6 August 2013 18:12:26 UTC+1, Luca Cerone wrote:
> Hi guys,
>
> I would like to apply the Pool.map method to a member of a class.
>
>
>
> Here is a small example that shows what I would like to do:
>
>
>
> from multiprocessing import Pool
>
Hi guys,
I would like to apply the Pool.map method to a member of a class.
Here is a small example that shows what I would like to do:
from multiprocessing import Pool
class A(object):
def __init__(self,x):
self.value = x
def fun(self,x):
return self.value**x
l = range(10)
> my_thread.join()
Thanks! I managed to make it work using the threading library :)
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> You're back to using separate threads for the reader and the writer.
>
And how do I create separate threads in Python? I was trying to use the
threading library without not too success..
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Thanks this works (if you add shell=True in Popen).
If I don't want to use shell = True, how can I redirect the stdout to
named_pipe? Popen accepts an open file handle for stdout, which I can't open
for writing because that blocks the process...
>
>
> os.mkfifo("named_pipe", 0777)
>
> ls_proc
thanks and what about python 2.7?
>
>
> In Python 3.3 and above:
>
>
>
> p = subprocess.Popen(..., stderr=subprocess.DEVNULL)
P.s. sorry for the late reply, I discovered I don't receive notifications from
google groups..
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Thanks MRAB,
>
> You need to ensure that the pipe is already open at the other end.
So I need to open the process that reads the pipe before writing in it?
>
>
>
> Why are you using a named pipe anyway?
For some bug in ipython (see my previous email) I can't use subprocess.Popen
and pipe in
Hi Alister,
> Are you sure you are using the correct tool for the task?
Yes. For two reasons: 1. I want to learn how to do this in Python :) 2. for an
application I have in mind I will need to run external tools (not developed by
me) and process the output using some tools that I have written in
Hi MRAB, thanks for the reply!
>
> Opening the pipe for reading will block until it's also opened for
>
> writing, and vice versa.
>
OK.
>
>
> In your bash code, 'ls' blocked until you ran 'cat', but because you
>
> ran 'ls' in the background you didn't notice it!
>
>
Right.
>
> In your
Hi Paul, first of all thanks for the help.
I am aware of the first solutions, just now I would like to experiment a bit
with using named pipes (I also know that the example is trivial, but it just
to grasp the main concepts)
>
> You can also pass a file object to p1's stdout and p2's stdin if
Hi everybody,
I am trying to understand how to use named pipes in python to launch external
processes (in a Linux environment).
As an example I am trying to "imitate" the behaviour of the following sets of
commands is bash:
> mkfifo named_pipe
> ls -lah > named_pipe &
> cat < named_pipe
In Pyt
>
> That's because stdin/stdout/stderr take file descriptors or file
>
> objects, not path strings.
>
Thanks Chris, how do I set the file descriptor to /dev/null then?
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> fd = open('/etc/file','w')
>
> fd.write('jpdas')
>
> fd.close()
>
>
Hi Bibhu, that is not a Python problem, but a permission one.
You should configure the permissions so that you have write access to the
folder.
However unless you know what you are doing it is discouraged to save your
file i
>
>
> Will it violate privacy / NDA to post the command line? Even if we
>
> can't actually replicate your system, we may be able to see something
>
> from the commands given.
>
>
Unfortunately yes..
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> Could you provide the *actual* commands you're using, rather than the generic
> "program1" and "program2" placeholders? It's *very* common for people to get
> the tokenization of a command line wrong (see the Note box in
> http://docs.python.org/2/library/subprocess.html#subprocess.Popen for s
>
> Can you please help me understanding what's the difference between the two
> cases?
>
Hi guys has some of you ideas on what is causing my issue?
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Hi everybody,
I am new to the group (and relatively new to Python)
so I am sorry if this issues has been discussed (although searching for topics
in the group I couldn't find a solution to my problem).
I am using Python 2.7.3 to analyse the output of two 3rd parties programs that
can be launche
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