I need a cross platform method of determining the MAC address of a computer at run time. For windows the 'wmi' module can be used and the only method under Linux I could find was to run ifconfig and run a regex across its output. I don't like using a package that only works on one OS, and parsing the output of another program doesn't s...
I'm running a Django site using the fastcgi interface to nginx. However, some pages are being served truncated (i.e. the page source just stops, sometimes in the middle of a tag). How do I fix this (let me know what extra information is needed, and I'll post it) Details: I'm using flup, and spawning the fastcgi server with the followin...
Coming from a C# background the naming convention for variables and method names are usually either CamelCase or Pascal Case: // C# example string thisIsMyVariable = "a" public void ThisIsMyMethod() In Python, I have seen the above but I have also seen underscores being used: # python example this_is_my_variable = 'a' def this_is_my_...
Elementree has become the accepted standard for interacting with xml. What is the prevalent web service/SOAP library in use today? ...
I've done some Python but have just now starting to use Ruby I could use a good explanation of the difference between "self" in these two languages. Obvious on first glance: Self is not a keyword in Python, but there is a "self-like" value no matter what you call it. Python methods receive self as an explicit argument, whereas Ruby do...
I went to all the documentation, also I went to the IRC channel (BTW a great community) and they told me that is not possible to create a model and limit choices in a field where the 'current user' is in a ForeignKey. I will try to explain this with an example: class Project(models.Model): name = models.CharField(max_length=100) emp...
I'm trying: import commands print commands.getoutput("ps -u 0") But it doesn't work on os x. os instead of commands gives the same output: USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND nothing more ...
This is a part algorithm-logic question (how to do it), part implementation question (how to do it best!). I'm working with Django, so I thought I'd share with that. In Python, it's worth mentioning that the problem is somewhat related to how-do-i-use-pythons-itertoolsgroupby. Suppose you're given two Django Model-derived classes: fro...
I am a member of a team that is about to launch a beta of a python (Django specifically) based web site and accompanying suite of backend tools. The team itself has doubled in size from 2 to 4 over the past few weeks and we expect continued growth for the next couple of months at least. One issue that has started to plague us is gettin...
I understand what are lambda functions in Python, but I can't find what is the meaning of "lambda binding" by searching the Python docs. A link to read about it would be great. A trivial explained example would be even better. Thank you. ...
Here's the deal. Is there a way to have strings tokenized in a line based on multiple regexes? One example: I have to get all href tags, their corresponding text and some other text based on a different regex. So I have 3 expressions and would like to tokenize the line and extract tokens of text matching every expression. I have actua...
I'm working on what I think is a pretty standard django site, but am having trouble getting my admin section to display the proper fields. Here's my models.py: class Tech(models.Model): name = models.CharField(max_length = 30) class Project(models.Model): title = models.CharField(max_length = 50) techs = models.ManyToManyF...
Hi everyone! Just a curiosity: is there an already-coded way to convert a printed traceback back to the exception that generated it? :) Or to a sys.exc_info-like structure? ...
Ant has a nice way to select groups of files, most handily using ** to indicate a directory tree. E.g. **/CVS/* # All files immediately under a CVS directory. mydir/mysubdir/** # All files recursively under mysubdir More examples can be seen here: http://ant.apache.org/manual/dirtasks.html How would you implement this i...
I have an versioned document store which I want to access through an dict like interface. Common usage is to access the latest revision (get, set, del), but one should be able to access specific revisions too (keys are always str/unicode or int). from UserDict import DictMixin class VDict(DictMixin): def __getitem__(self, key): ...
One of the really nice things about python is the simplicity with which you can name variables that have the same name as the accessor: self.__value = 1 def value(): return self.__value Is there a simple way of providing access to the private members of a class that I wish to subclass? Often I wish to simply work with the raw dat...
I'm just starting to get into Django, and of course as of last night one of the two new Python versions went final (2.6 obviously ;)) so I'm wondering if 2.6 plus Django is ready for actual use or do the Django team need more time to finish with tweaks/cleanup? All the google searches I did were inconclusive, I saw bits about some ini...
I'm already a professional J2EE developer by day, and Rails developer by night. I'm planning on adding Python to my list of skills. I'm already convinced a language is just a tool, so I'm not interested in a religious war. I agree with the Pragmatic Programmers that learning one language/year is a good thing for your professional develop...
If I open a file using urllib2, like so: remotefile = urllib2.urlopen('http://example.com/somefile.zip') Is there an easy way to get the file name other then parsing the original URL? EDIT: changed openfile to urlopen... not sure how that happened. EDIT2: I ended up using: filename = url.split('/')[-1].split('#')[0].split('?')[0] ...
If I do the following: import subprocess from cStringIO import StringIO subprocess.Popen(['grep','f'],stdout=subprocess.PIPE,stdin=StringIO('one\ntwo\nthree\nfour\nfive\nsix\n')).communicate()[0] I get: Traceback (most recent call last): File "<stdin>", line 1, in ? File "/build/toolchain/mac32/python-2.4.3/lib/python2.4/subproce...