python Programming Glossary: thingPython subprocess readlines() hangs http://stackoverflow.com/questions/12419198/python-subprocess-readlines-hangs print out the output. NOTE I don't want to print out everything at once main.py from subprocess import Popen PIPE STDOUT import.. solve the problem. I'm not that into the whole subprocess thing so please give me a more hands on concrete answer. Regards edit.. on concrete answer. Regards edit Fix unintended code. nothing to do with the actual error python subprocess share improve..
How do I modify a text file in Python? http://stackoverflow.com/questions/125703/how-do-i-modify-a-text-file-in-python you'll have to rewrite it. This is an operating system thing not a Python thing. It is the same in all languages. What I.. rewrite it. This is an operating system thing not a Python thing. It is the same in all languages. What I usually do is read.. write it out to a new file called myfile.txt.tmp or something like that. This is better than reading the whole file into memory..
Get last n lines of a file with Python, similar to tail http://stackoverflow.com/questions/136168/get-last-n-lines-of-a-file-with-python-similar-to-tail line length when as a practical matter you can never know things like that. Generally this will locate the last 20 lines on.. or second pass through the loop. If your 74 character thing is actually accurate you make the block size 2048 and you'll..
http://stackoverflow.com/questions/1396668/python-get-object-by-id an id of a Python object which I retrieved by doing id thing . How do I find thing again by the id number I was given python.. object which I retrieved by doing id thing . How do I find thing again by the id number I was given python share improve this..
Difference between __str__ and __repr__ in Python http://stackoverflow.com/questions/1436703/difference-between-str-and-repr-in-python repr so code like that can just work. This is why the 𩃀val thing comes up if you have enough information so eval repr c c that.. information so eval repr c c that means you know everything there is to know about c . If that 䏭 easy enough at least in.. arguments but it is a useful form to express 𦭛his is everything you need to know about this instance Note I used r above not..
Differences between isinstance() and type() in python http://stackoverflow.com/questions/1549801/differences-between-isinstance-and-type-in-python Using type import types if type a is types.DictType do_something if type b in types.StringTypes do_something_else Using isinstance.. do_something if type b in types.StringTypes do_something_else Using isinstance if isinstance a dict do_something if isinstance.. Using isinstance if isinstance a dict do_something if isinstance b str or isinstance b unicode do_something_else..
How to get current CPU and RAM usage in Python? http://stackoverflow.com/questions/276052/how-to-get-current-cpu-and-ram-usage-in-python developed and not supported on multiple platform or something like pystatgrab again no activity since 2007 it seems and no.. a well supported multi platform way of doing the same thing python system cpu status ram share improve this question..
Can I run a Python script as a service (in Windows)? How? http://stackoverflow.com/questions/32404/can-i-run-a-python-script-as-a-service-in-windows-how are quite comprehensive. I would like to know one more thing How is Windows aware of my service Can I manage it with the..
*args and **kwargs? [duplicate] http://stackoverflow.com/questions/3394835/args-and-kwargs of arguments to your function. For example def print_everything args for count thing in enumerate args ... print ' 0 . 1 '.format.. function. For example def print_everything args for count thing in enumerate args ... print ' 0 . 1 '.format count thing ..... thing in enumerate args ... print ' 0 . 1 '.format count thing ... print_everything 'apple' 'banana' 'cabbage' 0. apple 1...
Python UnicodeDecodeError - Am I misunderstanding encode? http://stackoverflow.com/questions/368805/python-unicodedecodeerror-am-i-misunderstanding-encode isn't working I really thought 'ignore' would do the right thing. 'add x93Monitoring x93 to list '.encode 'latin 1' 'ignore'.. and encoded strings can be decoded to Unicode. The thing is Unicode came quite late so all of us that grew up using an.. like the zip or rot13 or base64 ones which have nothing to do with Unicode. Anyway all you have to remember for your..
Python code to pick out all possible combinations from a list? http://stackoverflow.com/questions/464864/python-code-to-pick-out-all-possible-combinations-from-a-list a feeling there must be a more elegant solution. The only thing that occurs to me would be to just loop through the decimal..
Python string formatting: % vs. .format http://stackoverflow.com/questions/5082452/python-string-formatting-vs-format re use arguments which you can't do with . An annoying thing about is also how it can either take a variable or a tuple...
How do I duplicate sys.stdout to a log file in python? http://stackoverflow.com/questions/616645/how-do-i-duplicate-sys-stdout-to-a-log-file-in-python appears that there's either no solution or I'm doing something so non standard that nobody knows I'll revise my question to.. call output . To clarify To redirect all output I do something like this and it works great # open our log file so se open.. os.dup2 se.fileno sys.stderr.fileno The nice thing about this is that it requires no special print calls from the..
Recommendations of Python REST (web services) framework? [closed] http://stackoverflow.com/questions/713847/recommendations-of-python-rest-web-services-framework rest frameworks share improve this question Something to be careful about when designing a RESTful API is the conflation.. is the conflation of GET and POST as if they were the same thing. It's easy to make this mistake with Django 's function based..
http://stackoverflow.com/questions/890128/python-lambda-why about lambda functions Like f lambda x x 2 2 x 5 Those things are actually quite useful. Python supports a style of programming.. 9 Of course in this particular case you could do the same thing as a list comprehension mult3 x for x in 1 2 3 4 5 6 7 8 9 if.. and a lambda function may be the shortest way to write something out. Like def transform n return lambda x x n f transform 3..
list comprehension without [ ], Python http://stackoverflow.com/questions/9060653/list-comprehension-without-python comprehension without Python Here is the thing join a list ''.join str _ for _ in xrange 10 '0123456789' join..
http://stackoverflow.com/questions/1070999/writing-a-website-in-python Hello World print body html if __name__ __main__ main Thing is that this seems pretty cumbersome. Without using something..
Python multiprocessing global variable updates not returned to parent http://stackoverflow.com/questions/11055303/python-multiprocessing-global-variable-updates-not-returned-to-parent confirms it import multiprocessing import pickle class Thing object def __getstate__ self print 'got pickled' return self.__dict__.. p multiprocessing.Process target q.put args Thing p.start print q.get p.join Output python mp.py got pickled got.. Output python mp.py got pickled got unpickled __main__.Thing object at 0x10056b350 The one approach that might work for you..
Set Django IntegerField by choices=… name http://stackoverflow.com/questions/1117564/set-django-integerfield-by-choices-name name instead of the value Consider this model class Thing models.Model PRIORITIES 0 'Low' 1 'Normal' 2 'High' priority.. default 0 choices PRIORITIES At some point we have a Thing instance and we want to set its priority. Obviously you could.. workaround thing.priority dict key value for value key in Thing.PRIORITIES 'Normal' but that's clunky. Given how common this..
Why does Python pep-8 strongly recommend spaces over tabs for indentation? http://stackoverflow.com/questions/120926/why-does-python-pep-8-strongly-recommend-spaces-over-tabs-for-indentation I hope we can agree that this is universally a Good Thing . Since the decision between spaces and tabs for an individual..
Does performance differs between Python or C++ coding of OpenCV? http://stackoverflow.com/questions/13432800/does-performance-differs-between-python-or-c-coding-of-opencv functions correctly you will get a very high speed code. Thing to remember is always try to avoid loops and iterations in Python...
Why doesn't this loop display an updated object count every five seconds? http://stackoverflow.com/questions/2221247/why-doesnt-this-loop-display-an-updated-object-count-every-five-seconds seconds I use this python code to output the number of Things every 5 seconds def my_count while True print Number of Things.. every 5 seconds def my_count while True print Number of Things d Thing.objects.count time.sleep 5 my_count If another process.. 5 seconds def my_count while True print Number of Things d Thing.objects.count time.sleep 5 my_count If another process generates..
Vim automatically removes indentation on Python comments http://stackoverflow.com/questions/2360249/vim-automatically-removes-indentation-on-python-comments type # it unindents automatically def foo # comment class Thing def __init__ self pass # comment line gets unindented all the..
OSX : Defining a new URL handler that points straight at a Python script http://stackoverflow.com/questions/2418910/osx-defining-a-new-url-handler-that-points-straight-at-a-python-script key array dict key CFBundleURLName key string Do My Thing string key CFBundleURLSchemes key array string dmt string array..
How to prevent a function from being overridden in python http://stackoverflow.com/questions/2425656/how-to-prevent-a-function-from-being-overridden-in-python completely goes against how Java thinks of objects. class Thing object x 1 something Thing something.y something.x If you really.. Java thinks of objects. class Thing object x 1 something Thing something.y something.x If you really want it you can try the..
Creating a method that is simultaneously an instance and class method http://stackoverflow.com/questions/2589690/creating-a-method-that-is-simultaneously-an-instance-and-class-method set of serializable objects and types. As an example class Thing object #... Thing.to_json 'A' Thing .to_json 'B' I know that.. objects and types. As an example class Thing object #... Thing.to_json 'A' Thing .to_json 'B' I know that given the definition.. As an example class Thing object #... Thing.to_json 'A' Thing .to_json 'B' I know that given the definition of classmethod..
http://stackoverflow.com/questions/2687724/copy-an-entity-in-google-app-engine-datastore-in-python-without-knowing-property when I write the code. My thinking was to do this #theThing a particular entity we pull from the datastore with model Thing.. a particular entity we pull from the datastore with model Thing copyThing Thing user user for thingProperty in theThing.properties.. entity we pull from the datastore with model Thing copyThing Thing user user for thingProperty in theThing.properties copyThing.__setattr__..
How does Python's “super” do the right thing? http://stackoverflow.com/questions/607186/how-does-pythons-super-do-the-right-thing an object of the derived most class Python does the Right Thing TM . It calls the constructor for the derived most class then..
Customize/remove Django select box blank option http://stackoverflow.com/questions/739260/customize-remove-django-select-box-blank-option Django's code here and here I believe it should work class ThingForm models.ModelForm class Meta model Thing def __init__ self.. work class ThingForm models.ModelForm class Meta model Thing def __init__ self args kwargs super ThingForm self .__init__.. class Meta model Thing def __init__ self args kwargs super ThingForm self .__init__ args kwargs self.fields 'verb' .empty_label..
Why NumPy instead of Python lists? http://stackoverflow.com/questions/993984/why-numpy-instead-of-python-lists to Python lists for performance and scalability reasons. Thing is I know Python lists and they seem to work for me. Is the..
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