¡@
python Programming Glossary: atWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python is a metaclass in Python I've mastered almost all the Python.. do with introspection but it's still unclear to me. So what are metaclasses What do you use them for Concrete examples including.. but it's still unclear to me. So what are metaclasses What do you use them for Concrete examples including snippets much..
The Python yield keyword explained http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained Python yield keyword explained What is the use of the yield keyword in Python What does it do For.. What is the use of the yield keyword in Python What does it do For example I'm trying to understand this code def.. trying to understand this code def node._get_child_candidates self distance min_dist max_dist if self._leftchild and distance..
http://stackoverflow.com/questions/2709821/python-self-explained 'self' explained What is the purpose of the self word in Python I understand it refers.. in Python I understand it refers to the specific object created from that class but I can't see why it explicitly needs to.. understand it refers to the specific object created from that class but I can't see why it explicitly needs to be added to..
Flattening a shallow list in Python http://stackoverflow.com/questions/406121/flattening-a-shallow-list-in-python a shallow list in Python On a Django project I was hoping.. list in Python On a Django project I was hoping to flatten a shallow list with a nested list comprehension like this.. Stack Overflow I got the desired results with a reduce statement reduce list.__add__ map lambda x list x mi.image_set.all..
Calling an external command in Python http://stackoverflow.com/questions/89228/calling-an-external-command-in-python command external share improve this question Look at the subprocess module in the stdlib from subprocess import call.. call call ls l The advantage of subprocess vs system is that it is more flexible you can get the stdout stderr the real status.. is more flexible you can get the stdout stderr the real status code better error handling etc... . I think os.system is deprecated..
Making a flat list out of list of lists in Python [duplicate] http://stackoverflow.com/questions/952914/making-a-flat-list-out-of-list-of-lists-in-python a flat list out of list of lists in Python duplicate Possible Duplicates.. a flat list out of list of lists in Python duplicate Possible Duplicates Flattening a shallow list in Python Comprehension.. out of list of lists in Python duplicate Possible Duplicates Flattening a shallow list in Python Comprehension for flattening..
Python: How do I pass a variable by reference? http://stackoverflow.com/questions/986006/python-how-do-i-pass-a-variable-by-reference How do I pass a variable by reference The Python documentation seems unclear about whether parameters are passed by reference.. to a variable but the reference is passed by value some data types are mutable but others aren't So If you pass a mutable.. object into a method the method gets a reference to that same object and you can mutate it to your heart's delight but..
Special (magic) methods in Python [closed] http://stackoverflow.com/questions/1090620/special-magic-methods-in-python be a good idea. python share improve this question At the python level most of them are documented in the language.. most of them are documented in the language reference . At the C level you can find it under the object protocol section..
Which Python memory profiler is recommended? [closed] http://stackoverflow.com/questions/110259/which-python-memory-profiler-is-recommended improve this question Heapy is quite simple to use. At some point in your code you have to write the following from..
Showing the stack trace from a running Python application http://stackoverflow.com/questions/132058/showing-the-stack-trace-from-a-running-python-application site.py to have all python programs use it and let it run. At any point send the process a SIGUSR1 signal using kill or in..
“Large data” work flows using pandas http://stackoverflow.com/questions/14262433/large-data-work-flows-using-pandas explain the relationship between my data and some outcome. At the very end of this process I apply some learning techniques..
Which programming languages can I use on Android Dalvik? http://stackoverflow.com/questions/1994703/which-programming-languages-can-i-use-on-android-dalvik android scala dalvik share improve this question At launch Java was the only officially supported programming language..
Why do attribute references act like this with Python inheritance? http://stackoverflow.com/questions/206734/why-do-attribute-references-act-like-this-with-python-inheritance instance the class object is checked for the attribute. At class definition time you can run arbritrary code like this..
What does plus equals (+=) do in Python? http://stackoverflow.com/questions/2347265/what-does-plus-equals-do-in-python code to demonstrate what she thinks is wrong with Python. At the moment I have to agree with her. All of the experienced..
How are Python's Built In Dictionaries Implemented http://stackoverflow.com/questions/327311/how-are-pythons-built-in-dictionaries-implemented
http://stackoverflow.com/questions/3455456/what-kinds-of-patterns-could-i-enforce-on-the-code-to-make-it-easier-to-translat until you try to wrestle it into doing something else. At that point you find out the machinery is wired to do what it.. don't understand. That takes a huge amount of effort. At the million line level this is simply impossible in practice...
Weighted random selection with and without replacement http://stackoverflow.com/questions/352670/weighted-random-selection-with-and-without-replacement p8 with a 0 b 0.15 c 0.2 d 0.2 e 0.2 left to be assigned At runtime Get a U 0 1 random number say binary 0.001100000 bitshift..
Using Django time/date widgets in custom form http://stackoverflow.com/questions/38601/using-django-time-date-widgets-in-custom-form to help the widgets find their media load adminmedia At the top of the template. In the head section of the template...
Python list comprehension rebind names even after scope of comprehension. Is this right? http://stackoverflow.com/questions/4198906/python-list-comprehension-rebind-names-even-after-scope-of-comprehension-is-thi uid in the list so the error only shows # up when len 1 At the risk of whining this is a brutal source of errors. As I..
Does python have an equivalent to Java Class.forName()? http://stackoverflow.com/questions/452969/does-python-have-an-equivalent-to-java-class-forname in this loop for comp in parts 1 m getattr m comp At the end of the loop m will be a reference to the class. This..
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 want to do the same except duplicate instead of redirect. At first blush I thought that simply reversing the dup2's should..
Python @property versus getters and setters http://stackoverflow.com/questions/6618002/python-property-versus-getters-and-setters for production without changing the code that uses it. At the same time you don't have to write getters and setters for..
http://stackoverflow.com/questions/7933596/django-dynamic-model-fields has some thriving forks This solution is based on Entity Attribute Value data model essentially it uses several tables to.. eav.register Patient Nicely integrates with Django admin At the same time being really powerful. Downsides Not very efficient... Encounter eav.register Encounter eav.register Patient Attribute.objects.create name 'age' datatype Attribute.TYPE_INT..
How to get line count cheaply in Python? http://stackoverflow.com/questions/845058/how-to-get-line-count-cheaply-in-python What is the most efficient way both memory and time wise At the moment I do def file_len fname with open fname as f for..
Simple Digit Recognition OCR in OpenCV-Python http://stackoverflow.com/questions/9413216/simple-digit-recognition-ocr-in-opencv-python . e Then save both the arrays in seperate txt files. At the end of manual classification of digits image will look like..
Pyparsing: extract variable length, variable content, variable whitespace substring http://stackoverflow.com/questions/10855951/pyparsing-extract-variable-length-variable-content-variable-whitespace-substr I don't want 01 01 11 S11 55555 20 444 55 6666 A. PROSTATE AND SEMINAL VESICLES PROSTATECTOMY ADENOCARCINOMA. .. 55555 20 444 55 6666 A. PROSTATE AND SEMINAL VESICLES PROSTATECTOMY ADENOCARCINOMA. TOTAL GLEASON SCORE GLEASON 5.. TOTAL GLEASON SCORE GLEASON 5 4 9 TUMOR LOCATION BILATERAL TUMOR QUANTITATION 15 OF PROSTATE INVOLVED..
Linux: Pipe into Python (ncurses) script, stdin and termios http://stackoverflow.com/questions/3999114/linux-pipe-into-python-ncurses-script-stdin-and-termios blabla HERE at end before curses TYPING blabla HERE # # AT THIS POINT # in this case curses window is shown with the text.. blabla HERE at end before curses TYPING blabla HERE # # AT THIS POINT # script simply exits nothing is shown # ################..
What are the best Python Finite State Machine implementations http://stackoverflow.com/questions/5492980/what-are-the-best-python-finite-state-machine-implementations Code ... suited for text parsing tasks GOF State Pattern AT T's Weighted FSM in python Python FSM for SO Code Golf I need..
http://stackoverflow.com/questions/576940/how-do-i-design-sms-service
Reading file string into an array (In a pythonic way) http://stackoverflow.com/questions/6213336/reading-file-string-into-an-array-in-a-pythonic-way to hate you you can make a one liner NOT PYTHONIC AT ALL arrays np.array array.float i for i in r for r in csv.reader..
Full examples of using Pyserial package http://stackoverflow.com/questions/676172/full-examples-of-using-pyserial-package i have the package and am wondering how to send the AT commands and read them back python modem pyserial share improve..
Can't subtract offset-naive and offset-aware datetimes http://stackoverflow.com/questions/796008/cant-subtract-offset-naive-and-offset-aware-datetimes unaware timestamps in PG and always insert using NOW AT TIME ZONE 'UTC' That way all my timestamps are UTC by default..
|