python Programming Glossary: thingsWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python Python creates this object automatically. But as with most things in Python it gives you a way to do it manually. Remember the.. They can be different but there is no reason to complicate things. type accepts a dictionary to define the attributes of the class...
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 the..
The Python yield keyword explained http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained 100 100 100 100 100 100 ... It can be useful for various things like controlling access to a resource. Itertools your best friend..
http://stackoverflow.com/questions/2709821/python-self-explained yet more different but it didn't. Python's all for making things explicit making it obvious what's what and although it doesn't..
Suggestions for a Cron like scheduler in Python? http://stackoverflow.com/questions/373335/suggestions-for-a-cron-like-scheduler-in-python datetime.now t time.sleep t datetime.now .seconds A few things to note Python's weekdays months are zero indexed unlike cron..
Non-blocking read on a subprocess.PIPE in python http://stackoverflow.com/questions/375427/non-blocking-read-on-a-subprocess-pipe-in-python True # thread dies with the program t.start # ... do other things here # read line without blocking try line q.get_nowait # or..
http://stackoverflow.com/questions/4015417/python-class-inherits-object have a different object model to classic objects and some things won't work properly with old style objects for instance super..
How do I unload (reload) a Python module? http://stackoverflow.com/questions/437589/how-do-i-unload-reload-a-python-module reload builtin function import foo while True # Do some things. if is_changed foo foo reload foo I think that this is what..
How do you create a daemon in Python? http://stackoverflow.com/questions/473620/how-do-you-create-a-daemon-in-python explain how to create the daemon. Are there any additional things that need to be considered Is one sample better than the other..
Convert XML/HTML Entities into Unicode String in Python http://stackoverflow.com/questions/57708/convert-xml-html-entities-into-unicode-string-in-python developer Fredrik Lundh author of elementtree among other things has such a function on his website which works with decimal..
Python __init__ and self what do they do? http://stackoverflow.com/questions/625083/python-init-and-self-what-do-they-do Python programming language and I've come across certain things I don't fully understand. I'm coming from a C background but..
What is the best way to implement nested dictionaries in Python? http://stackoverflow.com/questions/635483/what-is-the-best-way-to-implement-nested-dictionaries-in-python and natural but it is more syntactically painful to do things like aggregations and looking at subsets of the dictionary e.g...
Good Python modules for fuzzy string comparison? http://stackoverflow.com/questions/682367/good-python-modules-for-fuzzy-string-comparison as well as longest similar string matches among other things. Basically I'm hoping to find something that is simple enough..
Why do you need explicitly have the “self” argument into a Python method? http://stackoverflow.com/questions/68282/why-do-you-need-explicitly-have-the-self-argument-into-a-python-method need it and sometimes don't. Python elects to make things like this explicit rather than based on a rule. Additionally..
http://stackoverflow.com/questions/7933596/django-dynamic-model-fields will need to replace ManyToMany with ListField among other things. Checkout this Django MongoDB example from djangotoolbox.fields..
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..
Simple Digit Recognition OCR in OpenCV-Python http://stackoverflow.com/questions/9413216/simple-digit-recognition-ocr-in-opencv-python training i made a small code in OpenCV. It does following things a It loads the image. b Selects the digits obviously by contour..
Python: How do I pass a variable by reference? http://stackoverflow.com/questions/986006/python-how-do-i-pass-a-variable-by-reference to change where outer_string pointed. I hope this clears things up a little. EDIT It's been noted that this doesn't answer the.. could return the new value. This doesn't change the way things are passed in but does let you get the information you want..
NumPy or Pandas: Keeping array type as integer while having a NaN value http://stackoverflow.com/questions/11548005/numpy-or-pandas-keeping-array-type-as-integer-while-having-a-nan-value this a DataFrame but we'd really like to be int . Thoughts Things tried I tried using the from_records function under pandas.DataFrame..
To make a plan for my first MySQL project http://stackoverflow.com/questions/1168701/to-make-a-plan-for-my-first-mysql-project backend I'd recommend using it for the frontend as well. Things about which you are uncertain The users can be specified in..
How should I understand the output of dis.dis? http://stackoverflow.com/questions/12673074/how-should-i-understand-the-output-of-dis-dis output based on misinterpreting source code as byte code. Things are different in Python 3 where dis.dis compiles a string argument..
After C++ - Python or Java? [closed] http://stackoverflow.com/questions/136977/after-c-python-or-java a better library. Python makes it very easy to just Get Things Done. Yes there is a performance penalty for interpreted languages..
Is switching from PHP to Python worth the trouble [closed] http://stackoverflow.com/questions/1486608/is-switching-from-php-to-python-worth-the-trouble and the standard library may take some while though. Things you should be aware of There are no Interfaces in pure Python...
Using pandas DataFrame with incoming real time data http://stackoverflow.com/questions/16740887/using-pandas-dataframe-with-incoming-real-time-data can lead to performance issues with all that copying. Things I've tried A few people suggested preallocating a big DataFrame..
Error setting up Mercurial on Windows Server 2008 http://stackoverflow.com/questions/2123798/error-setting-up-mercurial-on-windows-server-2008 a flaw and does not return a complete set of HTTP headers. Things you can try Check the event logs on the system to see whether..
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.. and restart it it will display the new Thing count. Things are stored in a MYSQL innodb database and this code runs on..
http://stackoverflow.com/questions/2283034/python-for-a-perl-programmer Python questions on Stack Overflow. In particular Python Things one MUST avoid and Python 2.x gotcha 䏭 and landmines are well..
http://stackoverflow.com/questions/2771904/usage-of-python-3-super argument 0 given super B B .m B m See Michele Simionato's Things to Know About Python Super blog posts series 1 2 3 for more..
Having a console in a single-threaded Python script http://stackoverflow.com/questions/4241234/having-a-console-in-a-single-threaded-python-script to your situation as long as you trust the input source. Things get 'interesting' when someone types while True continue But..
How to see exception generated into django template variable? http://stackoverflow.com/questions/4305948/how-to-see-exception-generated-into-django-template-variable
Reversing a regular expression in python http://stackoverflow.com/questions/492716/reversing-a-regular-expression-in-python I only want one string that will match the regex. Things like . or . would make an infinite amount of strings match the..
Try/catch or validation for speed? http://stackoverflow.com/questions/5589532/try-catch-or-validation-for-speed If yes then EAFP is always faster and should be used. Things get more interesting if the answer is no . In that case which..
memory-efficient built-in SqlAlchemy iterator/generator? http://stackoverflow.com/questions/7389759/memory-efficient-built-in-sqlalchemy-iterator-generator sized chunks of the dataset for thing in session.query Things analyze thing To avoid this I find I have to build my own iterator..
http://stackoverflow.com/questions/8692/how-to-use-xpath-in-python Downsides include Compliance to the spec . It's strict. Things like default namespace handling are easier in other libraries...
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