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python Programming Glossary: whereWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python True my_foo FooChild my_foo.echo_bar True You see where we are going in Python classes are objects and you can create.. when it's created. You usually do this for APIs where you want to create classes matching the current context. Imagine.. matching the current context. Imagine a stupid example where you decide that all classes in your module should have their..
Which Python memory profiler is recommended? [closed] http://stackoverflow.com/questions/110259/which-python-memory-profiler-is-recommended 9 4189288 50 dict no owner You can also find out from where objects are referenced and get statistics about that but somehow..
http://stackoverflow.com/questions/1191374/subprocess-with-timeout Process started Terminating process Thread finished 15 where it can be seen that in the first execution the process finished..
The meaning of a single- and a double-underscore before an object name in Python http://stackoverflow.com/questions/1301346/the-meaning-of-a-single-and-a-double-underscore-before-an-object-name-in-python underscore is textually replaced with _classname__spam where classname is the current class name with leading underscore..
Why does comparing strings in Python using either '==' or 'is' sometimes produce a different result? http://stackoverflow.com/questions/1504717/why-does-comparing-strings-in-python-using-either-or-is-sometimes-produce produce a different result I've got a python program where two variables are set to the value 'public' . In a conditional..
A Transpose/Unzip Function in Python (inverse of zip) http://stackoverflow.com/questions/19339/a-transpose-unzip-function-in-python-inverse-of-zip of 2 item tuples and I'd like to convert them to 2 lists where the first contains the first item in each tuple and the second..
What's the best SOAP client library for Python, and where is the documentation for it? [closed] http://stackoverflow.com/questions/206154/whats-the-best-soap-client-library-for-python-and-where-is-the-documentation-f the best SOAP client library for Python and where is the documentation for it closed I've never used SOAP before..
An executable Python app [closed] http://stackoverflow.com/questions/2933/an-executable-python-app Mac Windows and Linux. The problem being I have no idea where to start or how to write a GUI with it can anybody shed some..
What does `if __name__ == “__main__”:` do? http://stackoverflow.com/questions/419163/what-does-if-name-main-do doing this is that sometimes you write a module a .py file where it can be executed directly. Alternatively it can also be imported..
How do I unload (reload) a Python module? http://stackoverflow.com/questions/437589/how-do-i-unload-reload-a-python-module to the new objects and must be updated in each namespace where they occur if that is desired. As you noted in your question..
Why is python ordering my dictionary like so? http://stackoverflow.com/questions/526125/why-is-python-ordering-my-dictionary-like-so in fact the Python documentation states this outright where the order of elements is well defined but not immediately obvious...
Understanding Python super() and init methods http://stackoverflow.com/questions/576169/understanding-python-super-and-init-methods But the main advantage comes with multiple inheritance where all sorts of fun stuff can happen. See the standard docs on..
How can you profile a Python script? http://stackoverflow.com/questions/582336/how-can-you-profile-a-python-script times each function was called making it easy to determine where you should make optimizations. You can call it from within your..
What's the difference between list and tuples in Python? http://stackoverflow.com/questions/626759/whats-the-difference-between-list-and-tuples-in-python new location. On the other hand there might be situations where it makes perfect sense to correct just the line number without..
Static class variables in Python http://stackoverflow.com/questions/68645/static-class-variables-in-python is different from C and Java but not so different from C# where a static member can't be accessed using a reference to an instance...
How to do relative imports in Python? http://stackoverflow.com/questions/72852/how-to-do-relative-imports-in-python as if the module were a top level module regardless of where the module is actually located on the file system. In Python..
Python: How do I pass a variable by reference? http://stackoverflow.com/questions/986006/python-how-do-i-pass-a-variable-by-reference point to a new list but there was no way to change where outer_list pointed. String an immutable type It's immutable.. point to a new list but there was no way to change where outer_string pointed. I hope this clears things up a little...
What limitations have closures in Python compared to language X closures? http://stackoverflow.com/questions/141642/what-limitations-have-closures-in-python-compared-to-language-x-closures have closures in Python compared to language X closures Where X is any programming language C# Javascript Lisp Perl Ruby Scheme..
What is the best way to get all the divisors of a number? http://stackoverflow.com/questions/171765/what-is-the-best-way-to-get-all-the-divisors-of-a-number ^ 1 ... ... ... ... prime2 ^ i prime2 ^ j ... primeN ^ k Where i j and k are the multiplicity of the prime factor. Given n..
What is the best project structure for a Python application? http://stackoverflow.com/questions/193161/what-is-the-best-project-structure-for-a-python-application and easy generation of install packages. In particular Where do you put the source Where do you put application startup scripts.. packages. In particular Where do you put the source Where do you put application startup scripts Where do you put the.. the source Where do you put application startup scripts Where do you put the IDE project cruft Where do you put the unit acceptance..
http://stackoverflow.com/questions/2073235/random-weighted-choice 1 0.2 701 2 0.3 701 3 0.5 702 1 0.2 702 2 0.3 703 3 0.5 Where 701 1 0.2 id1 id2 priority Is where pretty way to choice id2..
Flatten (an irregular) list of lists in Python http://stackoverflow.com/questions/2158395/flatten-an-irregular-list-of-lists-in-python except for one fail on a list like this L 1 2 3 4 5 6 Where the desired output is 1 2 3 4 5 6 Or perhaps even better an..
Where to put Django startup code? http://stackoverflow.com/questions/2781383/where-to-put-django-startup-code to put Django startup code I'd like to have these lines of..
Short Description of Python Scoping Rules http://stackoverflow.com/questions/291978/short-description-of-python-scoping-rules class Foo code2 def spam..... code3 for code4.. code5 x Where is x found Some possible choices include the list above In the..
If Python is interpreted, what are .pyc files? http://stackoverflow.com/questions/2998215/if-python-is-interpreted-what-are-pyc-files files which Windows identifies as Compiled Python Files . Where do these come in python compiled interpreted pyc share improve..
Can I install Python windows packages into virtualenvs? http://stackoverflow.com/questions/3271590/can-i-install-python-windows-packages-into-virtualenvs I discovered this after reading answers to my question Where can I download binary eggs with psycopg2 for Windows share..
How are Python's Built In Dictionaries Implemented http://stackoverflow.com/questions/327311/how-are-pythons-built-in-dictionaries-implemented hash of the key. CPython uses initial i hash key mask . Where mask PyDictMINSIZE 1 but that's not really important . Just..
Regular expression to extract URL from an HTML link http://stackoverflow.com/questions/499345/regular-expression-to-extract-url-from-an-html-link re urls re.findall r'href ' ^ ' ' s print ' '.join urls Where s is the string that you're looking for matches in. Quick explanation..
Where do the Python unit tests go? http://stackoverflow.com/questions/61151/where-do-the-python-unit-tests-go do the Python unit tests go If you're writing a library or..
Django Passing Custom Form Parameters to Formset http://stackoverflow.com/questions/622982/django-passing-custom-form-parameters-to-formset like this form ServiceForm affiliate request.affiliate Where request.affiliate is the logged in user. This works as intended...
Python mysqldb: Library not loaded: libmysqlclient.18.dylib http://stackoverflow.com/questions/6383310/python-mysqldb-library-not-loaded-libmysqlclient-18-dylib I need to tell my pydev eclipse version where to find it. Where do I set this python mysql python share improve this question..
How do I include image files in Django templates? http://stackoverflow.com/questions/901551/how-do-i-include-image-files-in-django-templates that needs to be displayed in the header of each Web page. Where should I store the file Which path should I use for the tag..
Using a WHERE ___ IN ___ statement http://stackoverflow.com/questions/14245396/using-a-where-in-statement a WHERE ___ IN ___ statement I'm trying to figure out how to properly.. statement I'm trying to figure out how to properly use a WHERE _ IN _ statement Definition c.execute '''CREATE TABLE IF NOT.. this list_of_vars 'foo' 'bar' statement SELECT FROM tab WHERE obj IN c.execute statement ' ' ' .join list_of_vars ' Alternatively..
Parameterized queries with psycopg2 / Python DB-API and PostgreSQL http://stackoverflow.com/questions/1466741/parameterized-queries-with-psycopg2-python-db-api-and-postgresql should be safe and work cursor.execute SELECT FROM student WHERE last_name lname s lname Robert' DROP TABLE students share..
Escape SQL “LIKE” value for Postgres with psycopg2 http://stackoverflow.com/questions/2106207/escape-sql-like-value-for-postgres-with-psycopg2 20 of all so I want to write something like this sql '... WHERE ... LIKE myvalue s' cursor.fetchall sql 'myvalue' escape_sql_like.. .replace ' ' ' ' .replace '_' ' _' sql SELECT FROM things WHERE description LIKE like s ESCAPE ' ' cursor.execute sql dict like..
python list in sql query as parameter http://stackoverflow.com/questions/283645/python-list-in-sql-query-as-parameter for unused in l query 'SELECT name FROM students WHERE id IN s ' placeholders cursor.execute query l share improve..
imploding a list for use in a python MySQLDB IN clause http://stackoverflow.com/questions/589284/imploding-a-list-for-use-in-a-python-mysqldb-in-clause into an IN clause cursor.execute DELETE FROM foo.bar WHERE baz IN ' s' foostring What I need is to accomplish the same.. ' s' len list_of_ids cursor.execute DELETE FROM foo.bar WHERE baz IN s format_strings tuple list_of_ids That way you avoid..
Complex foreign key constraint in SQLAlchemy http://stackoverflow.com/questions/8394177/complex-foreign-key-constraint-in-sqlalchemy option is allowed UPDATE systemvariables SET choice_id 2 WHERE variable_id 1 UPDATE systemvariables SET choice_id 5 WHERE variable_id.. WHERE variable_id 1 UPDATE systemvariables SET choice_id 5 WHERE variable_id 2 UPDATE systemvariables SET choice_id 6 WHERE variable_id.. WHERE variable_id 2 UPDATE systemvariables SET choice_id 6 WHERE variable_id 3 But there is no getting out of line UPDATE systemvariables..
Total memory used by Python process? http://stackoverflow.com/questions/938733/total-memory-used-by-python-process SELECT WorkingSet FROM Win32_PerfRawData_PerfProc_Process WHERE IDProcess d os.getpid return int result 0 'WorkingSet' On Linux..
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