python Programming Glossary: argumentWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python # the metaclass will automatically get passed the same argument # that you usually pass to `type` def upper_attr future_class_name.. uppercase_attr You may have noticed the extra argument upperattr_metaclass . There is nothing special about it a method.. are long for the sake of clarity but like for self all the arguments have conventional names. So a real production metaclass would..
What is the difference between @staticmethod and @classmethod in Python? http://stackoverflow.com/questions/136097/what-is-the-difference-between-staticmethod-and-classmethod-in-python The object instance a is implicitly passed as the first argument. a.foo 1 # executing foo __main__.A object at 0xb7dbef0c 1 With.. of the object instance is implicitly passed as the first argument instead of self . a.class_foo 1 # executing class_foo class.. nor cls the class is implicitly passed as the first argument. a.static_foo 1 # executing static_foo 1 foo is just a function..
http://stackoverflow.com/questions/15112125/if-x-or-y-or-z-blah expect it to do. x or y or z would evaluate to the first argument that is 'truthy' e.g. not False numeric 0 or empty see boolean.. to 2 because that is the first true like value in the arguments. Then 2 1 would be False even though y 1 would be True . share..
Differences between isinstance() and type() in python http://stackoverflow.com/questions/1549801/differences-between-isinstance-and-type-in-python solution is almost invariably duck typing try using the argument as if it was of a certain desired type do it in a try except.. statement catching all exceptions that could arise if the argument was not in fact of that type or any other type nicely duck mimicking.. it and in the except clause try something else using the argument as if it was of some other type . basestring is however quite..
The Python yield keyword explained http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained memory. And it works because Python does not care if the argument of a method is a list or not. Python expects iterables so it..
What do *args and **kwargs mean? [duplicate] http://stackoverflow.com/questions/287085/what-do-args-and-kwargs-mean documentation from what it seems it passes in a tuple of arguments. def foo hello args print hello for each in args print each.. or kwargs as the last items in your function definition 䏭 argument list allows that function to accept an arbitrary number of arguments.. list allows that function to accept an arbitrary number of arguments and or keyword arguments. For example if you wanted to write..
Dynamic module import in Python http://stackoverflow.com/questions/301134/dynamic-module-import-in-python writing a Python application that takes as a command as an argument for example python myapp.py command1 I want the application..
*args and **kwargs? [duplicate] http://stackoverflow.com/questions/3394835/args-and-kwargs args and kwargs. So far I have learned that args list of arguments as positional arguments kwargs dictionary whose keys become.. I have learned that args list of arguments as positional arguments kwargs dictionary whose keys become separate keyword arguments.. kwargs dictionary whose keys become separate keyword arguments and the values become values of these arguments. To be honest..
What does ** (double star) and * (star) do for python parameters? http://stackoverflow.com/questions/36901/what-does-double-star-and-star-do-for-python-parameters and kwargs is a common idiom to allow arbitrary number of arguments to functions as described in the section more on defining functions.. In 4 foo 1 2 3 1 2 3 The kwargs will give you all keyword arguments except for those corresponding to a formal parameter as a dictionary... 27 age 27 name one Both idioms can be mixed with normal arguments to allow a set of fixed and some variable arguments def foo..
Dynamically adding a form to a Django formset with Ajax http://stackoverflow.com/questions/501719/dynamically-adding-a-form-to-a-django-formset-with-ajax What it does cloneMore accepts selector as the first argument and the type of formset as the 2nd one. What the selector should.. want it at the end of the rest of the forms. The type argument is so that we can update the management_form field notably TOTAL_FORMS.. N being the form number starting with 0 . So with the type argument the cloneMore function looks at how many forms there currently..
Static class variables in Python http://stackoverflow.com/questions/68645/static-class-variables-in-python as the method then receives the class type as the first argument but I'm still a little fuzzy on the advantages of this approach..
How to do relative imports in Python? http://stackoverflow.com/questions/72852/how-to-do-relative-imports-in-python the module as '__main__' by passing the mod1.py as an argument to the interpreter. From PEP 328 Relative imports use a module's..
list comprehension without [ ], Python http://stackoverflow.com/questions/9060653/list-comprehension-without-python join must take an iteratable. Apparently join 's argument is str _ for _ in xrange 10 and it's a list comprehension. Look.. ''.join str _ for _ in xrange 10 '0123456789' Now join 's argument is just str _ for _ in xrange 10 no but the result is the same...
How do I use method overloading in Python? http://stackoverflow.com/questions/10202938/how-do-i-use-method-overloading-in-python same name in Python and you don't need to. See the Default Argument Values section of the Python tutorial. See Least Astonishment..
Name this python/ruby language construct (using array values to satisfy function parameters) http://stackoverflow.com/questions/1141504/name-this-python-ruby-language-construct-using-array-values-to-satisfy-function this question The Python docs call this Unpacking Argument Lists . It's a pretty handy feature. In Python you can also..
Pygame (Python) - TypeError: Argument must be rect style object [closed] http://stackoverflow.com/questions/14305083/pygame-python-typeerror-argument-must-be-rect-style-object Python TypeError Argument must be rect style object closed This is quite frustrating.. line 139 in module if ballrect.colliderect x TypeError Argument must be rect style object python pygame typeerror share improve..
Why does x,y = zip(*zip(a,b)) work in Python? http://stackoverflow.com/questions/2511300/why-does-x-y-zipzipa-b-work-in-python
http://stackoverflow.com/questions/277922/python-argument-binders Argument Binders How can I bind arguments to a Python method to store..
Python: Once and for all. What does the Star operator mean in Python? [duplicate] http://stackoverflow.com/questions/2921847/python-once-and-for-all-what-does-the-star-operator-mean-in-python as s sum 1 2 10 15 Also see section 4.7.4 Unpacking Argument Lists of the Python documentation. Additionally you can define..
How to check arguments of the function? http://stackoverflow.com/questions/3247833/how-to-check-arguments-of-the-function a lot of functions requiring exactly this kind of checks Argument name introspection while feasible thanks to module inspect is..
Python function local name binding from an outer scope http://stackoverflow.com/questions/3908335/python-function-local-name-binding-from-an-outer-scope # Old globals co_argcount code_obj.co_argcount # Argument count co_code code_obj.co_code # The actual bytecode as a string..
Executing “SELECT … WHERE … IN …” using MySQLdb http://stackoverflow.com/questions/4574609/executing-select-where-in-using-mysqldb Unix socket var run mysqld mysqld.sock Time Id Command Argument 110101 11 45 41 1 Connect unutbu@localhost on test 1 Query set..
How to close a socket left open by a killed program? http://stackoverflow.com/questions/5875177/how-to-close-a-socket-left-open-by-a-killed-program not possible to bind to this port for any local address. Argument is an integer boolean flag. python linux sockets networking..
Default values for arguments [duplicate] http://stackoverflow.com/questions/6938655/default-values-for-arguments Least Astonishment&rdquo in Python The Mutable Default Argument Consider the following function def foo L L.append 1 print L..
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