python Programming Glossary: catLocal variables in Python nested functions http://stackoverflow.com/questions/12423614/local-variables-in-python-nested-functions do_the_petting def get_petters for animal in 'cow' 'dog' 'cat' cage Cage animal def pet_function print Mary pets the cage.animal.. for name f in funs print name f Gives cow Mary pets the cat. dog Mary pets the cat. cat Mary pets the cat. So basically.. name f Gives cow Mary pets the cat. dog Mary pets the cat. cat Mary pets the cat. So basically why am I not getting three..
*args and **kwargs? [duplicate] http://stackoverflow.com/questions/3394835/args-and-kwargs args and kwargs duplicate This question already has an answer here What does double.. 0 b 1 c 2 '.format a b c ... mylist 'aardvark' 'baboon' 'cat' print_three_things mylist a aardvark b baboon c cat As you.. 'cat' print_three_things mylist a aardvark b baboon c cat As you can see in this case it takes the list or tuple of items..
How can I represent an 'Enum' in Python? http://stackoverflow.com/questions/36932/how-can-i-represent-an-enum-in-python . ie. from enum import Enum Animal Enum 'Animal' 'ant bee cat dog' or equivalently class Animals Enum ant 1 bee 2 cat 3 dog.. cat dog' or equivalently class Animals Enum ant 1 bee 2 cat 3 dog 4 In earlier versions one way of accomplishing enums is..
Why is reading lines from stdin much slower in C++ than Python? http://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python .format count delta_sec lines_per_sec Here are my results cat test_lines . readline_test_cpp Saw 5570000 lines in 9 seconds... Saw 5570000 lines in 9 seconds. Crunch speed 618889 cat test_lines . readline_test.py Read 5570000 lines in 1 seconds... for i in 1..5 do echo Test run i at `date` echo n CPP cat test_lines . readline_test_cpp echo n Python cat test_lines..
What?䏭 the point of inheritance in Python? http://stackoverflow.com/questions/1020453/whats-the-point-of-inheritance-in-python Dog public Animal void speak std cout woff std endl class Cat public Animal void speak std cout meow std endl void makeSpeak.. std endl void makeSpeak Animal a a.speak int main Dog d Cat c makeSpeak d makeSpeak c As you can see makeSpeak is a routine.. late binding to take care of which method to call either Cat speak or Dog speak . This means that as far as makeSpeak is..
Right way to return proxy model instance from a base model instance in Django? http://stackoverflow.com/questions/2218867/right-way-to-return-proxy-model-instance-from-a-base-model-instance-in-django def make_sound self print Woof class Meta proxy True class Cat Animal def make_sound self print Meow class Meta proxy True.. From what I can tell there's no way of returning mixed Cat or Dog instances but I figured maybe I could define a get_proxy_model.. and pass something like the primary key and then just do Cat.objects.get pk passed_in_primary_key . But that'd mean doing..
As a Java programmer learning Python, what should I look out for? [closed] http://stackoverflow.com/questions/2339371/as-a-java-programmer-learning-python-what-should-i-look-out-for not interfaces . Don't create an Animal class for Dog and Cat to inherit from just so you can have a generic make_sound method... class Dog object def make_sound self return woof class Cat object def make_sound self return meow class LolCat object def.. class Cat object def make_sound self return meow class LolCat object def make_sound self return i can has cheezburger share..
Practical example of Polymorphism http://stackoverflow.com/questions/3724110/practical-example-of-polymorphism Subclass must implement abstract method class Cat Animal def talk self return 'Meow ' class Dog Animal def talk.. class Dog Animal def talk self return 'Woof Woof ' animals Cat 'Missy' Cat 'Mr. Mistoffelees' Dog 'Lassie' for animal in animals.. def talk self return 'Woof Woof ' animals Cat 'Missy' Cat 'Mr. Mistoffelees' Dog 'Lassie' for animal in animals print..
Python function local name binding from an outer scope http://stackoverflow.com/questions/3908335/python-function-local-name-binding-from-an-outer-scope Ideally the user defines def user_func Mouse.eat Cheese if Cat.find Mouse Cat.happy 1 Here Cat Mouse and Cheese are framework.. defines def user_func Mouse.eat Cheese if Cat.find Mouse Cat.happy 1 Here Cat Mouse and Cheese are framework objects that.. Mouse.eat Cheese if Cat.find Mouse Cat.happy 1 Here Cat Mouse and Cheese are framework objects that for good reasons..
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