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python Programming Glossary: l.appendBase-2 (Binary) Representation Using Python http://stackoverflow.com/questions/187273/base-2-binary-representation-using-python other digits elif x 0 sign ' ' x 1 else sign '' l while x l.append _conv_table x 0xff x 8 return sign ''.join reversed l .lstrip..
Time complexity of accessing a Python dict http://stackoverflow.com/questions/1963507/time-complexity-of-accessing-a-python-dict 0 50 for y in range 0 50 if hash x y in l print Fail x y l.append hash x y print Test Finished CodePad Available for 24 hours..
Python - Create a list with initial capacity http://stackoverflow.com/questions/311775/python-create-a-list-with-initial-capacity capacity Code like this often happens l while foo #baz l.append bar #qux This is really slow if you're about to append thousands..
Python: Advanced Nested List Comprehension Syntax http://stackoverflow.com/questions/3766711/python-advanced-nested-list-comprehension-syntax l for i in range 2 ... for x in range 10 ... if x 2 i ... l.append x ... l 0 2 4 6 8 1 3 5 7 9 # so where is my list comprehension.. 2 would be l for x in range 10 if x 2 i for i in range 2 l.append x which also gives a name error. EDIT2 the parenthesed version..
http://stackoverflow.com/questions/571488/triangle-numbers-in-python one 0 a a b b 1 for x in range 1 int a 2 1 if a x 0 l.append x if len l 499 print a if __name__ '__main__' main python.. your algorithm then you can make it faster by replace l.append by factor_count 1 enumerate to int a .5 instead of a 2 use factor_count..
Python, forcing a list to a fixed size http://stackoverflow.com/questions/5944708/python-forcing-a-list-to-a-fixed-size the last 5 variables entered into it. Here is an example l l.append 'apple' l.append 'orange' l.append 'grape' l.append 'banana'.. entered into it. Here is an example l l.append 'apple' l.append 'orange' l.append 'grape' l.append 'banana' l.append 'mango'.. Here is an example l l.append 'apple' l.append 'orange' l.append 'grape' l.append 'banana' l.append 'mango' print l 'apple' 'orange'..
How can I intercept calls to python's “magic” methods in new style classes? http://stackoverflow.com/questions/9057669/how-can-i-intercept-calls-to-pythons-magic-methods-in-new-style-classes #call to __repr__ __main__.ShowMeList object at 0x9640eac l.append 9 before the call after the call len l._data 9 If I don't inherit.. to __repr__ before the call after the call 0 1 2 3 4 5 6 7 l.append 9 before the call after the call len l._data 9 How do I accomplish..
Using itertools.product and want to seed a value http://stackoverflow.com/questions/9864809/using-itertools-product-and-want-to-seed-a-value x in range 0 self.num_gears index limit self.indicies x l.append self.gears x index self.roll_gears return tuple l p product..
http://stackoverflow.com/questions/12647254/project-euler-17 s ''.join s s int s return s L for i in range 1 1001 1 L.append i def one_digit n q maps n return q def eleven n q maps 11 return..
Is there a difference between `==` and `is` in python? http://stackoverflow.com/questions/132988/is-there-a-difference-between-and-is-in-python a list say Okay so this kind of answers my question L L.append 1 if L 1 print 'Yay ' # Holds true but... if L is 1 print 'Yay..
Is there any simple way to benchmark python script? http://stackoverflow.com/questions/1593019/is-there-any-simple-way-to-benchmark-python-script timeit def test Stupid test function L for i in range 100 L.append i if __name__ '__main__' import timeit print timeit.timeit test..
Local scope, beyond the scope of the enclosing http://stackoverflow.com/questions/17167764/local-scope-beyond-the-scope-of-the-enclosing the variable i does not exist . def f L for i in range 5 L.append lambda x i x return L L f L 0 def f1 N def f2 X return X N return.. capture it in a keyword argument def f L for i in range 5 L.append lambda x i i i x return L Now i is a local variable to the lambda..
Find all Chinese text in a string using Python and Regex http://stackoverflow.com/questions/2718196/find-all-chinese-text-in-a-string-using-python-and-regex if isinstance i list f t i try f unichr f t unichr t L.append ' s s' f t except pass # A narrow python build so can't use.. so can't use chars 65535 without surrogate pairs else try L.append unichr i except pass RE ' s ' ''.join L print 'RE ' RE.encode..
What is the difference between LIST.append(1) and LIST = LIST + [1] (Python) http://stackoverflow.com/questions/3638486/what-is-the-difference-between-list-append1-and-list-list-1-python interactive shell these statements I get this L 1 2 3 K L L.append 4 L 1 2 3 4 K 1 2 3 4 But when I do exactly the same thing replacing.. 4 K 1 2 3 4 But when I do exactly the same thing replacing L.append 4 with L L 4 I get L 1 2 3 4 K 1 2 3 Is this some sort of reference.. Thanks python list append share improve this question L.append 4 This adds an element on to the end of the existing list L..
Conditional statements with Python lists http://stackoverflow.com/questions/4011728/conditional-statements-with-python-lists try idx map lambda s v 'N' 'Y' s str1 L .index 'Y' except L.append str1 1 else L idx str1 L idx 1 1 L str1 'hello' AddString str1.. Initially the list is empty and I add the string s with L.append s . L 'Hello world' 'Hello world' 'Hello world' If the last.. try idx map lambda s v 'N' 'Y' s str L .index 'Y' except L.append str 1 else L idx str L idx 1 1 Print the inside of an HTML table..
http://stackoverflow.com/questions/477096/python-import-coding-style Top Import import random def f L for i in xrange 1000 L.append random.random for i in xrange 10000 f time python test.py real.. Function Body def f import random L for i in xrange 1000 L.append random.random for i in xrange 10000 f time python test2.py real..
Applying a method with no return value to each element of a list http://stackoverflow.com/questions/5766816/applying-a-method-with-no-return-value-to-each-element-of-a-list random L for x in range 5 l range 5 random.shuffle l L.append l Clean and simple. Your shuffled function is also just fine..
Default values for arguments [duplicate] http://stackoverflow.com/questions/6938655/default-values-for-arguments Default Argument Consider the following function def foo L L.append 1 print L Each time I call foo it will print a new list with.. object needs to be bound to a def foo L ... print id L ... L.append 1 ... print id L ... print L ... foo 3077669452 3077669452 1..
http://stackoverflow.com/questions/7776938/python-insert-vs-append insert and append methods. Snippet 1 L for i in range 10 5 L.append i L.reverse Time taken to execute this real 0m0.070s user 0m0.064s..
Easiest way to calculate execution time of a python script? http://stackoverflow.com/questions/8631743/easiest-way-to-calculate-execution-time-of-a-python-script follows def test Stupid test function L for i in range 100 L.append i if __name__ '__main__' from timeit import Timer t Timer test..
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