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python Programming Glossary: indexCommon pitfalls in Python [duplicate] http://stackoverflow.com/questions/1011431/common-pitfalls-in-python python share improve this question Don't use index to loop over a sequence Don't for i in range len tab print tab.. for you. Use enumerate if you really need both the index and the element. for i elem in enumerate tab print i elem Be..
Python list doesn't reflect variable change http://stackoverflow.com/questions/12080552/python-list-doesnt-reflect-variable-change to alive held by the list by reassigning the list by index to refer to each thread in your example that's thread 1 palin..
Local variables in Python nested functions http://stackoverflow.com/questions/12423614/local-variables-in-python-nested-functions then bound as cells to the function with the code using an index to reference each cell. pet_function thus has one free variable.. cage which is then referenced via a function scope cell index 0. The cell itself points to the local variable cage in the..
http://stackoverflow.com/questions/13058458/python-list-index something that I misunderstand about range and Python list index some_list 4 4 0 for i in range 3 for j in range 3 some_list..
Differences between isinstance() and type() in python http://stackoverflow.com/questions/1549801/differences-between-isinstance-and-type-in-python . Strings are sequences you could loop over them index them slice them ... but you generally want to treat them as..
Loop “Forgets” to Remove Some Items http://stackoverflow.com/questions/17299581/loop-forgets-to-remove-some-items just syntactic sugar it still accesses list elements by index. So when you remove elements from the list while iterating over.. see the second o in look you skip over it because the index has advanced past it when you deleted the previous element...
Fastest way to list all primes below N in python http://stackoverflow.com/questions/2068372/fastest-way-to-list-all-primes-below-n-in-python useful multiple of 30 pos a # on tkc then I need the index given by the product of 30 pos a 30 pos b # in general. If b..
http://stackoverflow.com/questions/212358/binary-search-in-python and I need to be able to access the values based on their index. And also I want to be able to find the index of a particular.. on their index. And also I want to be able to find the index of a particular value or None if the value is not in the list...
Short Description of Python Scoping Rules http://stackoverflow.com/questions/291978/short-description-of-python-scoping-rules class namespace In the function definition In the for loop index variable Inside the for loop Also there is the context during..
What are “named tuples” in Python? http://stackoverflow.com/questions/2970608/what-are-named-tuples-in-python named tuples before and I thought elements could either be indexed by numbers like in tuples and lists or by keys like in dicts.. or by keys like in dicts . I never expected they could be indexed both ways. Thus my questions are What are named tuples How.. 1.0 5.0 pt2 Point 2.5 1.5 from math import sqrt # use index referencing line_length sqrt pt1 0 pt2 0 2 pt1 1 pt2 1 2 # use..
Weighted random selection with and without replacement http://stackoverflow.com/questions/352670/weighted-random-selection-with-and-without-replacement set of equal sized bins for the weighted list that can be indexed very efficiently through bit operations to avoid a binary.. say binary 0.001100000 bitshift it lg2 p finding the index partition. Thus we shift it three yielding 001.1 or position..
Python/Tkinter: Interactively validating Entry widget content http://stackoverflow.com/questions/4140437/python-tkinter-interactively-validating-entry-widget-content page # d Type of action 1 insert 0 delete 1 for others # i index of char string to be inserted deleted or 1 # P value of the..
Find all occurrences of a substring in Python http://stackoverflow.com/questions/4664850/find-all-occurrences-of-a-substring-in-python Python Python has string.find and string.rfind to get the index of a substring in string. I wonder maybe there is something.. like string.find_all which can return all founded indexes not only first from beginning or first from end For example..
Accessing the index in Python for loops http://stackoverflow.com/questions/522563/accessing-the-index-in-python-for-loops the index in Python for loops Does anyone know how to access the index.. in Python for loops Does anyone know how to access the index itself for a list like this ints 8 23 45 12 78 When I loop through.. loop through it using a for loop how do I access the loop index from 1 to 5 in this case python loops list share improve..
Replacements for switch statement in python? http://stackoverflow.com/questions/60208/replacements-for-switch-statement-in-python different fixed values based on the value of an input index. In other languages I would use a switch or case statement but..
Use numpy array in shared memory for multiprocessing http://stackoverflow.com/questions/7894791/use-numpy-array-in-shared-memory-for-multiprocessing N # ... def f i # could be anything numpy accepts as an index such another numpy array with shared_arr.get_lock # synchronize..
Validate SSL certificates with Python http://stackoverflow.com/questions/1087227/validate-ssl-certificates-with-python I have added a distribution to the Python Package Index which makes the match_hostname function from the Python 3.2..
Which Python memory profiler is recommended? [closed] http://stackoverflow.com/questions/110259/which-python-memory-profiler-is-recommended of a set of 132527 objects. Total size 8301532 bytes. Index Count Size Cumulative Kind class dict of class 0 35144 27 2140412..
What is the most compatible way to install python modules on a Mac? http://stackoverflow.com/questions/1213690/what-is-the-most-compatible-way-to-install-python-modules-on-a-mac easy_install django easy_install uses the Python Package Index which is an amazing resource for python developers. Have a look..
http://stackoverflow.com/questions/13058458/python-list-index List Index I have experienced some problem by using a nested list in Python..
Simple example of how to use ast.NodeVisitor? http://stackoverflow.com/questions/1515357/simple-example-of-how-to-use-ast-nodevisitor y x ' x.visit t emits Module AugAssign Subscript Name Load Index Name Load Store Add Subscript Name Load Index Tuple Name Load.. Name Load Index Name Load Store Add Subscript Name Load Index Tuple Name Load Name Load Load Load But suppose we didn't care.. at all. So y w y.visit t Module AugAssign Subscript Name Index Name Store Add Subscript Name Index Tuple Name Name or suppose..
Having trouble making a list of lists of a designated size [duplicate] http://stackoverflow.com/questions/17411892/having-trouble-making-a-list-of-lists-of-a-designated-size This question already has an answer here Python List Index 2 answers I am trying to make a list of lists of about..
Generating sublists using multiplication ( * ) unexpected behavior [duplicate] http://stackoverflow.com/questions/17702937/generating-sublists-using-multiplication-unexpected-behavior in a Python list of lists 4 answers Python List Index 2 answers I'm sure this has been answered somewhere..
http://stackoverflow.com/questions/2213551/installing-scipy-with-pip a problem with their listing in the Python Package Index which pip searches. easy_install scipy Searching for scipy Reading..
How do I profile memory usage in Python? [duplicate] http://stackoverflow.com/questions/552744/how-do-i-profile-memory-usage-in-python of a set of 48477 objects. Total size 3265516 bytes. Index Count Size Cumulative Kind class dict of class 0 25773 53 1612820.. 1 Partition of a set of 3 objects. Total size 176 bytes. Index Count Size Cumulative Kind class dict of class 0 1 33 136 77..
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell http://stackoverflow.com/questions/6964392/speed-comparison-with-project-euler-c-vs-python-vs-erlang-vs-haskell Number Sqrt Candidate 1 Count end. nextTriangle Index Triangle Count factorCount Triangle if Count 1000 Triangle true.. Triangle if Count 1000 Triangle true nextTriangle Index 1 Triangle Index 1 end. solve io format ~p~n nextTriangle 1.. if Count 1000 Triangle true nextTriangle Index 1 Triangle Index 1 end. solve io format ~p~n nextTriangle 1 1 halt 0 . factorCount..
Why is the same SQLite query being 30 times slower when fetching only twice as many results? http://stackoverflow.com/questions/10531898/why-is-the-same-sqlite-query-being-30-times-slower-when-fetching-only-twice-as-m feature ~100000 rows ' 0 1 1 u'SEARCH TABLE spectrum USING INDEX fk_spectrum_scahn_start_time_1 scan_start_time AND scan_start_time.. ~3125 rows ' 0 2 0 u'SEARCH TABLE MSMS_precursor USING INDEX fk_MSMS_precursor_spectrum_spectrum_id_1 spectrum_spectrum_id.. feature ~100000 rows ' 0 1 1 u'SEARCH TABLE spectrum USING INDEX fk_spectrum_scahn_start_time_1 scan_start_time AND scan_start_time..
http://stackoverflow.com/questions/1067060/translating-perl-to-python line ~ COMMIT line ~ sqlite_sequence line ~ CREATE UNIQUE INDEX if line ~ CREATE TABLE a z_ . name 1 sub 2 sub ~ s g # line.. TRANSACTION' 'COMMIT' 'sqlite_sequence' 'CREATE UNIQUE INDEX' if nope in line break else process True if not process continue..
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