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python Programming Glossary: integerWhat is a metaclass in Python? http://stackoverflow.com/questions/100003/what-is-a-metaclass-in-python creates strings objects and int the class that creates integer objects. type is just the class that creates class objects...
Is there a difference between `==` and `is` in python? http://stackoverflow.com/questions/132988/is-there-a-difference-between-and-is-in-python the second test only works because Python caches small integer objects which is an implementation detail. For larger integers.. objects which is an implementation detail. For larger integers this does not work 1000 is 10 3 False 1000 10 3 True The same..
Should you always favor xrange() over range()? http://stackoverflow.com/questions/135041/should-you-always-favor-xrange-over-range sequence multiple times. xrange has to reconstruct the integer object every time but range will have real integer objects... the integer object every time but range will have real integer objects. It will always perform worse in terms of memory however..
http://stackoverflow.com/questions/15112125/if-x-or-y-or-z-blah I'm trying to make a function that will decrypt an integer and output a string of three letters so basically I was wondering..
http://stackoverflow.com/questions/1746613/bitwise-operation-and-usage 1 0 One example is if you only want the lower 4 bits of an integer you AND it with 15 binary 1111 so 201 1100 1001 AND 15 0000..
What do (lambda) function closures capture in Python? http://stackoverflow.com/questions/2295290/what-do-lambda-function-closures-capture-in-python closures for i I expected it to store a pointer to the integer object currently pointed to by i . That means that when i assigned.. pointed to by i . That means that when i assigned a new integer object it shouldn't effect the previously created closures...
Evaluating a mathematical expression in a string http://stackoverflow.com/questions/2371436/evaluating-a-mathematical-expression-in-a-string def __init__ self expop '^' multop ' ' ' ' addop ' ' ' ' integer ' ' ' ' '0'..'9' atom PI E real fn ' ' expr ' ' ' ' expr ' '..
Is False == 0 and True == 1 in Python an implementation detail or is it guaranteed by the language? http://stackoverflow.com/questions/2764017/is-false-0-and-true-1-in-python-an-implementation-detail-or-is-it-guarante say that programmers can rely on booleans inheriting from integers with the values 0 and 1 . This question is relevant for writing.. would not work with an object which is not a subclass of integer because list indexing only works with integers or objects that.. subclass of integer because list indexing only works with integers or objects that define a __index__ method thanks mark dickinson..
Python “is” operator behaves unexpectedly with integers http://stackoverflow.com/questions/306313/python-is-operator-behaves-unexpectedly-with-integers &ldquo is&rdquo operator behaves unexpectedly with integers Why does the following behave unexpectedly in Python a 256.. that Python is internally implemented such that small integers are stored in a different way than larger integers and the.. small integers are stored in a different way than larger integers and the is operator can tell the difference. Why the leaky..
Python UnicodeDecodeError - Am I misunderstanding encode? http://stackoverflow.com/questions/368805/python-unicodedecodeerror-am-i-misunderstanding-encode number of the character in the Unicode tables as a 4 byte integer. Another very useful encoding is UTF 8 which can encode any..
Suggestions for a Cron like scheduler in Python? http://stackoverflow.com/questions/373335/suggestions-for-a-cron-like-scheduler-in-python True allMatch AllMatch def conv_to_set obj # Allow single integer to be provided if isinstance obj int long return set obj # Single..
http://stackoverflow.com/questions/379906/parse-string-to-float-or-int to its corresponding float value 542.2222 or 31 to an integer 31 I just want to know how to parse a float string to a float.. string to an int. python string parsing floating point integer share improve this question a 545.2222 float a 545.22220000000004..
python limiting floats to two decimal points http://stackoverflow.com/questions/455612/python-limiting-floats-to-two-decimal-points are binary they store floating point numbers as an integer and then divide it by a power of two so 13.95 will be represented.. in currency then you have a couple of better choices use integers and store values in cents not dollars and then divide by 100..
Simple Prime Generator in Python http://stackoverflow.com/questions/567222/simple-prime-generator-in-python by the current # number being tested. # D # The running integer that's checked for primeness q 2 while True if q not in D #..
Python rounding error with float numbers http://stackoverflow.com/questions/5997027/python-rounding-error-with-float-numbers a systematic error not in the sense it happens to every integer. So I created the following Python script # usr bin env python2.6..
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 was read by cin than it actually needed then the second integer value wouldn't be available for the scanf function which has..
Why is SQLAlchemy insert with sqlite 25 times slower than using sqlite3 directly? http://stackoverflow.com/questions/11769366/why-is-sqlalchemy-insert-with-sqlite-25-times-slower-than-using-sqlite3-directly import declarative_base from sqlalchemy import Column Integer String create_engine from sqlalchemy.orm import scoped_session.. class Customer Base __tablename__ customer id Column Integer primary_key True name Column String 255 def init_sqlalchemy.. import declarative_base from sqlalchemy import Column Integer String create_engine from sqlalchemy.orm import scoped_session..
http://stackoverflow.com/questions/15390807/integer-square-root-in-python square root in python Is there an integer square root somewhere..
Python “is” operator behaves unexpectedly with integers http://stackoverflow.com/questions/306313/python-is-operator-behaves-unexpectedly-with-integers what I found in the Python documentation 7.2.1 Plain Integer Objects The current implementation keeps an array of integer..
Why is it “Easier to ask forgiveness than permission” in python, but not in Java? [closed] http://stackoverflow.com/questions/6092992/why-is-it-easier-to-ask-forgiveness-than-permission-in-python-but-not-in-java in the Java community boolean is_integer Object input try Integer temp Integer input return true catch ClassCastException e return.. community boolean is_integer Object input try Integer temp Integer input return true catch ClassCastException e return false Why..
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 factorCount' code isn't explicitly typed and defaulting to Integer thanks to Daniel for correcting my misdiagnosis here . Giving.. long as the values are less than MAXINT In Haskell using Integer is slower than Int but how much slower depends on the computations..
http://stackoverflow.com/questions/7782721/java-raw-audio-output boolean addHarmonic harmonic.isSelected int intSR Integer sampleRate.getSelectedItem .intValue int intFPW framesPerWavelength.getValue.. getParameter samplerate if sampleRate null try int sR Integer.parseInt sampleRate bp.setSampleRate sR catch NumberFormatException.. String fpw getParameter fpw if fpw null try int fPW Integer.parseInt fpw JSlider slider bp.getFramesPerWavelengthSlider..
using pyodbc on ubuntu to insert a image field on SQL Server http://stackoverflow.com/questions/1060035/using-pyodbc-on-ubuntu-to-insert-a-image-field-on-sql-server DROP TABLE testing cur.execute ''' CREATE TABLE testing id INTEGER NOT NULL IDENTITY 1 1 myimage IMAGE NULL PRIMARY KEY id '''.. DROP TABLE testing cur.execute ''' CREATE TABLE testing id INTEGER NOT NULL IDENTITY 1 1 myimage IMAGE NULL PRIMARY KEY id '''..
How to model a contract database (with several buyers or sellers) using GAE datastore http://stackoverflow.com/questions/11294526/how-to-model-a-contract-database-with-several-buyers-or-sellers-using-gae-data look something like this I guess CREATE TABLE people id INTEGER 8 NOT NULL AUTO_INCREMENT PRIMARY KEY name VARCHAR 250 NOT NULL.. COLLATE utf8_general_ci CREATE TABLE contracts idContract INTEGER 7 NOT NULL AUTO_INCREMENT PRIMARY KEY contractType VACHAR 12.. utf8_general_ci CREATE TABLE contractingParties FK_id INTEGER 7 NOT NULL FOREIGN KEY FK_id references people id FK_idContract..
Why is SQLAlchemy insert with sqlite 25 times slower than using sqlite3 directly? http://stackoverflow.com/questions/11769366/why-is-sqlalchemy-insert-with-sqlite-25-times-slower-than-using-sqlite3-directly IF EXISTS customer c.execute CREATE TABLE customer id INTEGER NOT NULL name VARCHAR 255 PRIMARY KEY id conn.commit return.. IF EXISTS customer c.execute CREATE TABLE customer id INTEGER NOT NULL name VARCHAR 255 PRIMARY KEY id conn.commit return..
Error: AttributeError: Transaction instance has no attribute 'trans_handle' http://stackoverflow.com/questions/12781696/error-attributeerror-transaction-instance-has-no-attribute-trans-handle namefield 'name' if namefield 'datatype' 'FMTBCD' s ' ' ' INTEGER NOT NULL' else if namefield 'datatype' 'STRING' s ' ' 'VARCHAR'.. 1' else if namefield 'datatype' 'LARGEINT' s ' ' 'INTEGER' else if namefield 'datatype' 'SMALLINT' s ' ' 'INTEGER'.. else if namefield 'datatype' 'SMALLINT' s ' ' 'INTEGER' else if namefield 'datatype' 'CURRENCY' s ' ' 'NUMERIC..
Connection error to Access database http://stackoverflow.com/questions/12800101/connection-error-to-access-database sql sys.version_info s1 ''' create table CLIENTS ID INTEGER NOT NULL COMPANY VARCHAR 50 LAST NAME VARCHAR 50 FIRST NAME..
Parameter substitution for a SQLite “IN” clause http://stackoverflow.com/questions/1309989/parameter-substitution-for-a-sqlite-in-clause c sqlite3.connect memory c.execute 'CREATE TABLE distro id INTEGER PRIMARY KEY AUTOINCREMENT name TEXT ' for name in 'Ubuntu Fedora..
SQLite parameter substitution problem http://stackoverflow.com/questions/228912/sqlite-parameter-substitution-problem have 8 bindings. cursor.execute CREATE TABLE Equipment id INTEGER PRIMARY KEY name TEXT price INTEGER weight REAL info TEXT ammo_cap.. TABLE Equipment id INTEGER PRIMARY KEY name TEXT price INTEGER weight REAL info TEXT ammo_cap INTEGER availability_west TEXT.. KEY name TEXT price INTEGER weight REAL info TEXT ammo_cap INTEGER availability_west TEXT availability_east TEXT However when I..
Merge SQLite files into one db file, and 'begin/commit' question http://stackoverflow.com/questions/3689694/merge-sqlite-files-into-one-db-file-and-begin-commit-question object at 0x0104B020 cur.execute 'CREATE TABLE test id INTEGER ' sqlite3.Cursor object at 0x0104B020 cur.execute 'INSERT INTO..
Python: Set Bits Count (popcount) http://stackoverflow.com/questions/407587/python-set-bits-count-popcount INTEGER VALUE 15 There was a variance between the hex code and the integer..
How to get datatypes of specific fields of an Access database using pyodbc? http://stackoverflow.com/questions/4539254/how-to-get-datatypes-of-specific-fields-of-an-access-database-using-pyodbc and datatypes but I'm having trouble getting the datatypes INTEGER VARCHAR etc. of the respective columns in the existing tables...
How do you verify an RSA SHA1 signature in Python? http://stackoverflow.com/questions/544433/how-do-you-verify-an-rsa-sha1-signature-in-python 0 unused bits encapsulates 22 30 137 SEQUENCE 25 02 129 INTEGER 00 DF 1B 82 2E 14 ED A1 FC B7 43 36 6A 27 C0 63 70 E6 CA D6.. 91 E6 A5 56 F5 F0 D7 73 CB 20 D1 3F 62 9B 63 91 157 02 3 INTEGER 65537 For a 1024 bit RSA key you can treat 30819f300d06092a864886f70d010101050003818d00308189028181..
using pyodbc on linux to insert unicode or utf-8 chars in a nvarchar mssql field http://stackoverflow.com/questions/947077/using-pyodbc-on-linux-to-insert-unicode-or-utf-8-chars-in-a-nvarchar-mssql-field s cur con.cursor cur.execute ''' CREATE TABLE testing id INTEGER NOT NULL IDENTITY 1 1 name NVARCHAR 200 NULL PRIMARY KEY id..
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