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python Programming Glossary: primaryTo make a plan for my first MySQL project http://stackoverflow.com/questions/1168701/to-make-a-plan-for-my-first-mysql-project to get the right way in designing databases to get primary and foreign keys right in ERD to understand login variable in..
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 Customer Base __tablename__ customer id Column Integer primary_key True name Column String 255 def init_sqlalchemy dbname 'sqlite.. this as well as an ORM version that pre assigns primary key identifiers so that the ORM can use executemany to insert.. Customer Base __tablename__ customer id Column Integer primary_key True name Column String 255 def init_sqlalchemy dbname 'sqlite..
http://stackoverflow.com/questions/119404/time-length-of-an-mp3-file endl system PAUSE return 0 determine beginning and end of primary frame data not ID3 tags infile.seekg 0 ios end streampos dataEnd..
Proper way to declare custom exceptions in modern Python? http://stackoverflow.com/questions/1319615/proper-way-to-declare-custom-exceptions-in-modern-python to declare custom exception classes in modern Python My primary goal is to follow whatever standard other exception classes..
Why is numpy's einsum faster than numpy's built in functions? http://stackoverflow.com/questions/18365073/why-is-numpys-einsum-faster-than-numpys-built-in-functions np.kron and np.sum regardless of axes selection. The primary exception being np.dot as it calls DGEMM from a BLAS library...
What is the best approach to change primary keys in an existing Django app? http://stackoverflow.com/questions/2055784/what-is-the-best-approach-to-change-primary-keys-in-an-existing-django-app is the best approach to change primary keys in an existing Django app I have an application which.. The model of this app has some classes with an explicit primary_key. As a consequence Django use the fields and doesn't create.. Something models.Model name models.CharField max_length 64 primary_key True I think that it was a bad idea see http stackoverflow.com..
Official multiple python versions on the same machine? http://stackoverflow.com/questions/2547554/official-multiple-python-versions-on-the-same-machine to the configure script you must take care that your primary python executable is not overwritten by the installation of.. same prefix you must decide which version if any is your primary version. Install that version using make install . Install all.. want to install Python 2.5 2.6 and 3.0 with 2.6 being the primary version you would execute make install in your 2.6 build directory..
In Python, after I INSERT Into mysqldb, how do I get the “id”? http://stackoverflow.com/questions/2548493/in-python-after-i-insert-into-mysqldb-how-do-i-get-the-id INSERT Into mysqldb how do I get the &ldquo id&rdquo The primary key. cursor.execute INSERT INTO mytable height VALUES s height.. mytable height VALUES s height My table has 2 columns id primary auto increment height this is the other column. How do I get..
What cross-platform GUI libraries are simple, lightweight, and have minimal dependencies? http://stackoverflow.com/questions/426718/what-cross-platform-gui-libraries-are-simple-lightweight-and-have-minimal-depe on the right and I think it would be useful to consider my primary requirement to be minimal dependencies . GUI Programming APIs..
Creating a singleton in python http://stackoverflow.com/questions/6760685/creating-a-singleton-in-python about there is not really shared state . This negates the primary argument against the singleton pattern and makes them a reasonable..
What's a good lightweight Python MVC framework? [closed] http://stackoverflow.com/questions/68986/whats-a-good-lightweight-python-mvc-framework out there. Can you guys point me in the right direction My primary concern is simplicity I don't need a lot of extraneous features...
Python: Is explicitly closing files important? http://stackoverflow.com/questions/7395542/python-is-explicitly-closing-files-important for loop because CPython uses reference counting as its primary garbage collection mechanism but that's an implementation detail..
How to find out the arity of a method in Python http://stackoverflow.com/questions/990016/how-to-find-out-the-arity-of-a-method-in-python four items args varargs varkw defaults len args is the primary arity but arity can be anything from that to infinity if you..
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 id INTEGER NOT NULL IDENTITY 1 1 myimage IMAGE NULL PRIMARY KEY id ''' con.commit Everything WORKS up to this point. I have.. id INTEGER NOT NULL IDENTITY 1 1 myimage IMAGE NULL PRIMARY KEY id ''' con.commit cur con.cursor url 'http www.forestwander.com..
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 CREATE TABLE customer id INTEGER NOT NULL name VARCHAR 255 PRIMARY KEY id conn.commit return conn def test_sqlite3 n 100000 dbname.. CREATE TABLE customer id INTEGER NOT NULL name VARCHAR 255 PRIMARY KEY id conn.commit return conn def test_sqlite3 n 100000 dbname..
Parameter substitution for a SQLite “IN” clause http://stackoverflow.com/questions/1309989/parameter-substitution-for-a-sqlite-in-clause memory c.execute 'CREATE TABLE distro id INTEGER PRIMARY KEY AUTOINCREMENT name TEXT ' for name in 'Ubuntu Fedora Puppy..
Using a WHERE ___ IN ___ statement http://stackoverflow.com/questions/14245396/using-a-where-in-statement c.execute '''CREATE TABLE IF NOT EXISTS tab _id integer PRIMARY KEY AUTOINCREMENT obj text NOT NULL ''' I'm trying to do something..
How to insert arrays into a database? http://stackoverflow.com/questions/3738269/how-to-insert-arrays-into-a-database TABLE `dogs` `id` INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY `name` VARCHAR 64 `age` INT UNSIGNED `sex` ENUM 'Male' 'Female'.. `id` INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY `dog_id` INT UNSIGNED NOT NULL `paw` ENUM 'Front Left' 'Front.. `id` INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY `dog_measurement_id` INT UNSIGNED NOT NULL `frame` INT UNSIGNED..
Executing “SELECT … WHERE … IN …” using MySQLdb http://stackoverflow.com/questions/4574609/executing-select-where-in-using-mysqldb int 11 NOT NULL AUTO_INCREMENT `bar` varchar 10 NOT NULL PRIMARY KEY `fooid` Query OK 0 rows affected 0.01 sec mysql INSERT into..
Ways to avoid MySQLdb's “Commands out of sync; you can't run this command now” (2014) exception http://stackoverflow.com/questions/4707957/ways-to-avoid-mysqldbs-commands-out-of-sync-you-cant-run-this-command-now cursor.execute BEGIN CREATE TABLE t1 t1_id INT PRIMARY KEY AUTO_INCREMENT COMMIT cursor.execute BEGIN CREATE TABLE.. COMMIT cursor.execute BEGIN CREATE TABLE t2 t2_id INT PRIMARY KEY AUTO_INCREMENT COMMIT The exception is raised during execution.. work around cursor.execute BEGIN CREATE TABLE t1 t1_id INT PRIMARY KEY AUTO_INCREMENT COMMIT while cursor.nextset is not None pass..
Use binary COPY table FROM with psycopg2 http://stackoverflow.com/questions/8144002/use-binary-copy-table-from-with-psycopg2 is an example database DDL CREATE TABLE num_data id serial PRIMARY KEY NOT NULL node integer NOT NULL ts smallint NOT NULL val1.. that look like CREATE TABLE num_data_binary id integer PRIMARY KEY node integer NOT NULL ts smallint NOT NULL s0 real s1 real..
Complex foreign key constraint in SQLAlchemy http://stackoverflow.com/questions/8394177/complex-foreign-key-constraint-in-sqlalchemy it CREATE TEMP TABLE systemvariables variable_id integer PRIMARY KEY variable text choice_id integer INSERT INTO systemvariables.. 'var3' CREATE TEMP TABLE variableoptions option_id integer PRIMARY KEY option text variable_id integer REFERENCES systemvariables.. . CREATE TEMP TABLE systemvariables variable_id integer PRIMARY KEY variable text choice_id integer NOT NULL CREATE TEMP TABLE..
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 id INTEGER NOT NULL IDENTITY 1 1 name NVARCHAR 200 NULL PRIMARY KEY id ''' con.commit Everything WORKS up to this point. I have..
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