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python Programming Glossary: tablePython Numpy Very Large Matrices http://stackoverflow.com/questions/1053928/python-numpy-very-large-matrices the data as a numpy recarray again is as simple as data table row_from row_to The HDF library takes care of reading in the..
Understanding kwargs in Python http://stackoverflow.com/questions/1769403/understanding-kwargs-in-python kwargs in Python I know you can do an objects.filter on a table and pass in a kwargs argument. Can I also do this for specifying..
http://stackoverflow.com/questions/212358/binary-search-in-python My intended usage would be a sort of double way look up table. I have in the table a list of values and I need to be able.. would be a sort of double way look up table. I have in the table a list of values and I need to be able to access the values..
Python - Is a dictionary slow to find frequency of each character? http://stackoverflow.com/questions/2522152/python-is-a-dictionary-slow-to-find-frequency-of-each-character this question Performance comparison Note time in the table doesn't include the time it takes to load files. approach american.. typedef std tr1 unordered_map wchar_t size_t hashtable_t hashtable_t counts for wchar_t ch f ch counts ch print result.. std tr1 unordered_map wchar_t size_t hashtable_t hashtable_t counts for wchar_t ch f ch counts ch print result wofstream..
Best way to strip punctuation from a string in Python http://stackoverflow.com/questions/265960/best-way-to-strip-punctuation-from-a-string-in-python it's performing raw string operations in C with a lookup table there's not much that will beat that bar writing your own C.. s string. With. Punctuation exclude set string.punctuation table string.maketrans regex re.compile ' s ' re.escape string.punctuation.. return regex.sub '' s def test_trans s return s.translate table string.punctuation def test_repl s # From S.Lott's solution..
Python UnicodeDecodeError - Am I misunderstanding encode? http://stackoverflow.com/questions/368805/python-unicodedecodeerror-am-i-misunderstanding-encode unicode as the norm or the ideal state. Unicode is just a table of characters. 5 is latin capital A. 37 is greek capital omega... 4 bytes contain the number of the character in the Unicode tables as a 4 byte integer. Another very useful encoding is UTF 8..
Using Django time/date widgets in custom form http://stackoverflow.com/questions/38601/using-django-time-date-widgets-in-custom-form that I want it applied on. form action . method POST table for f in form tr td f.name td td f td tr endfor table input.. table for f in form tr td f.name td td f td tr endfor table input type submit name submit value Add Product form Also I..
Remove specific characters from a string in python http://stackoverflow.com/questions/3939361/remove-specific-characters-from-a-string-in-python share improve this question Strings in python are immutable can't be changed . Because of this the effect of line.replace.. with earlier Pythons you can create a null translation table to pass in place of None import string line line.translate string.maketrans.. @# ' Here string.maketrans is used to create a translation table which is just a string containing the characters with ordinal..
Dynamically adding a form to a Django formset with Ajax http://stackoverflow.com/questions/501719/dynamically-adding-a-form-to-a-django-formset-with-ajax for form in serviceFormset.forms div class 'table' table class 'no_error' form.as_table table div endfor input.. for form in serviceFormset.forms div class 'table' table class 'no_error' form.as_table table div endfor input type button.. div class 'table' table class 'no_error' form.as_table table div endfor input type button value Add More id add_more..
Why is python ordering my dictionary like so? http://stackoverflow.com/questions/526125/why-is-python-ordering-my-dictionary-like-so dictionary is most probably implemented as a hash table in fact the Python documentation states this outright where.. obvious. Your observations match the rules of a hash table perfectly apparent arbitrary but constant order. share improve..
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 for a 100M line file on a fast disk. Here's the complete table now Implementation Lines per second cin default 819 672 python..
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 conn sqlite3.connect dbname c conn.cursor c.execute DROP TABLE IF EXISTS customer c.execute CREATE TABLE customer id INTEGER.. c.execute DROP TABLE IF EXISTS customer c.execute CREATE TABLE customer id INTEGER NOT NULL name VARCHAR 255 PRIMARY KEY id.. conn sqlite3.connect dbname c conn.cursor c.execute DROP TABLE IF EXISTS customer c.execute CREATE TABLE customer id INTEGER..
Using a WHERE ___ IN ___ statement http://stackoverflow.com/questions/14245396/using-a-where-in-statement a WHERE _ IN _ statement Definition c.execute '''CREATE TABLE IF NOT EXISTS tab _id integer PRIMARY KEY AUTOINCREMENT obj..
Parameterized queries with psycopg2 / Python DB-API and PostgreSQL http://stackoverflow.com/questions/1466741/parameterized-queries-with-psycopg2-python-db-api-and-postgresql
MySQL “incorrect string value” error when save unicode string in Django http://stackoverflow.com/questions/2108824/mysql-incorrect-string-value-error-when-save-unicode-string-in-django character set in MySQL. Here's the command I used ALTER TABLE database.table MODIFY COLUMN col VARCHAR 255 CHARACTER SET utf8..
Importing a CSV file into a sqlite3 database table using Python http://stackoverflow.com/questions/2887878/importing-a-csv-file-into-a-sqlite3-database-table-using-python sqlite3.connect memory cur con.cursor cur.execute CREATE TABLE t col1 col2 with open 'data.csv' 'rb' as fin # `with` statement..
http://stackoverflow.com/questions/3247183/variable-table-name-in-sqlite what to do. Currently I'm doing this cursor.execute CREATE TABLE StarFrame self.name etc etc This works but I would like to do.. would like to do something more like cursor.execute CREATE TABLE StarFrame etc etc self.name though I understand that this would.. I would settle for something like cursor.execute CREATE TABLE etc etc self.name If this is not at all possible I'll accept..
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 sqlite3.Cursor object at 0x0104B020 cur.execute 'CREATE TABLE test id INTEGER ' sqlite3.Cursor object at 0x0104B020 cur.execute..
Python & MySql: Unicode and Encoding http://stackoverflow.com/questions/8365660/python-mysql-unicode-and-encoding it from python side Here is my table structure CREATE TABLE yahoo_questions question_id varchar 40 NOT NULL question_subj..
Complex foreign key constraint in SQLAlchemy http://stackoverflow.com/questions/8394177/complex-foreign-key-constraint-in-sqlalchemy tables so you can easily play with it CREATE TEMP TABLE systemvariables variable_id integer PRIMARY KEY variable text.. variable VALUES 1 'var1' 2 'var2' 3 'var3' CREATE TEMP TABLE variableoptions option_id integer PRIMARY KEY option text variable_id.. option_id variable_id needed for the foreign key ALTER TABLE systemvariables ADD CONSTRAINT systemvariables_choice_id_fk..
Optimizing performance of Postgresql database writes in Django? http://stackoverflow.com/questions/9423539/optimizing-performance-of-postgresql-database-writes-in-django 'tmp_x' Create the temporary table CREATE TEMP TABLE tmp_x id int val_a int val_b text Or to just duplicate the structure.. duplicate the structure of an existing table CREATE TEMP TABLE tmp_x AS SELECT FROM tbl LIMIT 0 Copy values should take seconds.. tbl.id tmp_x.id Finally drop the temporary table DROP TABLE tmp_x Or have it dropped automatically at the end of the session...
Common pitfalls in Python [duplicate] http://stackoverflow.com/questions/1011431/common-pitfalls-in-python in a PDF generation function's argument list and now Table of Contents gets longer and longer after each invocation of..
How to remove convexity defects in a Sudoku square? http://stackoverflow.com/questions/10196198/how-to-remove-convexity-defects-in-a-sudoku-square l_ ComponentMeasurements Image l Centroid 1 2 gridCenters Table centerOfGravity ImageData Dilation Image h DiskMatrix 2 ImageData..
How to trouble-shoot HDFStore Exception: cannot find the correct atom type http://stackoverflow.com/questions/15488809/how-to-trouble-shoot-hdfstore-exception-cannot-find-the-correct-atom-type table looks like at the exception ipdb self.table df table Table 10000 '' description index Int64Col shape dflt 0 pos 0 values_block_0..
ode integration in python versus mathematica results http://stackoverflow.com/questions/16222302/ode-integration-in-python-versus-mathematica-results xl4 yl4 0 2000 Show g2 g1 g3 g4 Boxed False XYdata Flatten Table Evaluate x1 t x2 t x3 t .s t 5.5 24 3600 5.78 24 3600 1 1 X1Y1data.. t x3 t .s t 5.5 24 3600 5.78 24 3600 1 1 X1Y1data Flatten Table Evaluate x1' t x2' t x3' t .s t 5.5 24 3600 5.78 24 3600 1 1..
http://stackoverflow.com/questions/1898305/python-csv-into-dictionary row 1 self.ID.append row 2 self.sport.append row 3 def Tableformat self print 14s 10s 5s 11s 'First Name' 'Last Name' 'ID'.. 10s 5s 3s fname self.lname i self.ID i self.sport i def Table self print self.lname class Database Student def __init__ self..
Convert sqlalchemy row object to python dict http://stackoverflow.com/questions/1958219/convert-sqlalchemy-row-object-to-python-dict 'sqlite memory ' echo False metadata MetaData users_table Table 'users' metadata Column 'id' Integer primary_key True Column..
MySQL “incorrect string value” error when save unicode string in Django http://stackoverflow.com/questions/2108824/mysql-incorrect-string-value-error-when-save-unicode-string-in-django usr share mysql charsets 8 rows in set 0.00 sec Table charset and collation Table auth_user has utf 8 charset with.. 8 rows in set 0.00 sec Table charset and collation Table auth_user has utf 8 charset with utf8_general_ci collation...
Single Table Inheritance in Django http://stackoverflow.com/questions/241250/single-table-inheritance-in-django Table Inheritance in Django Is there explicit support for Single.. in Django Is there explicit support for Single Table Inheritance in Django Last I heard the feature was still under..
How to discover table properties from SQLAlchemy mapped object http://stackoverflow.com/questions/2441796/how-to-discover-table-properties-from-sqlalchemy-mapped-object this question Information you need you can get from Table object Ship.__table__.columns will provide you with columns..
Which is faster in Python: x**.5 or math.sqrt(x)? http://stackoverflow.com/questions/327002/which-is-faster-in-python-x-5-or-math-sqrtx 0.125 3 Python 2.4.6 0.131 0.123 7 # TBLFM 4 100 2 3 3 .0f Table results produced on machine uname vms Linux #42 Ubuntu SMP Thu..
SQLAlchemy declarative syntax with autoload (reflection) in Pylons http://stackoverflow.com/questions/4526498/sqlalchemy-declarative-syntax-with-autoload-reflection-in-pylons using any of the tables or classes in the model t_events Table 'events' Base.metadata schema 'events' autoload True autoload_with.. No engine is bound to this Table's MetaData. Pass an engine to the Table via autoload_with someengine.. is bound to this Table's MetaData. Pass an engine to the Table via autoload_with someengine or associate the MetaData with..
Why don't my south migrations work? http://stackoverflow.com/questions/4840102/why-dont-my-south-migrations-work gives me this error... django.db.utils.DatabaseError 1146 Table 'fable.south_migrationhistory' doesn't exist So I use Google.. gives me this BS _mysql_exceptions.OperationalError 1050 Table 'wall_content' already exists Sorry this is really pissing me..
SQLAlchemy - Dictionary of tags http://stackoverflow.com/questions/780774/sqlalchemy-dictionary-of-tags proxy from sqlalchemy import Column Integer String Table create_engine from sqlalchemy import orm MetaData Column ForeignKey.. True meta MetaData bind engine Define the tables tb_items Table 'items' meta Column 'id' Integer primary_key True Column 'name'.. 'name' String 20 Column 'description' String 100 tb_notes Table 'notes' meta Column 'id_item' Integer ForeignKey 'items.id'..
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