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Data Python scripts

Grouping objects into disjoint sets

... together into disjoint sets when a full-blown graph data structure would be overkill. Objects can be joined using .join(), tested for connectedness using joined(), and all disjoint sets can be retreived using get(). The objects being joined must be hashable. ...
Python

Personal Finance Assistance

... record all your daily expenses. It stores all data in SQLite.The program is menu-based program which can connect to database and then performming addition, updating, deletion and showing the summary. ...
Python

Null Object Design Pattern

... an 'intelligent' replacement for the often used primitive data type None in Python or Null (or Null pointers) in other languages. These are used for many purposes including the important case where one member of some group of otherwise similar elements is special for whatever reason. Most often this results ...
Python

Constellation Finder

The script demonstrates the use of SETs in Python. There is a key object that has constellations already identified and a stars object that contains the stars in the sky. Keys are used to unlocks the stars and the results are printed out for the user of the program. ...
Python

Improved TemporaryFile

This script allows a temporary file implementation that uses memory unless either capacity is breached or fileno is requested, at which point a real temporary file will be created and the relevant details returned. ...
Python

Resuming download of a file

... that we only want a certian range of data to be downloaded. The server must support this, but this is part of the HTTP1.1 spec, so it should be widely supported.I essentially use the urllib.FancyURLopener to do all the dirty work of adding a new header and doing the normal ...
Python

Copying and Pasting Directories and Files

... is not a directory or a file. The data returned from copy_dir() is in a format that paste_dir() can understand. A design note: what you get back from copy_dir() may be different whether or not you have a path separator at the end of the path; paste_dir() makes use of ...
Python

min max peaks with Numeric

... and max for each block, the so-called "peaks data". ...
Python

Pivot Crosstab Denormalization of Normalized List

This script shows you a function that creates a cross-tab or pivot table from a normalised input table. You can use this function to 'denormalize' a table of normalized records. ...
Python

Create an ODBC data source

... ctypes module, this script creates the required ODBC data sources when you install database applications that use ODBC. Requirements: · ctypes ...
Python

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