Free Python Scripts

This script allows you a fast, lightweight attribute-style access to tuples. It contains a function that returns a new subclass of tuple with named fields.

to tuples. It contains a function that returns a new subclass of tuple with named fields.

The principal features are:

• Easy to type/read/modify function signature: NamedTuple(’Person’, ‘name age sex height nationality’) 
• C-speed attribute lookup using property and itemgetter.
• No instance dictionary means that instances take no more space than a regular tuple. 
• Nice docstring is helpful with an editor’s tooltips. 
• Optional keywords in the contructor for readability and to allow variable order of specifying arguments: Person(name=’susan’, height=60, nationality=’english’, sex=’f', age=30). 
• Key/Value style repr for clearer error messages and for usability at the interactive prompt. 
• Named tuples are picklable.
• Clean error messages for missing or misnamed arguments. 
• A method similar to str.replace() using a field name (used instead of slicing for updating fields — instead of t[:2]+newval+t[3:], write t.replace(’f',newval)).

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