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2 sequential dictionaries for python

Wolfgang Grafen wolfgang.grafen at de.bosch.com
Mon Jul 26 08:17:16 EDT 1999 
26.7.1999 

Package seqdict 

seqdict - single value dictionary 
msedict - multiple value dictionary 

The Python built-in dictionary has no reliable sequence order because
of performance reasons. 

The two new dictionaries introduced here keep their entries in sequence. 

* seqdict keeps one value for one key 
* mseqdict keeps multiple values per key and is the closest emulation 
  of areal world dictionary. 

As the sequential dictionary is a combination of a list and a dictionary
you can do most operations defined with lists as well and much more. 

Now you can slice, add, sort with dictionaries. The functional
operations 
map, filter, reduce are implemented as well. Use a dictionary like a
stack 
with push and pop. Split it, reverse it and swap keys and values. 

A small tutorial is provided as HTML and Postscript Source and is
subject
to become improved some other day. 

I think both dictionaries are candidates for the python standard
library. 

Use the seqdicts to emulate a printed dictionary. Use them for workinse 
them for working with csv-tables. Keep parsed code in a seqdict, modify
it
and write it back ... 

Download from 
http://www.germany.net/teilnehmer/100,366919/Python/Modules/Modules.html

Wolfgang Grafen 
mailto:WolfgangGrafen at gmx.de
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