December 2000
Intermediate to advanced
816 pages
16h 57m
English
Content preview from Core Python Programming
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6.14. Special Features of Lists
6.14.1. Creating Other DataStructures Using Lists
Because of their container and mutable features, lists are fairly flexible and it is not very difficult to build other kinds of data structures using lists. Two that we can come up with rather quickly are stacks and queues.
The two code samples in this section use the pop() method which became reality in Python 1.5.2. If you are using an older system, this function is easily duplicated in Python. (See Exercise 6-17.)
Stack
A stack is a last-in-first-out (LIFO) data structure which works similar to a cafeteria dining plate spring-loading mechanism. Consider the plates as objects. The first object off the stack is the last one you put in. Every new object gets ...
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