Learning Python nodrm by Learning Python 2nd Edition

Author:Learning Python, 2nd Edition
Language: eng
Format: azw3
Published: 2021-02-15T06:32:16.831000+00:00

11. Practical Python

341

SUMMARY

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Stacks can be implemented using list.append() and list.pop() methods.

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Queues can be implemented using deque.append() and

deque.popleft() methods.

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The map() function maps each element of a sequence to another using a mapping function. It can also be used to map multiple corresponding elements of sequences into a single corresponding element of a target sequence using a mapping function.

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The filter() function filters a sequence using a filtering function, allowing only certain values to pass through. As a special case, if no filtering function is provided, all True values pass through and False values are filtered out. The itertools.filterfalse() function does the reverse!

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The reduce() function reduces a sequence into a single value using a reducing function which takes in 2 parameters – an accumulated value (0 by default) and an element from the given sequence.

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List comprehensions are powerful mechanisms to create and populate lists with required values. They eliminate the need for elaborate lines of code to populate lists!

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