January 2018
Intermediate to advanced
856 pages
17h 17m
Chinese
Content preview from Python 技術手冊 第三版
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第 7 章 核心內建功能和標準程式庫模組
zip zip(seq,*seqs)
在 v2 中，回傳元組所成的一個串列（ a list of tuples），其中第
n
個元
組含有來自各個引數序列的第
n
個元素。
zip
至少必須以一個引數呼叫，
而所有的引數都必須是可迭代的（iterable）。如果那些 iterables 的長
度不同，
zip
會回傳長度與最短的 iterable 相同的一個串列，忽略其他
可迭代物件尾端的項目。也請參閱本表中的
map
，以及表 7-5 中的
izip_
longest
。在 v3 中，
zip
會回傳一個迭代器（iterator），而非一個串列，因
此它等同於一個產生器運算式（generator expression），而非一個串列概
括式（list comprehension）。
sys 模組
sys
模組的屬性所繫結的資料與函式，提供了 Python 直譯器（interpreter）
的或會直接影響到直譯器的狀態資訊。表 7-3 涵蓋了
sys
最常被使用的
屬性，以字母順序列出。我們沒有涵蓋的大多數屬性都是特別要給除錯
器（debuggers）、效能側寫器（profilers）與整合開發環境（integrated
development environments）使用的，更多資訊請參閱線上文件（
https://
docs.python.org/3/library/sys.html
）。平台特定的資訊最好是使用
platform
模組來取用，涵蓋於線上文件（
https://docs.python.or ...
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