执行从/path/to/filename.zip中提取的__main__.py中的代码。 Zip 是一种面向端的格式:元数据和指向数据的指针都在末尾。这意味着向 zip 文件添加前缀不会改变其内容。 因此,如果我们获取一个 zip 文件,并给它加上前缀#!/usr/bin/python<newline>,并将其标记为可执行,那么当运行它时,Python 将会运行一个...
1def table_things(titlestring, **kwargs) 2 *args和**kwargs可以同时在函数的定义中,但是*args必须在**kwargs前面.当调用函数时你也可以用*和**语法.例如: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 1>>> def print_three_things(a, b, c): 2... print 'a = {0}, b = {1},...
python数据分析03Python的数据结构、函数和文件 我们会从Python最基础的数据结构开始:元组、列表、字典和集合。然后会讨论创建你自己的、可重复使用的Python函数。最后,会学习Python的文件对象,以及如何与本地硬盘交互。 3.1 数据结构和序列 Python的数据结构简单而强大。通晓它们才能成为熟练的Python程序员。 元组 元组是...
ZipFile objects are similar to file objects created using open(). ZipFile is also a context manager and therefore supports the with statement:Python import zipfile with zipfile.ZipFile('data.zip', 'r') as zipobj: Here, you create a ZipFile object, passing in the name of the ZIP ...
26、zip()、tuple()、dict()、translate()、eval() characters = ('S', 'M', 'E', 'D', 'O', 'N', 'R', 'Y') guess = ('1', '2', '0', '3', '4', '5', '6', '7') tuple(zip(characters, guess)) (('S', '1'), ('M', '2'), ('E', '0'), ('D', '...
Once you’ve downloaded the .zip file, unzip the file to a folder called groupby-data/ in your current directory. Before you read on, ensure that your directory tree looks like this:./ │└── groupby-data/ │ ├── legislators-historical.csv ├── airqual.csv └── news.csv ...
zip 的常见用法之一是同时迭代多个序列,可能结合 enumerate 使用: In [95]: for i, (a, b) in enumerate(zip(seq1, seq2)): ...: print('{0}: {1}, {2}'.format(i, a, b)) ...: 0: foo, one 1: bar, two 2: baz, three 给出一个“被压缩的”序列, zip 可以被用来解压序列。
unzip.py - Unzip file, also see zip version.py - Show StaSh installation and version information wc.py - Line, word, character counting webviewer.py - Open a url in the webbrowser wget.py - get data from the net whatis.py - Show a description for some of the commands which.py - ...
Although a few lines of code can accomplish a lot in Python, sooner or later you’re going to find your program’s codebase is growing...and, when it does, things quickly become harder to manage. What started out as 20 lines of Python code has somehow ballooned to 500 lines or more...
The _ZipDecryptor class maintains state in the form of three rotating keys, which are later updated in the _UpdateKeys() method (not shown here). The class defines a __call__() method, which makes class instances callable like functions. In this case, the __call__() method decrypts...