guilanl的专栏

zipfile 模块用于在python 中做压缩、解压缩。下面是一个例子：#/usr/bin/python3import osimport timeimport zipfilesource_dir = "/home/guilan/development/algorithm"filename = "/home/guilan/development/pytho

切片操作：对于具有序列结构的数据来说，切片操作的方法是：consequence[start_index: end_index: step]。start_index：表示是第一个元素对象，正索引位置默认为0；负索引位置默认为 -len(consequence)end_index：表示是最后一个元素对象，正索引位置默认为 len(consequence)－1；负索引位置默认为

Python3 的urllib 包含三个部分：urllib is a package that collects several modules for working with URLs:urllib.request for opening and reading URLsurllib.error containing the exceptions raised by u

Today, we cover a handful of the built-in functions with Python 3. For a full list, see: https://docs.python.org/3/library/functions.htmlWe cover absolute value (abs()), the help() functions, max(

Python 学习，请参考这个网站：https://pythonprogramming.net/很多专题，每个都有视频，我觉得讲得不错。Python 中的 正则表达式 （Regular Expression）的模块是： re正则表达式中常见的各种rule:Identifiers:\d = any number\D = an

DescriptionThe method walk() generates the file names in a directory tree by walking the tree either top-down or bottom-up.SyntaxFollowing is the syntax for walk() method:os.walk(top[, top

This Python 3 tutorial covers how to read CSV data in from a file and then use it in Python. For this, we use the csv module. CSV literally stands for comma separated variable, where the comma is what