# 介绍 [](https://github.com/CoderAngle/python3-spider-note) 爬虫笔记地址:[https://xintiaohuiyi.gitbook.io/python3-spider-note/](https://xintiaohuiyi.gitbook.io/python3-spider-note/) python使用版本:python3 \(python3网络爬虫开发实战笔记\) ## pip换源 ```text pip源: 豆瓣：http://pypi.douban.com/simple/ 清华：https://pypi.tuna.tsinghua.edu.cn/simple ``` ### 第一种:暂时性换源 有时候pip下载速度有点慢，可以换成国内源提升一下速度 ```text pip install -i https://pypi.doubanio.com/simple/ 包名 pip install -i https://pypi.doubanio.com/simple/ flask ``` ### 第二种:永久换源 永久换源的方法如下: linux下，修改 ~/.pip/pip.conf \(没有就创建一个\)， 修改 index-url，内容如下： ```text [global] index-url = https://pypi.tuna.tsinghua.edu.cn/simple ``` windows下，直接在用户目录中创建一个pip目录，如：C:\Users\miku\pip，新建文件pip.ini，内容如下 ```text [global] index-url = https://pypi.tuna.tsinghua.edu.cn/simple ```  ## IDE工具 为了提升编码速度，需要好的编译器，推荐使用pycharm 以下是pycharm破解,使用2017版本就可以了 ```text http://idea.lanyus.com/ -javaagent: E:\JetBrains\WebStorm 2018.1\lib\JetbrainsCrack-2.7-release-str ThisCrackLicenseId-{ "licenseId":"ThisCrackLicenseId", "licenseeName":"idea", "assigneeName":"", "assigneeEmail":"idea@163.com", "licenseRestriction":"For This Crack, Only Test! Please support genuine!!!", "checkConcurrentUse":false, "products":[ {"code":"II","paidUpTo":"2099-12-31"}, {"code":"DM","paidUpTo":"2099-12-31"}, {"code":"AC","paidUpTo":"2099-12-31"}, {"code":"RS0","paidUpTo":"2099-12-31"}, {"code":"WS","paidUpTo":"2099-12-31"}, {"code":"DPN","paidUpTo":"2099-12-31"}, {"code":"RC","paidUpTo":"2099-12-31"}, {"code":"PS","paidUpTo":"2099-12-31"}, {"code":"DC","paidUpTo":"2099-12-31"}, {"code":"RM","paidUpTo":"2099-12-31"}, {"code":"CL","paidUpTo":"2099-12-31"}, {"code":"PC","paidUpTo":"2099-12-31"} ], "hash":"2911276/0", "gracePeriodDays":7, "autoProlongated":false} ``` [下载地址](https://pan.baidu.com/s/1si1u-15AhTkWq2bRdkascQ ) 密码：v97f ## Linux中切换python版本 首先先来看一下我们的默认Python版本 ```text $ python --version Python 2.7.6 ``` 然后我们修改一下别名 ```text $ alias python='/usr/bin/python3' $ python --version Python 3.4.3 # 版本已经改变 ```