centos7.4.1708 重装yum和python和wxpy的一次旅行

在linux下折腾wxpy，想着尝试给小聪子发送信息，一直失败，后来误删了pyhon特定文件，无奈，只有重投开始搞

1、yum是用python写的

2、删除pyhon

rpm -qa|grep python|xargs rpm -ev --allmatches --nodeps ##强制删除已安装程序及其关联
whereis python |xargs rm -frv ##删除所有残余文件 ##xargs，允许你对输出执行其他某些命令
whereis python ##验证删除，返回无结果

3、删除yum

rpm -qa|grep yum|xargs rpm -ev --allmatches --nodeps
whereis yum |xargs rm -frv

4、在/usr/local/src下创建yum和python用于存放python包

cd /usr/local/src/python

wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/python-2.7.5-58.el7.x86_64.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/python-pycurl-7.19.0-19.el7.x86_64.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/dbus-python-devel-1.1.1-9.el7.x86_64.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/python-libs-2.7.5-58.el7.x86_64.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/python-urlgrabber-3.10-8.el7.noarch.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/rpm-python-4.11.3-25.el7.x86_64.rpm

安装执行：
rpm -ivh python-*   rpm-python-* --nodeps --force

cd  /usr/local/src/yum

wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/yum-3.4.3-154.el7.centos.noarch.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
wget http://vault.centos.org/7.4.1708/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-42.el7.noarch.rpm

安装执行：
rpm -ivh yum-*

5、centos安装pip

sudo yum -y install epel-release
sudo yum -y install python-pip

6、centos下使用pip安装wxpy

pip install wxpy

 7、调用wxpy的say_hi_lady.py

#! /usr/bin/python
# -*- coding: UTF-8 -*-
import commands
import sys
import hashlib
import os
import json

reload(sys)
sys.setdefaultencoding('utf8')

from wxpy import *
bot = Bot()

my_girl_friend = bot.friends().search('小聪子')[0]
my_girl_friend.send('Hello WeChat!')

发现一直报错：

 解答：FileNotFoundError为python3使用的文本不存在异常处理方法；在python2.7中使用IOError。这里需要调整