python随笔

一，安装模块

windows环境下安装模块

直接在CMD里面，运行命令： pip install paramiko,   删除命令，pip uninstall paramiko

 用python连接linux,然后运行命令：

import paramiko

hostname='192.168.1.112'
username='root'
password='123456'
ssh = paramiko.SSHClient()

ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect("192.168.1.112",22,"root","123456")
stdin,stdout,stderr = ssh.exec_command("ls")
print (stdout.read())
ssh.close()

注意：：python2.X版本的print与python3.X版本的print不一样。
python2.x       >>> print 'hello world' 
python3.x       >>> print ("hello world")
设置linux主机网卡为本地自定义模式

二，对EXcel表格的操作

#coding:utf-8
import xlsxwriter
#1，创建一个excel文件
work = xlsxwriter.Workbook("yao.xlsx")
#2，在eccel文件里面创建一个表格
worksheet = work.add_worksheet("test1")
#3，修改内容格式
    #1,表格的格式，宽度
worksheet.set_column("A:A",20)
    #2，内容的格式，
bold=work.add_format({"bold":True})
#4,写入内容
   #1,写入字符
worksheet.write("A1","hello,world!!!!",bold)
###2，写入图片
worksheet.insert_image("A2","1.jpg")
  ###3,写入函数
worksheet.write("A3",2,bold)
worksheet.write("A4",3,bold)
worksheet.write("A5","=SUM(A3:A4)",bold)

work.close()
'''
#coding:utf-8
import xlsxwriter
#1，创建一个excel文件
work = xlsxwriter.Workbook("zhao.xlsx")
#2,创建图表
chart = work.add_chart({'type':'column'})
   #column 柱状图 area 面积图  bar 条形图  line 折线图  radar 雷达图
   #注意不可以插入空的图表
#2，在eccel文件里面创建一个表格
worksheet = work.add_worksheet()
#3，添加数据
title = "abcdefghi"
data = [1,23,23,34,445,56,78,55,23]

for i,j in enumerate(title):
    print(i,j)
    point = "A%d"%(i+1)
    worksheet.write_string(point,j)

for i,j in enumerate(data):
    point = "B%d"%(i+1)
    worksheet.write(point,j)
#4,为图表添加数据
chart.add_series(
    {
        "categories":"=Sheet1!$a$1:$a$9", #类别标签的范围
        "values":"=Sheet1!$b$1:$b$9",  #图标数据的范围
        "line":{"color":"red"}          #图标线条的属性
    }
)
worksheet.insert_chart("A10",chart)
work.close()

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三，python运行linux命令的两种方法

import os
import subprocess

os.system('ls')
subprocess.call('df -h'.split())

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四，

如何在已经存在python2的linux环境上安装python3

引用文章：http://www.cnblogs.com/CongZhang/p/5619093.html

下载官方地址：https://www.python.org/downloads/release/python-361/

[root@localhost install]# wget https://www.python.org/ftp/python/3.4.4/Python-3.4.4.tgz [root@localhost install]# tar -zxf Python-3.4.4.tgz [root@localhost install]# cd Python-3.4.4 # 在安装包中有一个README的文件，里面有写如何安装 [root@localhost Python-3.4.4]# ls aclocal.m4 config.sub configure.ac Grammar install-sh LICENSE Makefile.pre.in Modules Parser PCbuild Python setup.py config.guess configure Doc Include Lib Mac Misc Objects PC pyconfig.h.in README Tools [root@localhost Python-3.4.4]# ./configure [root@localhost Python-3.4.4]# make [root@localhost Python-3.4.4]# make install

五，python3里面的print语法已经变了:

      格式为：print("Error:'%s' already exits"%(fname))