- 时间:2018-11-22 整理:byzqy
python读写文本文件
1 # -*- coding: utf-8 -*- 2 3 def read_file(file): 4 with open(file, 'r') as f: 5 print(f.read()) 6 f.close() 7 8 def write_file(file): 9 with open(file, 'a') as f: 10 for i in range(10): 11 f.write(str(i) + ' ') 12 f.close() 13 14 file = 'test.txt' 15 write_file(file) 16 read_file(file)
转自:https://blog.csdn.net/u010429424/article/details/76136727
python字符串拼接
1 # python中字符串拼接的方法 2 3 # 1. 加号 4 print 'Python' + 'Tab' 5 ==>PythonTab 6 7 # 2. 逗号 8 print 'Python','Tab' 9 ==>Python Tab 10 11 # 3. 直接连接 12 print 'Python''Tab' 13 ==>PythonTab 14 print 'Python' 'Tab' 15 ==>PythonTab 16 17 # 4. 格式化 18 print '%s %s'%('Python', 'Tab') 19 ==>Python Tab 20 21 # 5. join 22 str_list = ['Python', 'Tab'] 23 a = '' 24 print a.join(str_list) 25 ==>PythonTab 26 27 # 6. 多行字符串拼接() 28 s = ('select *' 29 'from atable' 30 'where id=888') 31 print s, type(s) 32 ==>select *from atablewhere id=888 <type 'str'> 33 34 # 7. 使用单引号(''' ''')或者双引号(""" """) 35 name = input("Please input your name: ") 36 age = input("Please input your age: ") 37 sex = input("Please input your sex: ") 38 39 message = ''' 40 Information of %s: 41 Name:%s 42 Age:%s 43 Sex:%s 44 '''%(name,name,age,sex) 45 print(message) 46 ==>Information of Alex: 47 Name:Alex 48 Age:38 49 Sex:girl
源自:https://www.cnblogs.com/bigtreei/p/7892113.html
源自:http://www.cnblogs.com/gengcx/p/6710914.html
python字符串操作之字符串分割
1 #定义一个字符串str1 2 >>> str1 = "3w.gorly.test.com.cn" 3 4 #使用默认分隔符分割字符串str1 5 >>> print str1.split() 6 ['3w.gorly.test.com.cn'] 7 8 #指定分隔符为'.',进行分割字符串str1 9 >>> print str1.split('.') 10 ['3w', 'gorly', 'test', 'com', 'cn'] 11 12 #指定分隔符为'.',并且指定切割次数为0次 13 >>> print str1.split('.',0) 14 ['3w.gorly.test.com.cn'] 15 16 #指定分隔符为'.',并且指定切割次数为1次 17 >>> print str1.split('.',1) 18 ['3w', 'gorly.test.com.cn'] 19 20 #指定分隔符为'.',并且指定切割次数为2次 21 >>> print str1.split('.',2) 22 ['3w', 'gorly', 'test.com.cn'] 23 24 #这种分割等价于不指定分割次数str1.split('.')情况 25 >>> print str1.split('.',-1) 26 ['3w', 'gorly', 'test', 'com', 'cn'] 27 28 #指定分隔符为'.',并取序列下标为0的项 29 >>> print str1.split('.')[0] 30 3w 31 32 #指定分隔符为'.',并取序列下标为4的项 33 >>> print str1.split('.')[4] 34 cn
转自:https://www.cnblogs.com/justdo-it/articles/8297303.html (转)
python操作yaml文件
转自:https://blog.csdn.net/lmj19851117/article/details/78843486(python yaml用法详解)
参考:https://blog.csdn.net/legendary_Dragon/article/details/80927881(如何安装Python的yaml包)
python操作json文件
转自:https://www.cnblogs.com/tjuyuan/p/6795860.html(python json模块 超级详解)
python实现计算机屏幕水印
地址:https://blog.csdn.net/kk185800961/article/details/79296315
利用Python爬取网页图片
地址:https://www.cnblogs.com/dearvee/p/6558571.html
python爬虫
地址:https://blog.csdn.net/jsmok_xingkong/article/details/78448932
地址:https://blog.csdn.net/csqazwsxedc/article/details/68498842
python爬虫常用第三方库
地址:https://blog.csdn.net/woshisunchi/article/details/60877817
[python]pip常用命令
地址:https://www.cnblogs.com/xueweihan/p/4981704.html
非官方的Windows二进制文件Python扩展包(★★★★☆)
地址:https://www.lfd.uci.edu/~gohlke/pythonlibs/
Python正则表达式指南
地址:http://www.cnblogs.com/huxi/archive/2010/07/04/1771073.html
Python的.py文件打包成exe可执行文件
地址:https://www.cnblogs.com/dearvee/p/6580370.html
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