Tips

1、Md5加密 & Base64编解码
#! /usr/bin/env python
# -*- coding: utf-8 -*-

import md5
from base64 import b64encode,b64decode
print(md5.md5('123456').hexdigest())
print(b64encode('123456'))
print(b64decode('MTIzNDU2'))

2、字典生成
#! /usr/bin/env python
# -*- coding: utf-8 -*-

users = ['tomcat', 'admin', 'test']
passwds = ['tomcat', 'admin', 'administrator', 'system','123', '1234', '12345', '123456', 'test', 'qazwsx', 'qwert'
, 'qwert', 'qwerty', '12345678', '000000', '6666', '666666', '8888', '888888']
for user in users:
for passwd in passwds:
print(user + ':' + passwd)

3、字符串
Python 字符串操作（string替换、删除、截取、复制、连接、比较、查找、包含、大小写转换、分割等）

去空格及特殊符号:s.strip().lstrip().rstrip(',')
连接字符串:
sStr1 = 'strcat'
sStr2 = 'append'
sStr1 += sStr2
print sStr1

查找字符:
# < 0 为未找到
sStr1 = 'strchr'
sStr2 = 's'
nPos = sStr1.index(sStr2)
print nPos

比较字符串:
#strcmp(sStr1,sStr2)
sStr1 = 'strchr'
sStr2 = 'strch'
print cmp(sStr1,sStr2)

扫描字符串是否包含指定的字符:
#strspn(sStr1,sStr2)
sStr1 = '12345678'
sStr2 = '456'
#sStr1 and chars both in sStr1 and sStr2
print len(sStr1 and sStr2)

字符串长度:
sStr1 = 'strlen'
print len(sStr1)

将字符串中的大小写转换:
#strlwr(sStr1)
sStr1 = 'JCstrlwr'
sStr1 = sStr1.upper()
#sStr1 = sStr1.lower()
print sStr1

追加指定长度的字符串:
#strncat(sStr1,sStr2,n)
sStr1 = '12345'
sStr2 = 'abcdef'
n = 3
sStr1 += sStr2[0:n]
print sStr1

字符串指定长度比较:
#strncmp(sStr1,sStr2,n)
sStr1 = '12345'
sStr2 = '123bc'
n = 3
print cmp(sStr1[0:n],sStr2[0:n])

复制指定长度的字符:
#strnset(sStr1,ch,n)
sStr1 = '12345'
ch = 'r'
n = 3
sStr1 = n * ch + sStr1[3:]
print sStr1

扫描字符串:
#strpbrk(sStr1,sStr2)
sStr1 = 'cekjgdklab'
sStr2 = 'gka'
nPos = -1
for c in sStr1:
if c in sStr2:
nPos = sStr1.index(c)
break
print nPos

翻转字符串:
#strrev(sStr1)
sStr1 = 'abcdefg'
sStr1 = sStr1[::-1]
print sStr1

查找字符串
#strstr(sStr1,sStr2)
sStr1 = 'abcdefg'
sStr2 = 'cde'
print sStr1.find(sStr2)

分割字符串
#strtok(sStr1,sStr2)
sStr1 = 'ab,cde,fgh,ijk'
sStr2 = ','
sStr1 = sStr1[sStr1.find(sStr2) + 1:]
print sStr1
#或者
s = 'ab,cde,fgh,ijk'
print(s.split(','))

连接字符串
delimiter = ','
mylist = ['Brazil', 'Russia', 'India', 'China']
print delimiter.join(mylist)

PHP 中 addslashes 的实现
def addslashes(s):
d = {'"':'\"', "'":"\'", "":"\", "\":"\\"}
return ''.join(d.get(c, c) for c in s)

s = "John 'Johny' Doe (a.k.a. "Super Joe")\"
print s
print addslashes(s)

只显示字母与数字
def OnlyCharNum(s,oth=''):
s2 = s.lower();
fomart = 'abcdefghijklmnopqrstuvwxyz0123456789'
for c in s2:
if not c in fomart:
s = s.replace(c,'');
return s;

print(OnlyStr("a000 aa-b"))

截取字符串
str = ’0123456789′
print str[0:3] #截取第一位到第三位的字符
print str[:] #截取字符串的全部字符
print str[6:] #截取第七个字符到结尾
print str[:-3] #截取从头开始到倒数第三个字符之前
print str[2] #截取第三个字符
print str[-1] #截取倒数第一个字符
print str[::-1] #创造一个与原字符串顺序相反的字符串
print str[-3:-1] #截取倒数第三位与倒数第一位之前的字符
print str[-3:] #截取倒数第三位到结尾
print str[:-5:-3] #逆序截取，具体啥意思没搞明白？