零基础python教程：字符串

1、a = "This is a string";

b = 'This is a string';
着两种声明没有任何区别，着和c的语法不同。c中的单引号代表一个字符；

1、a = "This is a string";

b = 'This is a string';
c = a[5:];
d = b[1:2];
print c;
print d;
print c + d;

1、# -*- coding: utf-8 -*-

a = "This is a string";
if "is" in a:
   print "[1] is in String"
else:
   print "is not in String"
print a.find("iss"),a.find("is")

1、a = "This is a string";

b = 1
c = 1.2312
d = "%s,%d,%.2f" % (a, b, c)
print d;

1、Python 中定义一个 Unicode 字符串和定义一个普通字符串一样简单：

a =  u'this is unicode string !'

print a;

引号前小写的"u"表示这里创建的是一个 Unicode 字符串。