python字符串连接方式汇总
在python中有很多字符串连接方式，今天就在这里具体总结一下：
①.最原始的字符串连接方式：str1 + str2
②.python 新字符串连接语法：str1, str2
③.奇怪的字符串方式：str1 str2
④.% 连接字符串：‘name:%s; sex: ' % ('tom', 'male')
⑤.字符串列表连接：str.join(some_list)
下面具体分析一下：
第一种，想必只要是有编程经验的人，估计都知道，直接用 “+” 来连接两个字符串：
'Jim' + 'Green' = 'JimGreen'
第二种比较特殊，如果两个字符串用“逗号”隔开，那么这两个字符串将被连接，但是，字符串之间会多出一个空格：
'Jim', 'Green' = 'Jim Green'
第三种也是 python 独有的，只要把两个字符串放在一起，中间有空白或者没有空白：两个字符串自动连接为一个字符串：
'Jim''Green' = 'JimGreen' 'Jim' 'Green' = 'JimGreen'
第四种功能比较强大，借鉴了C语言中 printf 函数的功能，如果你有C语言基础，看下文档就知道了。这种方式用符号“%”连接一个字符串和一组变量，字符串中的特殊标记会被自动用右边变量组中的变量替换：
'%s, %s' % ('Jim', 'Green') = 'Jim, Green'
第五种就属于技巧了，利用字符串的函数 join 。这个函数接受一个列表，然后用字符串依次连接列表中每一个元素：
var_list = ['tom', 'david', 'john'] a = '###' a.join(var_list) = 'tom###david###john'
其实，python 中还有一种字符串连接方式，不过用的不多，就是字符串乘法，如：
a = 'abc' a * 3 = 'abcabcabc'
希望本文所述示例对大家的Python程序设计能有一定的帮助。
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