def cap_string(sentence):
sentence=‘ ‘.join([i.title() for i in sentence.split()])
return sentence
s=‘‘‘Python is a programming language that lets you work quickly and integrate systems more effectively‘‘‘ print cap_string(s)
输出：
Python Is A Programming Language That Lets You Work Quickly And Integrate Systems More Effectively
给定一个英文句子（一个只有字母的字符串），将句中所有单词变为有且只有首字母大写
原文：http://www.cnblogs.com/laresh/p/6091288.html