参考：geeokori

https://mp.weixin.qq.com/s/bJiP5NwZ8fvDw0aPp49wbA

方法1：使用capitalize()

#输入英文句子
s='''1999 cyberspace electronic security act
2002 cyber security research and development act
2002 networking and information technology research and advancement act.'''

print(" ".join([word.capitalize() for word in s.split()]))

#运行结果
# 1999 Cyberspace Electronic Security Act
# 2002 Cyber Security Research And Development Act
# 2002 Networking And Information Technology Research And Advancement Act.

方法2：使用string中的capwords()模块

import string
s=''' '''
print(string.capwords(s)}