#2.1 print("Hello world!"); #2.2 message="Hello,Python!"; print(message); #2.3 name="tian jiale"; print(name+",would you like to learn some Python today?"); #2.4 #小写 print(name.lower()+",would you like to learn some Python today?"); #大写 print(name.upper()+",would you like to learn some Python today?"); #首字母大写 print(name.title()+",would you like to learn some Python today?"); #2.5 name="Myself"; message='"Study makes me happy,study is resoure of my happiness!"'; print(name+" once said,"+message); #2.6 famous_person="Myself"; print(famous_person+" once said,"+message); #2.7 name=" Myself "; print(name); print(name.lstrip()+" once said,"+message); print(name.rstrip()+" once said,"+message); print(name.strip()+" once said,"+message); #2.8 print(5+3); print(8-0); print(2*4); print(int(16/2)); #2.9 """ 这是一个注释 而且是多行注释 这个程序的目的就是为了演示注释 """ print("这个程序的目的就是为了演示注释!"); #2.10 import this