# 2-1 msg = "aa" print(msg)
# 2-2 msg = 'aaa' print(msg) msg = 'bbb' print(msg)
#2-3 name = "Control_xu" print("Hello " + name + ", how are you?")
#2-4 name = 'Donald trump' print(name.upper()) print(name.lower()) print(name.title()) # 2-5 and 2-6 name = "雷锋" msg = '为人民服务' print(name +' once said,"' + msg + '."') # 2-7 name = '\t Donald Trump \n' print(name) print(name.strip()) print(name.lstrip()) print(name.rstrip())
# 2-8 # 输出4个8 print(1+7) print(2*4) print(round(16/2)) print(9-1) # 2-9 my_favorite_num = 0.66666 print("my favorite number is " + str(my_favorite_num))