5-6:人生的不同阶段
age = input() if age < 2: print("baby") elif age < 4: print("kid") elif age < 13: print("children") elif age < 20: print("Teenagers") elif age < 65: print("Adult") else: print("Old people")
5-7:喜欢的水果
fruits = ["Apple","Orange","Peach"] fruits1 = ["Banana","Apple","Peach","Pear","Orange"] i = 0 while i < 5: if fruits1[i] in fruits: print("You really like "+ fruits1[i] + " !") i = i + 1
5-11:序数
numbers = list(range(1,10)) for number in numbers: if number == 1: print(str(number)+"st") elif number == 2: print(str(number)+"nd") elif number == 3: print(str(number)+"rd") else: print(str(number)+"th")
6-5:河流
rivers = { 'Nile': 'Egypt', 'Amazon': 'Brazil', 'Chang jiang': 'China' } for river in rivers.keys(): print(river) print(rivers[river]) print("The "+ river + " runs through " + rivers[river] + ".")
6-11:城市
cities = {} cities["Xi'an"] = {"country":"China","population":"100 billions","fact":"beautiful"} cities["Guangzhou"] = {"country":"China","population":"200 billions","fact":"developed"} cities["NewYork city"] = {"country":"America","population":"400 billions","fact":"big"} for city in cities.keys(): print(city) for c in cities[city].keys(): print(c+" : "+cities[city][c])