第一章练习题

1.1str1 = input("请输入一个人的名字:") str2 = input("请输入一个国家名字:") print("世界这么大,{}想去{}看看 .".format(str1,str2))
1.2n = input("请输入整数 N:") sum = 0 for i in range(int(n)): sum += i + 1 print("1 到 N 之和 :", sum)
1.3for i in range(1,10): for j in range(1,i+1): print("{}*{}={:2} ".format(j,i,i*j), end='') print('')
1.4sum, tmp = 0, 1 for i in range(1,11): tmp *= i sum += tmp print("运算结果是 : {}".format(sum))
1.5diet = ['西红柿 ','花椰菜 ','黄瓜 ','牛柳 ', '虾仁 '] for x in range(0, 5): for y in range(0, 5): if not(x == y): print("{} 炒 {}".format(diet[x], diet[y]))
1.6import random name = input("请输入名字:") lucky = 1 random.seed(7) for c in name: lucky += ord(c)*random.randint(1,77) print("幸运数字是:{}".format(lucky%777))
1.7from turtle import * fillcolor("red") begin_fill() while True: forward(200) right(144) if abs(pos()) < 1: break end_fill()
1.8from turtle import * color('red', 'yellow') begin_fill() while True: forward(200) left(170) if abs(pos()) < 1: break end_fill() done()