大家在做第一章测试题时,需要复习如下相关知识点:编译型VS解释型、变量名规范、数据类型、程序交互、格式化输出、运算符、流程控制。
1.简述编译型与解释型语言的区别,且分别列出你知道的那些语言属于编译型,哪些属于解释型。
2.执行Python脚本的两种方式是什么?
3.布尔值分别有什么?
4.如何查看变量在内存中的地址?
5.实现用户输入用户名和密码,当用户名为seven且密码为123时,显示登录成功,否则登录失败!
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1 user = 'seven' 2 pwd = 123 3 username = input('username:') 4 password = int(input('password:')) 5 if username == user and password == pwd: 6 print('Welcome to %s' % username) 7 else: 8 print('Wrong username or password')
6.实现用户输入用户名和密码,当用户名为seven且密码为123时,显示登录成功,否则登录失败,失败时允许重复输入三次。
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1 user = 'seven' 2 pwd = 123 3 count = 0 # 计数器 4 while count < 3: 5 username = input('username:') 6 password = int(input('password:')) 7 if username == user and password == pwd: 8 print('Welcome to %s' % username) 9 break 10 else: 11 print('Wrong username or password') 12 count += 1
7.实现用户输入用户名和密码,当用户名为seven或Alex且密码为123时,显示登录成功,否则登录失败,失败时允许重复输入三次。
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1 user = ['seven', 'alex'] 2 pwd = 123 3 count = 0 4 while count < 3: 5 username = input('username:') 6 password = int(input('password:')) 7 if username in user: 8 if password == pwd: 9 print('Welcome to %s' % username) 10 break 11 else: 12 print('Wrong username or password') 13 count += 1
8.声明变量注意事项有哪些?
9.Python 单行注释和多行注释分别用什么?
10.编写成绩的小程序,成绩有ABCDE5个等级,与分数的对应关系如下:
A 90-100
B 80-89
C 60-79
D 40-59
E 0-39
要求:用户输入0-100的数字后,你能正确打印它的对应成绩
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1 grade = int(input('please your grade:')) 2 if grade >= 100: 3 print('grade is 0-100') 4 elif 90 <= grade < 100: 5 print('A') 6 elif 80 <= grade < 89: 7 print('B') 8 elif 60 <= grade < 79: 9 print('C') 10 elif 40 <= grade < 59: 11 print('D') 12 else: 13 print('E')
11.写代码
a.使用while循环实现输出2-3+4-5+6...+100的和
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1 count = 2 2 s = 0 3 while count <= 100: # loop 3 s = -1 count = 4 4 if count % 2 == 0: 5 s += count 6 else: 7 s -= count # 3 8 count += 1 9 print(s)
b.使用while循环实现输出1,2,3,4,5,8,9,11,12
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1 count = 0 2 while count < 12: 3 count += 1 4 if count == 6: 5 continue 6 elif count == 10: 7 continue 8 print(count)
c.使用while循环输出100-50,从大到小,如100,99,98...,到50时,再从0循环输出到50,然后结束。
小白方法:
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1 count = 100 2 while count >= 50: 3 print(count) 4 count -= 1 5 count = 0 6 while count <= 50: 7 print(count) 8 count += 1
高级玩法:
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1 count = 0 2 while count <= 100: 3 count += 1 4 if count <= 50: 5 print(100 - count) # count = 1 6 else: 7 print(count - 51) # count =51 0 52 1
d. 使用while 循环实现输出1-100内的所有奇数。
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1 count = 0 2 while count < 100: 3 count += 1 4 if count % 2 != 0: 5 print(count)
e.使用while循环实现输出1-100内的所有偶数。
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1 count = 0 2 while count < 100: 3 count += 1 4 if count % 2 == 0: 5 print(count)
12.制作趣味模板程序(编程题)
需求:等待用户输入名字、地点、爱好,根据用户的名字和爱好任意显示。
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1 name = input("Name:").strip() 2 site = input("Site:").strip() 3 hobby = input("Hobby:").strip() 4 print("可爱的%s,最喜欢在%s看书。爱好是%s" % (name, site, hobby))
13.输入年份,判断该年份是否是闰年并输出结果。(编程题)
需求:凡符合下面两个条件之一的年份就是闰年。(1)能被4整除但不能被100整除。(2)能被400整除。
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1 while True: 2 year = int(input('Please is year:')) 3 if year % 4 == 0 and year % 100 != 0: 4 print("%s is leap year." % year) 5 break 6 elif year % 400 == 0: 7 exit("%s is a century" % year) 8 else: 9 exit("不是闰年")
14.假设一年定期利率为3.25%,计算一下要过多少年,一万元的一年定期存款连本带息能翻翻?(编程题)
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1 # 利息计算的基本公式为:利息=本金×存期时间×存款利率; 2 capital = 10000 # 本金 3 count = 0 4 while capital< 20000: 5 count += 1 6 interest = capital * 0.0325 # 利息 7 capital += interest # 连本带息 8 print(capital, count)
15.使用while,完成以下图形的输出
*
**
***
****
*****
****
***
**
*
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1 count = 0 2 while count < 10: 3 count += 1 4 if count <= 5: 5 print(count * '*') 6 else: 7 print((10-count) * '*') # count 6
16.使用while循环实现1-100的整数相加
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1 count = 0 2 s = 0 3 while count < 100: 4 count += 1 5 s += count 6 print(s)
17.一球从100米高度自由落下。每次落地后反跳回原高度的一半;在落下,求它在第10次落地时,共经过多少米?第10次反跳多高。
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1 height = 100 2 count = 0 3 n = 100 4 while count < 10: 5 height = height / 2 # 反弹高度50, 6 n += height * 2 # 统计总长度 7 count += 1 8 print(count, height, n)