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1、题目：列表转换为字典。

1 #!/usr/bin/env python

2 #-*- coding: UTF-8 -*-

3

4 i = ['a', 'b']5 l = [1, 2]6 printdict([i, l])

{'a': 'b', 1: 2}

2、一个简单的while循环

1 #!/usr/bin/env python

2

3 count =04 while (count < 9):5 print 'The count is:', count6 count = count + 1

7

8 print "good bye"

The count is: 0

The countis: 1The countis: 2The countis: 3The countis: 4The countis: 5The
countis: 6The countis: 7The countis: 8good bye

3、一个简单的循环continue

1 #!/usr/bin/env python

2 i = 1

3 while i < 10:4 i += 1

5 if i%2 >0:6 continue

7 print i

2

4

6

8

10

4、break的用法

1 #!/usr/bin/env python

2 i = 1

3 while 1:4 printi5 i += 1

6 if i > 10:7 break

1

2

3

4

5

6

7

8

9

10

5、 一个无限循环的小例子

1 #!/usr/bin/python

2 #-*- coding: UTF-8 -*-

3

4 var = 1

5 while var == 1: #该条件永远为true,循环将无限执行下去

6 num = raw_input("Enter a number:")7 print "You entered:", num8

9 print "Good bye!"

Enter a number:5You entered:5Enter a number:6You entered:6Enter a
number:^CTraceback (most recent call last):

File"wuxian.py", line 6, in num= raw_input("Enter a number:")

KeyboardInterrupt

6、循环使用else�

1 #!/usr/bin/env python

2

3 count =04 while count < 5:5 print count, "is less than 5"

6 count = count + 1

7 else:8 print count, "is not less than 5"

0 is less than 5

1 is less than 5

2 is less than 5

3 is less than 5

4 is less than 5

5 is not less than 5

7、题目：输入某年某月某日，判断这一天是这一年的第几天？

1 #!/usr/bin/python

2 #-*- coding: UTF-8 -*-

3

4 year = int(raw_input('year:'))5 month = int(raw_input('month:'))6 day =
int(raw_input('day:'))7

8 months = (0,31,59,90,120,151,181,212,243,273,304,334)9 if 0 < month <= 12:10
sum = months[month - 1]11 else:12 print 'data error'

13 sum +=day14 leap =015 if (year % 400 == 0) or ((year % 4 == 0) and (year %
100 != 0)): #能被400或者4整除，但不能被100整除是闰年

16 leap = 1

17 if (leap == 1) and (month > 2):18 sum += 1

19 print 'it is the %dth day of this year.' %sum

year: 2016month:11day:2itis the 307th day of this year.

8、题目：输入三个整数x,y,z，请把这三个数由小到大输出。

1 #!/usr/bin/python

2 #-*- coding: UTF-8 -*-

3

4 l =[]5 for i in range(3):6 x =
int(raw_input('integer:'))7l.append(x)8l.sort()9 print l

integer: 4integer:7integer:1[1, 4, 7]

9、题目：将一个列表的数据复制到另一个列表中。�

1 #!/usr/bin/python

2 #-*- coding: UTF-8 -*-

3

4 a = [1, 2, 3]5 b =a[:]6 print b

[1, 2, 3]

10、题目：输出9*9乘法口诀表。

1 #!/usr/bin/python

2 #-*- coding: UTF-8 -*-

3

4 for i in range(1,2):5 for j in range(1,10):6 result = i *j7 print '%d * %d =
% -3d' %(i,j,result)8 print ''

1 * 1 = 1

1 * 2 = 2

1 * 3 = 3

1 * 4 = 4

1 * 5 = 5

1 * 6 = 6

1 * 7 = 7

1 * 8 = 8

1 * 9 = 9

11、python的标准输出

1 #!/usr/bin/env python

2 #_*_ coding:utf-8 _*_

3 name=input("name:")4 age=int(input("age:"))5 job=input("job:")6
salary=float(input("salary:"))7 info2='''8 ==================info of
{_name}=================

9 name:{_name}

10 age:{_age}

11 job:{_job}

12 salary:{_salary}

13 ==================================================

14'''.format(_name=name,15 _age=age,16 _job=job,17 _salary=salary)18
print(info2)

12、一个python输入密码的小程序，在输入密码时，为了使密码不可见，可以条用getpass模块的getpass()方法。

1 #!/usr/bin/env python

2 #_*_ coding:utf-8 _*_

3 importgetpass4 user =raw_input("请输入用户名：")5 pwd=getpass.getpass("请输入密码：")6
print(user, pwd)

#python passwd.py

('wangtao', '123456')

13、使用sys模块的小例子

1 #!/usr/bin/env python

2 from sys importargv3 printargv

#python argvtest.py 1 2 3 4 5

['argvtest.py', '1', '2', '3', '4', '5']

14、猜数字的小游戏

1 #!/usr/bin/env python

2 #_*_ coding:utf-8 _*_

3

4 time=05 real_age=23

6 while time<3:7 guess_age=int(raw_input("请猜猜我的真实年龄，请输入猜测的年龄："))8 if
guess_age==real_age:9 print("哈哈，你真聪明猜对了！")10 break

11 elif guess_age>real_age:12 print("数字太大了，请猜小一点！")13 else:14
print("数字有些小，请猜大一点！")15 time += 1

16 if time==3:17 continue_flag = raw_input("还要继续往下猜吗？(yes or no)")18 if
continue_flag == "y":19 time=020 else:21 print("退出系统! ")22 break

#python guess_agetest.py

15、for循环的小例子

#!/usr/bin/env python#_*_ coding:utf8 _*_#author:snate

for i in range(0,10,3):print("loop",i)if i>=6:break

#python for.py

('loop', 0)

('loop', 3)

('loop', 6)

16、显示目录文件

>>> importsubprocess>>> subprocess.call(["ls","-l","/tmp/"])

total84

-rw-r--r-- 1 root root 1702 Feb 24 10:44 6379.conf-r--r--r-- 1 root root 74812
Oct 25 10:53 cronie-1.4.4-12.el6.x86_64.rpm

drwxr-xr-x 2 root root 4096 Feb 24 16:46 hsperfdata_root

17. python包装ls命令

#!/usr/bin/env python#python wrapper for the ls command

importsubprocess

subprocess.call(["ls","-l","/tmp"])

18. 显示系统信息脚本

#!/usr/bin/env python#A system information gathering script

importsubprocess#command 1

uname = "uname"uname_arg= "-a"

print "Gathering system information with %s command: " %uname

subprocess.call([uname, uname_arg])#command 2

diskspace = "df"diskspace_arg= "-h"

print "Gathing diskspace information %s command: " %diskspace

subprocess.call([diskspace,diskspace_arg])

推荐下我自己建的人工智能Python学习群:[672948930
]，群里有我整理的一份关于pytorch、python基础，图像处理opencv\自然语言处理、机器学习、数学基础等资源库，想学习人工智能或者转行到高薪资行业的，大学生都非常实用，无任何套路免费提供！还可以