标签：随机验证码   图案   约数   公倍数   选择   dom   random模块   end   else   

说明

代码片段来自网上搬运的或者自己写的

华氏温度转摄氏温度

"""

将华氏温度转换为摄氏温度
F = 1.8C + 32

Version: 0.1
Author: 骆昊
Date: 2018-02-27

"""

f = float(input(‘请输入华氏温度: ‘))
c = (f - 32) / 1.8
print(‘%.1f华氏度 = %.1f摄氏度‘ % (f, c))

输入圆的半径计算计算周长和面积

"""

输入半径计算圆的周长和面积

Version: 0.1
Author: 骆昊
Date: 2018-02-27

"""

import math

radius = float(input(‘请输入圆的半径: ‘))
perimeter = 2 * math.pi * radius
area = math.pi * radius * radius
print(‘周长: %.2f‘ % perimeter)
print(‘面积: %.2f‘ % area)

输入年份判断是不是闰年

"""

输入年份 如果是闰年输出True 否则输出False

Version: 0.1
Author: 骆昊
Date: 2018-02-27

"""

year = int(input(‘请输入年份: ‘))
# 如果代码太长写成一行不便于阅读 可以使用\或()折行
is_leap = (year % 4 == 0 and year % 100 != 0 or
           year % 400 == 0)
print(is_leap)

英制单位与公制单位互换

"""

英制单位英寸和公制单位厘米互换

Version: 0.1
Author: 骆昊
Date: 2018-02-28

"""

value = float(input(‘请输入长度: ‘))
unit = input(‘请输入单位: ‘)
if unit == ‘in‘ or unit == ‘英寸‘:
    print(‘%f英寸 = %f厘米‘ % (value, value * 2.54))
elif unit == ‘cm‘ or unit == ‘厘米‘:
    print(‘%f厘米 = %f英寸‘ % (value, value / 2.54))
else:
    print(‘请输入有效的单位‘)

掷骰子决定做什么

"""

掷骰子决定做什么事情

Version: 0.1
Author: 骆昊
Date: 2018-02-28

"""

from random import randint

face = randint(1, 6)
if face == 1:
    result = ‘唱首歌‘
elif face == 2:
    result = ‘跳个舞‘
elif face == 3:
    result = ‘学狗叫‘
elif face == 4:
    result = ‘做俯卧撑‘
elif face == 5:
    result = ‘念绕口令‘
else:
    result = ‘讲冷笑话‘
print(result)

百分制成绩转等级制

"""

百分制成绩转等级制成绩
90分以上    --> A
80分~89分    --> B
70分~79分    --> C
60分~69分    --> D
60分以下    --> E

Version: 0.1
Author: 骆昊
Date: 2018-02-28

"""

score = float(input(‘请输入成绩: ‘))
if score >= 90:
    grade = ‘A‘
elif score >= 80:
    grade = ‘B‘
elif score >= 70:
    grade = ‘C‘
elif score >= 60:
    grade = ‘D‘
else:
    grade = ‘E‘
print(‘对应的等级是:‘, grade)

输入三条边长如果能构成三角形就计算周长和面积

"""

判断输入的边长能否构成三角形
如果能则计算出三角形的周长和面积

Version: 0.1
Author: 骆昊
Date: 2018-02-28

"""

import math

a = float(input(‘a = ‘))
b = float(input(‘b = ‘))
c = float(input(‘c = ‘))
if a + b > c and a + c > b and b + c > a:
    print(‘周长: %f‘ % (a + b + c))
    p = (a + b + c) / 2
    area = math.sqrt(p * (p - a) * (p - b) * (p - c))
    print(‘面积: %f‘ % (area))
else:
    print(‘不能构成三角形‘)

上面的代码中使用了math模块的sqrt函数来计算平方根。用边长计算三角形面积的公式叫做海伦公式。

实现一个个人所得税计算器

"""

输入月收入和五险一金计算个人所得税

Version: 0.1
Author: 骆昊
Date: 2018-02-28

"""

salary = float(input(‘本月收入: ‘))
insurance = float(input(‘五险一金: ‘))
diff = salary - insurance - 3500
if diff <= 0:
    rate = 0
    deduction = 0
elif diff < 1500:
    rate = 0.03
    deduction = 0
elif diff < 4500:
    rate = 0.1
    deduction = 105
elif diff < 9000:
    rate = 0.2
    deduction = 555
elif diff < 35000:
    rate = 0.25
    deduction = 1005
elif diff < 55000:
    rate = 0.3
    deduction = 2755
elif diff < 80000:
    rate = 0.35
    deduction = 5505
else:
    rate = 0.45
    deduction = 13505
tax = abs(diff * rate - deduction)
print(‘个人所得税: ￥%.2f元‘ % tax)
print(‘实际到手收入: ￥%.2f元‘ % (diff + 3500 - tax))

输入一个数判断是不是素数

"""

输入一个正整数判断它是不是素数

Version: 0.1
Author: 骆昊
Date: 2018-03-01

"""

from math import sqrt

num = int(input(‘请输入一个正整数: ‘))
end = int(sqrt(num))
is_prime = True
for x in range(2, end + 1):
    if num % x == 0:
        is_prime = False
        break
if is_prime and num != 1:
    print(‘%d是素数‘ % num)
else:
    print(‘%d不是素数‘ % num)

输入两个正整数，计算最大公约数和最小公倍数

"""

输入两个正整数计算最大公约数和最小公倍数

Version: 0.1
Author: 骆昊
Date: 2018-03-01

"""

x = int(input(‘x = ‘))
y = int(input(‘y = ‘))
if x > y:
    (x, y) = (y, x)
for factor in range(x, 0, -1):
    if x % factor == 0 and y % factor == 0:
        print(‘%d和%d的最大公约数是%d‘ % (x, y, factor))
        print(‘%d和%d的最小公倍数是%d‘ % (x, y, x * y // factor))
        break

打印三角形图案

"""

打印各种三角形图案

*
**
***
****
*****

    *
   **
  ***
 ****
*****

    *
   ***
  *****
 *******
*********

Version: 0.1
Author: 骆昊
Date: 2018-03-01

"""

row = int(input(‘请输入行数: ‘))
for i in range(row):
    for _ in range(i + 1):
        print(‘*‘, end=‘‘)
    print()


for i in range(row):
    for j in range(row):
        if j < row - i - 1:
            print(‘ ‘, end=‘‘)
        else:
            print(‘*‘, end=‘‘)
    print()

for i in range(row):
    for _ in range(row - i - 1):
        print(‘ ‘, end=‘‘)
    for _ in range(2 * i + 1):
        print(‘*‘, end=‘‘)
    print()

实现计算求最大公约数和最小公倍数的函数

def gcd(x, y):
    (x, y) = (y, x) if x > y else (x, y)
    for factor in range(x, 0, -1):
        if x % factor == 0 and y % factor == 0:
            return factor


def lcm(x, y):
    return x * y // gcd(x, y)

实现判断一个数是不是回文数的函数

def is_palindrome(num):
    temp = num
    total = 0
    while temp > 0:
        total = total * 10 + temp % 10
        temp //= 10
    return total == num

实现判断一个数是不是素数的函数

def is_prime(num):
    for factor in range(2, num):
        if num % factor == 0:
            return False
    return True if num != 1 else False

写一个程序判断输入的正整数是不是回文素数

if __name__ == ‘__main__‘:
    num = int(input(‘请输入正整数: ‘))
    if is_palindrome(num) and is_prime(num):
        print(‘%d是回文素数‘ % num)

在屏幕上显示跑马灯文字

import os
import time


def main():
    content = ‘北京欢迎你为你开天辟地…………‘
    while True:
        # 清理屏幕上的输出
        os.system(‘cls‘)  # os.system(‘clear‘)
        print(content)
        # 休眠200毫秒
        time.sleep(0.2)
        content = content[1:] + content[0]


if __name__ == ‘__main__‘:
    main()

设计一个函数产生指定长度的验证码，验证码由大小写字母和数字构成

import random


def generate_code(code_len=4):
    """
    生成指定长度的验证码

    :param code_len: 验证码的长度(默认4个字符)

    :return: 由大小写英文字母和数字构成的随机验证码
    """
    all_chars = ‘0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ‘
    last_pos = len(all_chars) - 1
    code = ‘‘
    for _ in range(code_len):
        index = random.randint(0, last_pos)
        code += all_chars[index]
    return code

设计一个函数返回给定文件名的后缀名

def get_suffix(filename, has_dot=False):
    """
    获取文件名的后缀名

    :param filename: 文件名
    :param has_dot: 返回的后缀名是否需要带点

    :return: 文件的后缀名
    """
    pos = filename.rfind(‘.‘)
    if 0 < pos < len(filename) - 1:
        index = pos if has_dot else pos + 1
        return filename[index:]
    else:
        return ‘‘

设计一个函数返回传入的列表中最大和第二大的元素的值

def max2(x):
    m1, m2 = (x[0], x[1]) if x[0] > x[1] else (x[1], x[0])
    for index in range(2, len(x)):
        if x[index] > m1:
            m2 = m1
            m1 = x[index]
        elif x[index] > m2:
            m2 = x[index]
    return m1, m2

计算指定的年月日是这一年的第几天

def is_leap_year(year):
    """
    判断指定的年份是不是闰年

    :param year: 年份

    :return: 闰年返回True平年返回False
    """
    return year % 4 == 0 and year % 100 != 0 or year % 400 == 0


def which_day(year, month, date):
    """
    计算传入的日期是这一年的第几天

    :param year: 年
    :param month: 月
    :param date: 日

    :return: 第几天
    """
    days_of_month = [
        [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],
        [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
    ][is_leap_year(year)]
    total = 0
    for index in range(month - 1):
        total += days_of_month[index]
    return total + date


def main():
    print(which_day(1980, 11, 28))
    print(which_day(1981, 12, 31))
    print(which_day(2018, 1, 1))
    print(which_day(2016, 3, 1))


if __name__ == ‘__main__‘:
    main()

打印杨辉三角

def main():
    num = int(input(‘Number of rows: ‘))
    yh = [[]] * num
    for row in range(len(yh)):
        yh[row] = [None] * (row + 1)
        for col in range(len(yh[row])):
            if col == 0 or col == row:
                yh[row][col] = 1
            else:
                yh[row][col] = yh[row - 1][col] + yh[row - 1][col - 1]
            print(yh[row][col], end=‘\t‘)
        print()


if __name__ == ‘__main__‘:
    main()

双色球选号

from random import randrange, randint, sample


def display(balls):
    """
    输出列表中的双色球号码
    """
    for index, ball in enumerate(balls):
        if index == len(balls) - 1:
            print(‘|‘, end=‘ ‘)
        print(‘%02d‘ % ball, end=‘ ‘)
    print()


def random_select():
    """
    随机选择一组号码
    """
    red_balls = [x for x in range(1, 34)]
    selected_balls = []
    for _ in range(6):
        index = randrange(len(red_balls))
        selected_balls.append(red_balls[index])
        del red_balls[index]
    # 上面的for循环也可以写成下面这行代码
    # sample函数是random模块下的函数
    # selected_balls = sample(red_balls, 6)
    selected_balls.sort()
    selected_balls.append(randint(1, 16))
    return selected_balls


def main():
    n = int(input(‘机选几注: ‘))
    for _ in range(n):
        display(random_select())


if __name__ == ‘__main__‘:
    main()

可以使用random模块的sample函数来实现从列表中选择不重复的n个元素。

约瑟夫环问题

"""

《幸运的基督徒》
有15个基督徒和15个非基督徒在海上遇险，为了能让一部分人活下来不得不将其中15个人扔到海里面去，有个人想了个办法就是大家围成一个圈，由某个人开始从1报数，报到9的人就扔到海里面，他后面的人接着从1开始报数，报到9的人继续扔到海里面，直到扔掉15个人。由于上帝的保佑，15个基督徒都幸免于难，问这些人最开始是怎么站的，哪些位置是基督徒哪些位置是非基督徒。

"""


def main():
    persons = [True] * 30
    counter, index, number = 0, 0, 0
    while counter < 15:
        if persons[index]:
            number += 1
            if number == 9:
                persons[index] = False
                counter += 1
                number = 0
        index += 1
        index %= 30
    for person in persons:
        print(‘基‘ if person else ‘非‘, end=‘‘)


if __name__ == ‘__main__‘:
    main()

Python - 代码片段，Snippets，Gist

标签：随机验证码   图案   约数   公倍数   选择   dom   random模块   end   else   

原文地址：https://www.cnblogs.com/allen2333/p/9190811.html