Python
程序设计

# 摄氏度转华氏度：一次定义
def c_f(c):
    f = c * 9 / 5 + 32
    return f

# 多次调用
c = float(input("摄氏度："))
f_temperature = c_f(c)
print(f_temperature)

from math import radians, sin, cos, acos
class Point:
    def __init__(self, lon, lat):
        self.__lon = lon     # 经度
        self.__lat = lat     # 纬度
    def getRadLon(self): return radians(self.__lon)
    def getRadLat(self): return radians(self.__lat)
def distance(p1, p2):
    a, b = p1.getRadLat(), p2.getRadLat()
    c = cos(p1.getRadLon() - p2.getRadLon())
    return 6371 * acos(sin(a)*sin(b) + cos(a)*cos(b)*c)

class LoginError(Exception):
    pass
def ValidateUsernamePassword(username, password):
    if len(username) < 6:
        raise LoginError("用户名长度不少于6位")
    if len(password) < 9:
        raise LoginError("密码长度不少于9位")
try:
    name, pwd = input("用户名："), input("密码：")
    ValidateUsernamePassword(name, pwd)
except LoginError as e:
    print(e)

import requests
from bs4 import BeautifulSoup
# url：空气质量数据页地址（占位）
response = requests.get(url=url, headers=headers)
response.encoding = 'GBK'
soup = BeautifulSoup(response.text, 'html.parser')
r1 = soup.find('div', attrs={'class': 'citychk'})
for child in r1.find_all('dl'):
    province = child.dt.b.text
    for city in child.find_all('a'):
        city_list.append([province, city.text, city.get('href')])

import random
def newNumber():            # 出题
    return random.randint(1, 101)
def guessNumber(number):    # 猜题
    yAnswer = int(input("enter a integer between 0-100:"))
    if yAnswer > number: print("too big")
    elif yAnswer < number: print("too small")
    else: print("right"); return 1
    return 0
def guessTime(number):
    for i in range(10):
        if guessNumber(number) == 1: break