PYTHON笔记

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from math import *
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#withNumber
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num=-6
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print(num)
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print(floor(6,2))#floor函数：剪切掉小数点后的数字
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print(ceil(3.3))#ceil函数：直接直接进位
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print(sqrt(36))#sqrt函数：求平方根

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name = input("Enter your name: ")
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age = input("Enter your age ")
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print("Hello" + name + "! You are " + age)
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#SetupCal
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num1=input("Enter your first numer")
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num2=input("Enter your second numer")
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result=float(num1) + float(num2)#float:将其转换成浮点数
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print(result)
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#填空游戏
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color = input("Enter a color: ")
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plural_noun = input("Enter a Plural_noun")
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celebrity = input("Enter a celebrity: ")
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print("Roses are " + color)
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print(plural_noun + " are blue ")
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print(" I love " + celebrity )

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friends = ["Tom", "Sam", "Joey", "Jim", "Wu"]
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print(friends[1])#读取小标为1的数据
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print(friends[1:])#从下标为1的数据开始读取
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print(friends[1:4])#从下标为1的数据读取到下标为4的数据但不包括4
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#列表的功能
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friends = ["Tom", "Sam", "Joey", "Jim", "Wu"]
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luck_numbers = [4, 6, 2, 4, 8]
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#print(friends[1])
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#print(friends[1:])
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#print(friends[1:4])
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#friends.extend(luck_numbers)
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friends.append("Creed")#添加单个数据
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friends.insert(2,"Aili")#在第三个位置插入数据
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friends.remove("Jim")#删除指定内容
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#friends.clear()
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friends.pop()#删掉最后一个数据
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print(friends)
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print(friends.index("Wu"))#输出指定元素下标
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print(friends.count("Tom"))#输出指定元素的数量
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friends.sort()#对元素进行升序排序
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print(friends)
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luck_numbers.reverse()#将数据颠倒输出
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print(luck_numbers)
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friends2 = friends.copy()#复制数据
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print(friends2)

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coordinates = (4,6,2,7)#元组
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coordinates[1] = 10#错误无法更改数据
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print(coordinates[1])

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is_male = True
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is_tall = False
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if is_male and is_tall:#两者都为真
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    print("You are a male or tall or both")
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elif is_male and not(is_tall):#前为真，后为假
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    print("You are a short male")
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elif not (is_male) and  is_tall:#前为假后为真
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    print("You  are not a male but are tall")
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else:#both is false
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    print("You neither male nor tall")

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def max_num(num1,num2,num3):
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    if num1 >= num2 and num1 >=num3:
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        return num1
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    elif num2 >= num1 and num2 >= num3:
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        return num2
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    else:return num3
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print(max_num(3,49,5))

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#从用户处输入数据
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num1 = float(input("Enter first number: "))
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op = input("Enter operator: ")#根据输入符号判断进行的运算
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num2 = float(input("Enter second number: "))
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if op == "+ ":
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    print(num1 + num2)
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elif op =="-":
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    print(num1 - num2)
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elif op == "/":
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    print(num1/num2)
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elif op == "*":
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    print(num1 * num2)
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else:
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    print("Invalid operator")

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i = 1
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while i <= 10:
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    print(i)
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    i +=1
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print("Done with loop")

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secret_word = "giraffe"
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guess = ""
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guess_count = 0
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guess_limit = 3
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out_of_guesses = False
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while guess != secret_word and not(out_of_guesses):
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    if guess_count < guess_limit:
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        guess = input("Enter your guess: ")
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        guess_count +=1
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    else:
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        out_of_guesses = True
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if out_of_guesses:
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    print("Out of Guesses, YOU LOSE")
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else:
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    print("You win!")

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monthConversions =
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{
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"Jan": "January",
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"Feb": "February",
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"Mar": "March",
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}
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print(monthConversions["Mar"])
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#print(monthConversions.get("Mar"))

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number_grid = [
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[1,2,3],
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[4,5,6],
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[7,8,9],
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[0]
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]
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#print(number_grid[0][2])
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#for row in number_grid:
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 #   print(row)
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for row in number_grid:
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    for col in row:
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        print(col)

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try:
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    #Value = 10/0
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    number = int(input("Enter a number: "))
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    print(number)
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except ZeroDivisionError:
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    print("Divided by zero")#错误输入
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except ValueError:
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    print("invalid input")

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def say_Hi(name):
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    {
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        print("Hello User" + name)
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    }
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print("Top")
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say_Hi(" Tom")
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print("Buttom")

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def cube(num):
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   return num*num*num
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result = cube(4)
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print(result)

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    def raise_to_power(base_num, pow_num):
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        result = 1
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        for index in range(pow_num):
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            result = result * base_num
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            return result
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        print(raise_to_power(2,4))

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def translate(phrase):#读入phrase字符串
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    translate = ""
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    for letter in phrase:
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        if letter.lower() in "aeiou":
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            if letter.isupper():#判断大小写
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                translate = translate + "G"
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            else:
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                translate = translate + "g"
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        else:
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            translate = translate + letter
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    return translate
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print(translate(input("Enter a phrase: ")))

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def get_file_ext(filename):
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    return filename[filename[filename.index(".") + 1]]
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def putnum(num):
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    return num+10
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#对输入进来的数进行加十操作

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import useful_tools#调用useful_tools模块
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#print(useful_tools.get_file_ext("bsjfsa"))
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print(useful_tools.putnum(10))

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employee_file = open("pythonProject\\测试.txt", "r")
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'''
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print(employee_file.read())#读全部文件
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print(employee_file.readline())#读一行
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'''
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print(employee_file.readlines())#分成数组读出
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employee_file.close()

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employee_file = open("pythonProject\\测试2.txt", "w")
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employee_file.write("\nTobe,a man")
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employee_file.close()

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class Student:
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    def __init__(self, name, major, gpa, is_on_probation):
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        self.name = name
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        self.major = major
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        self.gpa = gpa
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        self.is_on_probation = is_on_probation
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#__init__是python指定的构造函数写法，self类似于c 中的this指针

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from Student import Student
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student1 = Student("Jim", "Business", 4.1, False)
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student2 = Student("Pam", "Art", 4.5, True)
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print(student2.gpa)
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print(student1.is_on_probation)

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class Chef:
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    def make_chicken(self):
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        print("Te chef makes a chicken")
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    def make_salad(self):
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        print("The chef makes a salad")
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    def make_special_dish(self):
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        print("The chef make a special_dish")

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from Chef import Chef
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class ChineseChef(Chef):
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    def make_fried_rice(self):
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        print("The chef mkes fried rice")
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    def make_special_dish(self):
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        print("The chef makes orange chicken")

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from Chef import Chef
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from ChineseChef import ChineseChef
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myChef = Chef()
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myChef.make_special_dish()
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myChineseChef = ChineseChef()
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myChineseChef.make_chicken()
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myChineseChef.make_special_dish()