# encoding: utf-8
'''
@author: mark
@file: 20200214.py
@time: 2020/2/14 14:21
@software: PyCharm
'''
'''
#初始学习python
print("hello word") #打印hello word
price = 10 #初始化变量price
rating = 4.9 #初始化变量rating
name = "mark" #初始化变量name
is_published = False #初始化变量is_published
print(price) #打印price
'''
'''
#控制台输入使用
name = input('what is your name? ') #控制台输入值赋值给name
favorite_color = input("what is your favorite color ? ") #控制台输入值赋值给favorite_color
print("Hi " + name + "your facorite_color " + favorite_color) #打印Hi name your facorite_color favorite_color
'''
'''
#控制台输入使用
birth_year = input("Birth year: ") #控制台输入值赋值给birth_year
print(type(birth_year)) #打印控制台输入值的类型
age = 2020 - int(birth_year) #根据控制台输入的值计算年龄
print(type(age)) #打印年龄的类型
print(age) #打印年龄
'''
'''
#控制台输入使用，以及加减乘除运算
weight_lbs = input('Weight (lbs): ') #控制台输入值赋值给weight_lbs
weight_kg = float(weight_lbs) * 0.45 #weight_lbs 转换为公斤
print(weight_kg) #打印体重kg
weight_kg = input('Weight (kg): ') #控制台输入体重kg
weight_lbs = float(weight_kg) / 0.45 #体重公斤转换为磅
print(weight_lbs) #打印体重 磅
print(10 / 3) #除法，带小数点
print(10 // 3) #取商
print(10 % 3) #取余
print(10 ** 3) #次方
x = 10 #初始化X
x += 3 #X自加3 X = X + 3
print(x) #打印X
x -= 3 #X自减3 X = X - 3
print(x) #打印#
x = 10 + 3 ** 3 ** 2 # 同理 x = 3 ** (3 ** 2)
print(x)
'''
'''
#字符串的截取
course = "Python's Course for Beginners " #初始化字符串
print(course) #打印字符串
print(course[0]) #打印字符串第一个字符
print(course[0:3]) #打印字符串第一个到第四个字符
print(course[1:]) #打印从第二个字符开始的整个字符串
print(course[:5]) #打印开始的五个字符串
print(course[-2]) #打印倒数第二个字符
print(course[1:-1]) #打印第二个字符到倒数第二个字符
'''
'''
#f字符串使用，调用变量
first = 'John' #初始化变量first
last = 'Smith' #初始化变量last
message = first + ' [' + last + '] is a coder' #字符串拼接
print(message) #打印拼接的字符串
msg = f'{first} [{last}] is a coder' #使用f字符串进行拼接字符串
print(msg) #打印拼接的字符串
'''
'''
#字符串操作
course = 'Python for Beginners' #初始化字符串
print(course.find('Beginners')) #查找第一次出现Beginners时的脚标
print(course.replace('Beginners', 'Absoulte Beginners')) #Absoulte Beginners替换字符串中的Beginners
print('Python' in course) #查看Python是否在字符串中
print(len(course)) #查看字符串的长度
print(course.upper()) #字符串全部大写
print(course.lower()) #字符串全部小写
'''
'''
#math计算
import math #引入math
x = 2.9 #初始化X
print(round(x)) #四舍五入
print(abs(-x)) #绝对值
print(math.ceil(x)) #向上取整
print(math.floor(x)) #向下取整
'''
'''
#if语句
is_hot = True #初始化is_hot
is_cold = True #初始化is_cold
if is_hot : #判断是否为真
print("It's a hot day") #打印It's a hot day
print("Drink plenty of water") #打印Drink plenty of water
elif is_cold: #判断是否为真
print(" It's a cold day") #打印It's a cold day
print("Wear warm clothes") #打印Wear warm clothes
else: #其他情况
print("It's a lovely day") #打印It's a lovely day
print(" Enjoy your day") #打印Enjoy your day
price = 1000000 #初始化price
has_good_credit = True #初始化has_good_credit
if has_good_credit: #判断has_good_credit是否为真
down_payment = 0.1 * price #运算
else: #其他情况
down_payment = 0.2 * price #运算
print(f"Down payment: ${down_payment}") #打印 Down payment: $down_payment
'''
'''
#if语句以及逻辑连接
has_high_income = True #初始化has_high_income
has_good_credit = True #初始化has_good_credit
has_criminal_record = False #初始化has_criminal_record
if has_good_credit and has_high_income: #has_good_credit和has_high_income是否同时为真
print("has_good_credit and has_high_income Eligible for loan") #打印has_good_credit and has_high_income Eligible for loan
if has_good_credit or has_high_income: #has_good_credit和has_high_income是否有一个为真
print("has_good_credit or has_high_income Eligible for loan") #打印has_good_credit or has_high_income Eligible for loan
if has_good_credit and not has_criminal_record: #has_good_credit为真且has_criminal_record为假
print("Eligible for loan") #打印Eligible for loan
temperature = 30 #初始化temperature
if temperature > 30: #temperature > 30是否为真
print("It's a hot day") #打印It's a hot day
else: #其他
print("It's not a hot day") #打印It's not a hot day
#名字长度判断
name = "John smith" #初始化name
if len(name) < 3: #判断len(name) < 3是否为真
print("Name must be at least 3 characters.") #打印
elif len(name) > 50: #判断len(name) > 50是否为真
print("Name must be a maximum of 50 characters.") #打印
else: #其他情况
print("Name looks good!") #打印
#体重转换
weight = int(input('Weight: ')) #对控制台输入的值进行类型转换
unit = input('(L)bs or (K)g: ') #控制台输入值赋值给unit
if unit.upper() == "L": #unit.upper() == "L"是否为真
converted = weight * 0.45 #运算
print(f"You are {converted} kilos") #打印You are converted kilos
else: #其他情况
converted = weight / 0.45 #运算
print(f"You are {converted} kilos") #打印You are converted kilos
'''
'''
#while循环语句
i = 1 #初始化i
while i <= 5: #i <= 5是否为真
print('*' * i) #打印*
i += 1 #自加
print("Done") #打印Done
#猜数字
secret_number = 9 #初始化secret_number
guess_count = 0 #初始化guess_count
guess_limit = 3 #初始化guess_limit
while guess_count < guess_limit: #guess_count < guess_limit是否为真
guess = int(input('Guess: ')) #控制台输入赋值给guess
guess_count += 1 #自加
if guess == secret_number: #guess == secret_number是否为真
print('You win!') #打印You win!
break #跳出循环
else: #其他
print('Sorry , you failed!') #打印Sorry , you failed!
'''
'''
#while循环和if语句结合的案例
#开车，①quit为退出，help为帮助信息，start为开始，stop为结束，②且已经开启的不能再次开启
command = "" #初始化command用以判断是否跳出循环
started = False #初始化started，默认车是关闭状态，防止车被重复开启
while command.lower() != "quit": #判断是否可以跳出循环
command = input("> ").lower() #控制台输入值赋给command
if command.lower() == "help": #判断是否需要帮助
print('start/stop/quit') #输出帮助信息
elif command.lower() == 'start': #判断是否为开车信息
if started: #车是否已经开启
print("car is already start") #打印car is already start
else: #车没有开启
started = True #变更车的状态信息
print('Start the car') #打印Start the car
elif command.lower() == 'stop': #判断是否为停车信息
if not started: #车是否已经停
print("car is already stopped") #打印car is already stopped
else: #车没有停
started = False #变更车的状态信息
print('stop the car ') #打印stop the car
elif command == "quit": #判断是否为退出信息
break #跳出循环
else: #其他情况
print("don't understand") # 打印don't understand
'''
'''
#循环遍历
prices = [10, 20, 30] #初始化prices
total = 0 #设定遍历的初始值
for price in prices: #遍历的条件
total += price #自加
print(f"Total:{total}") #输出遍历结果
'''
'''
#所有坐标
for x in range(4): #设置循环条件
for y in range(3): #设置二级循环条件
print(f'({x},{y})') #输出结果
numbers = [5, 3, 5, 3, 3] #设置初始numbers
for x_count in numbers: #设置循环条件
# print('X' * x)
output = '' #输出值初始设置
for count in range(x_count): #设置输出值循环条件
output += 'X' #输出特征设置
print(output) #打印输出
#数组列表
names = ['John', 'Bob', 'Mosh', 'Sarah'] #设置初始列表names
print(names) #打印输出列表
print(names[0]) #打印第一个元素
print(names[2:]) #打印第三个到最后一个元素
print(names)
#查询列表中的最大值
numbers = [3, 6, 2, 8, 4, 10] #设置初始列表numbers
max = numbers[0] #设置最大值的初始值
for number in numbers: #设置循环条件
if number > max: #进行判断是否为最大值
max = number #赋值
print(max) #输出最大值
'''
'''
#数组操作
matrix = [
[1, 2, 3],
[4, 5, 6],
[7, 8, 9],
] #初始化数组matrix
print(matrix[0][2]) #打印输出数组中第一个元素中的第三个元素
for row in matrix: #设置循环列表中的第一层
for low in row: #设置循环列表中的第二层
print(low) #输出打印
'''
'''
#列表中的操作
numbers = [5, 2, 1, 5, 7, 4] #初始化列表 numbers
print(numbers.sort()) #反向排序
numbers.reverse() #按照从大到小排列
print(numbers) #打印
numbers.append(14) #列表中加入新的值
print(numbers) #打印
numbers.insert(2, 100) #在列表的第三个位置加入100
print(numbers) #打印
numbers.remove(2) #去除列表中的2
print(numbers) #打印
numbers2 = numbers.copy() #赋值
print(numbers2) #打印
numbers.pop() #去除末尾的值
print(numbers) #打印
print(numbers.index(1)) #列表中的第二个值
print(numbers.count(5)) #列表中出现5的次数
numbers.clear() #清除列表
print(numbers) #打印
#清楚列表中的重复项
numbers = [5, 2, 3, 3, 2, 5, 23, 32] #初始化列表numbers
for number in numbers: #设置循环条件
if numbers.count(number) != 1: # 查询是否在列表里唯一
numbers.remove(number) #移除重复的元素
# numbers.append(number) #
print(numbers) #打印没有重复值的列表
uniques = [] #设置一个空列表
for number in numbers: #设置循环条件
if number not in uniques: #设置判断条件
uniques.append(number) #将符合条件的元素添加到空列表中
print(uniques) #打印新的列表
'''
'''
#字典
customer = {
"name": "John Smith",
"age": 30,
"is_verified": True
} #初始化字典customer
customer["name"] = "Mark" #更改对应key的value
print(customer["name"]) #打印对应key的value
print(customer["is_verified"]) #打印对应key的value
print(customer.get("name")) #打印对应key的value
'''
'''
#字典应用，输入数字对应英文
digits_mapping = {
"1": "One",
"2": "Two",
"3": "Three",
"4": "Four",
"5": "Five",
"6": "Six",
"7": "Seven",
"8": "Eight",
"9": "Nine",
} #初始化字典digits_mapping
phone = input("Phone: ") #控制台输入
output = '' #初始化输出
for ch in phone: #设置循环条件
output += digits_mapping.get(ch, "!") + " " #获取对应字典中的value
print(output) #打印
'''
