日期：2017-12-30 作者：秋的懵懂

# coding = utf-8

# ***********************************************************
# @brief    input输入和while循环
# @author   魏文应
# @date     2017-12-27
# ***********************************************************

'''
# ---------------------------------------------------------
# input()函数
print('_______________________________________________')
print("input()函数：")

message = input('请输入数据：')
print('你刚才输入了：\n\t' + message)

print('_______________________________________________')
# ---------------------------------------------------------



# ---------------------------------------------------------
# int()函数(字符转成数字类型)
print('\n\n')
print('_______________________________________________')
print("int()函数(字符转成数字类型)：")

age = input('请输入你的年龄：')
print('你刚才输入了：\n\t' + age)
# 数据类型转换
age = int(age)
print(age >= 20)

print('_______________________________________________')
# ---------------------------------------------------------



# ---------------------------------------------------------
# 取余
print('\n\n')
print('_______________________________________________')
print("取余符号：")

print(5 % 2)

print('_______________________________________________')
# ---------------------------------------------------------


# ---------------------------------------------------------
# while循环
print('\n\n')
print('_______________________________________________')
print("while循环：")

current_number = 1
while current_number <= 5:
    print(current_number)
    current_number += 1

print('_______________________________________________')
# ---------------------------------------------------------




# ---------------------------------------------------------
# 使用标志
print('\n\n')
print('_______________________________________________')
print("使用标志：")

prompt = '\nTell me something, and I will repeat it back to you'
prompt += '\nEnter "quit" to end the program.'
prompt += '\nInput:\n'

active = True
while active:
    message = input(prompt)
    if message == 'quit':
        active = False
    else:
        print(message)

print('_______________________________________________')
# ---------------------------------------------------------



# ---------------------------------------------------------
# 使用beak退出
print('\n\n')
print('_______________________________________________')
print("使用beak退出：")

prompt = '\nTell me something, and I will repeat it back to you'
prompt += '\nEnter "quit" to end the program.'
prompt += '\nInput:\n'

while True:
    message = input(prompt)
    if message == 'quit':
        break
    else:
        print(message)

print('_______________________________________________')
# ---------------------------------------------------------



# ---------------------------------------------------------
# 使用continue
print('\n\n')
print('_______________________________________________')
print("使用continue：")

current_number = 0
while current_number < 10:
    current_number += 1
    if current_number % 2 == 0:
        continue
    else:
        print(current_number)
    

print('_______________________________________________')
# ---------------------------------------------------------

'''


# ---------------------------------------------------------
# for 循环是一种遍历列表的有效方式， 
# 但在for 循环中不应修改列表， 
# 否则将导致Python难以跟踪其中的元素
print('\n\n')
print('_______________________________________________')
print("使用while出来列表：")

unconfirmed_users = ['alice', 'brian', 'candace']
confirmed_users = []

while unconfirmed_users:
    current_user = unconfirmed_users.pop()
    print('Verifying user: ' + current_user.title())
    confirmed_users.append(current_user)

print('\nThe following users had been comfirmed:')
for confirmed_user in confirmed_users:
    print(confirmed_user.title())

print('_______________________________________________')
# ---------------------------------------------------------




# ---------------------------------------------------------
# while遍历删除特定元素
print('\n\n')
print('_______________________________________________')
print("while遍历删除特定元：")

pets = ['dog', 'cat', 'dog', 'goldfish', 
    'cat', 'rabbit', 'cat']

print(pets)

while 'cat' in pets:
    pets.remove('cat')

print(pets)

print('_______________________________________________')
# ---------------------------------------------------------



# ---------------------------------------------------------
# 使用用户输入来填充字典
print('\n\n')
print('_______________________________________________')
print("使用用户输入来填充字典：")

responses = {}

polling_active = True

while polling_active:
    name = input('\nWhat is your name?')
    print('\nWhich mountain would you like to climb someday?')
    response = input()
    responses[name] = response
    
    repeat = input('还要继续输入？（yes/no）')
    if repeat == 'no':
        polling_active = False
    
    print('----- poll result-----')
    for name, response in responses.items():
        print(name + 'would like to climb' + response + '.')

print('_______________________________________________')
# ---------------------------------------------------------