Python多行输入程序实例代码及扩展

lines = int(input("请输入您要输入的行数"))

for i in range(lines):
    text += input("输入内容") + '\n'    #引入一个text变量储存数据  

text = ''
lines = int(input("请输入您要输入的行数"))
for i in range(lines):
    text += input("输入内容") + '\n'
print(text)

print("开始写文章")

while True:
    line_text = input()
    if line_text == '':
    	break
    text += line_text + '\n'

text = ''
line_text = ''

print("开始写文章")
while True:
    line_text = input()
    if line_text == '':
    	break
    text += line_text + '\n'
print(text)

def add_food(food_dict):
    
    add_foods = []
    money = 0
    print_i = 0
    foods = food_dict.keys()
    
    for i in food_dict:
        print_i += 1
        print("%d、%s%s元" % (print_i, i, food_dict[i]))

    while True:
        if len(add_foods) == 0:
            want = input("你想要食物")
            if want not in foods:
                print("没有这个食物")
        elif len(add_foods) != 0:
            want = input("还要食物输入食物名称，不要就输入除食物名称外任意字符。你想要")
            if want not in foods:
                break
        for k in foods:
            if want == k:
                add_foods.append(want)
                money += food_dict[k]
    print("总金额：%d" % money)
    return money, add_foods

foods = {"香辣无骨鸡爪":5,
         "老八秘制小汉堡":10,
         "丝袜奶茶":5,
         "狗尿泡":7,
         "王致和臭豆腐":7,
         "鲱鱼罐头":10}

money, food_list = add_food(foods)

print("你点了", end = '')
for food in food_list:
    if food_list.index(food) == len(food_list) - 1:
        print(food + '。')
    else:
        print(food + '、', end = '')

import os
file_name = ''
replace = ''

def add_diary(name):

    input_text = ''
    print("开始写日记：")
    while True:
        text = input()
        if len(text) == 0:
            break
        input_text += text + '\n'

    with open(name, 'w') as f:
        f.write(input_text)
        f.close()

while file_name == '':

    file_name = input("输入一个你想要的文件名")
    if os.path.isfile(file_name + ".txt") == True:
        replace = input("文件夹中有此文件，是否替换？")
        if replace == '否':
            file_name = ''

add_diary(file_name + '.txt')
print(open(file_name + '.txt', 'r').read())