需要添加变量，而不是连接变量 Python

Question

这是我完成的编码：

from math import *
from time import sleep

def vacation():
    print("Time to plan for a vacation.")

    sleep(1)

    dates = input("Let's start with the dates. What day are you getting there, and what day are you leaving? For formatting, you can use month/day-month/day.")

    sleep(1)

    location = input("Now where are you traveling to?")

    sleep(1)

    ticketCost = input("What is the cost of a two-way ticket to " + location + " and back?")

    sleep(1)

    dayOne = input("What is the cost for at least two meals on the first day?")
    dayTwo = input("What is the cost for at least two meals on the second day?")

    sleep(1)

    hotel = input("What is the name of the hotel you are staying at?")
    hotelCost = input("What is the cost for one night at (the) " + hotel + "?")

    sleep(1)

    print("Vacation! Going to " + location + " for " + dates + ".")
    print("-------------------------------")
    print("Total cost of the trip:")
    print("-------------------------------")

    sleep(1)

    print("Plane Ticket: " + ticketCost)

    sleep(1)

    print("Estimate Cost of Meals (Day One): " + dayOne + ".")
    sleep(1)
    print("Estimate Cost of Meals (Day Two): " + dayTwo + ".")
    sleep(1)
    print("One Night at (the) " + hotel + ": " + hotelCost + ".")
    sleep(1)
    **total = hotelCost + dayOne + dayTwo + ticketCost**
    **totalExtra = total + 50
    print("The total is: " + total + ".")**
    sleep(1)
    print("Make sure you leave some room for souvenirs, pay tolls, and other expenses. Additional  is added for this, and that total is: " + totalExtra + ".")
    print("-------------------------------")
    sleep(1)
    print("Enjoy your vacation!")

vacation()

问题区域以粗体显示。我不知道该怎么做，我已经尝试在多个地方使用 int()、str() 等。总数不应该是乱码（即“843290842”）。我错过了什么吗？

Answer 1

input函数returns一个字符串，不是一个整数。随处投射：

dates = int(input("Let's start with the dates. What day are you getting there, and what day are you leaving? For formatting, you can use month/day-month/day."))

等...

其他几点

如果您以后要将这些全部加在一起，请考虑将它们放入一个集合中，而不是将它们放在一堆松散的变量中。字典可以让您保留名称：

costs = {}
costs['dates'] = int(input("Let's start with the dates. What day are you getting there, and what day are you leaving? For formatting, you can use month/day-month/day."))

最后你可以很容易地通过字典循环得到总数

total = sum(costs.values())

请记住省略本应为 hotel 之类的字符串的值，这些值可能应该被称为 hotel_name。

最后，您应该尝试字符串插值（这取决于您的 Python 版本，但对于 3.6+）：

"What is the cost for one night at (the) " + hotel + "?"

变成

f"What is the cost for one night at (the) {hotel}?"

需要添加变量，而不是连接变量 Python

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