Question

我正在尝试编制一个在python中销售剧院门票的模拟。该计划将在填写成人，儿童和老年人数量后计算总收入，但检查收入和座位百分比总是显示为0。我有与percentage_sold和sum_income有关的问题。任何人都可以帮助我吗？

   ## -*- coding: iso-8859-15 -*-

import os
import sys
from tkinter import *
from tkinter import ttk

class Theater:
        def __init__(self, name, seats, price_adult, price_child, price_senior):
                self.name = name
                self.seats = seats
                self.price_adult = price_adult
                self.price_child = price_child
                self.price_senior = price_senior
                self.sold_adult = IntVar(root)
                self.sold_child = IntVar(root)
                self.sold_senior = IntVar(root)
                self.percentage_sold = IntVar(root)
                self.sum_income = IntVar(root)

        def __str__(self):
                return self.name

root = Tk()
root.title("Teater ekonomi")

def create_list(FILENAME):      
        f = open(FILENAME, "r") 
        theater_list = []
        parts = []
        for line in f:
                parts = line.strip().split('/')
                theater_list.append(Theater(parts[0], int(parts[1]), 
                int(parts[2]), int(parts[3]), int(parts[4])))
        f.close()
        return theater_list

def calculate_profits(theater_list):
        for thing in theater_list:

                thing.percentage_sold = int(((thing.sold_adult 
                + thing.sold_child + thing.sold_senior) / (float)thing.seats) * 100)

                thing.sum_income = ((thing.sold_adult * thing.price_adult) 
                + (thing.sold_child * thing.price_child) + (thing.sold_senior * thing.price_senior))

FILENAME = "teatrar.txt"
error_message = ""
if os.path.isfile(FILENAME):
        try:
                theater_list = create_list(FILENAME)
        except ValueError:
                error_message = "Filen 'teatrar.txt' är korrupt.\nProgrammet kan inte fortsätta."
else:
        error_message = "Filen 'teatrar.txt' existerar inte eller är inte i programmappen.\nProgrammet kan inte fortsätta."


mainframe = ttk.Frame(root, padding="3 3 12 12")
mainframe.grid(column=0, row=0, sticky=(N, W, E, S))
mainframe.columnconfigure(0, weight=1)
mainframe.rowconfigure(0, weight=1)

for child in mainframe.winfo_children(): child.grid_configure(padx=5, pady=5)

if error_message != "":
        ttk.Label(mainframe, text=error_message, justify="center").grid(column=1, row=1, sticky=(W, E))
else:
        theater_names_col = []
        theater_ticket_one = []
        theater_ticket_two = []
        theater_ticket_three = []
        theater_perc_row = []
        theater_profits_row = []

        ttk.Label(mainframe, text="Teatrar").grid(column=1, row=1, sticky=(W))
        ttk.Label(mainframe, text="Vuxenbiljetter").grid(column=2, row=1, sticky=(W))
        ttk.Label(mainframe, text="Barnbiljetter").grid(column=4, row=1, sticky=(W))
        ttk.Label(mainframe, text="Pensionärbiljetter").grid(column=6, row=1, sticky=(W))
        ttk.Label(mainframe, text="Procent fullsatt").grid(column=8, row=1, sticky=(W))
        ttk.Label(mainframe, text="Inkomst för kvällen").grid(column=10, row=1, sticky=(W))

        for x, y in enumerate(theater_list):
                ttk.Label(mainframe, text="st").grid(column=3, row=x+2, sticky=(W))
                ttk.Label(mainframe, text="st").grid(column=5, row=x+2, sticky=(W))
                ttk.Label(mainframe, text="st").grid(column=7, row=x+2, sticky=(W))
                ttk.Label(mainframe, text="%").grid(column=9, row=x+2, sticky=(W))
                ttk.Label(mainframe, text="kr").grid(column=11, row=x+2, sticky=(W))

                theater_names_col.append(ttk.Label(mainframe, text=y.name).grid(column=1, row=x+2, sticky=(W,E)))
                theater_ticket_one.append(ttk.Entry(mainframe, textvariable=y.sold_adult, justify="right").grid(column=2, row=x+2, sticky=(W,E)))
                theater_ticket_two.append(ttk.Entry(mainframe, textvariable=y.sold_child, justify="right").grid(column=4, row=x+2, sticky=(W,E)))
                theater_ticket_two.append(ttk.Entry(mainframe, textvariable=y.sold_senior, justify="right").grid(column=6, row=x+2, sticky=(W,E)))
                theater_perc_row.append(ttk.Label(mainframe, textvariable=y.percentage_sold, justify="right").grid(column=8, row=x+2, sticky=(W,E)))
                theater_profits_row.append(ttk.Label(mainframe, textvariable=y.sum_income, justify="right").grid(column=10, row=x+2, sticky=(W,E)))



root.mainloop()

Answer 1

听起来你需要确保你做浮动除法而不是整数除法。最简单的方法是将其中一个操作数转换为float：

# instead of
seats_filled = seats_sold / total_seats
# have
seats_filled = seats_sold / float(total_seats)

除了float的问题，使用IntVar，StringVar，BooleanVar和DoubleVar时，您必须使用.set(xxx)进行更改值.get()以检索当前值。

初学者：python，输出问题

1 个答案: