当用户输入与列表中的条目不匹配时生成“No Item Found”字符串(Tkinter)[Duplate]

5jvtdoz2  于 2022-09-18  发布在  Java
关注(0)|答案(1)|浏览(640)

这个问题在这里已经有答案：

How to check if all elements of a list match a condition?(5个答案)
两小时前就关门了。

目前正在开发一款F1 Tkinter gui应用程序，该应用程序允许用户输入司机(通过键入或从列表框中选择司机)，并显示相关统计数据。

目前，我正在尝试这样做：当用户输入与drivers_list中的条目不匹配时，列表框menu应该显示一个字符串“No Item Found”(或者更好的是，当前的USER_INPUT+“Not Found”)

我试过几种不同的方法。例如，在下面显示的代码中，我在check中放置了一个单独的Else-语句，其中输出了“No Item Found”，但结果是，menu中只显示了1个“No Item Found”，而是显示了多个。我想我知道为什么会显示多个，但我不知道解决方案。看起来问题确实出在check上，但我可能错了

以下是该问题的图片

代码如下：


# UI Design approach 4

from tkinter import *
from tkinter import ttk
from PIL import ImageTk, Image
from tkinter import messagebox
import requests
import json

root = Tk()
root.geometry("800x300")
root.title("F1 Desktop Application")
root.iconbitmap("formula1_logo.ico")

# generate 2022 drivers-list [can scale to drivers-list by changing the]

drivers_list_request = requests.get("http://ergast.com/api/f1/2022/drivers.json")

# initialize empty-list

drivers_list = []
drivers_list_object = json.loads(drivers_list_request.content)

for elements in drivers_list_object["MRData"]["DriverTable"]["Drivers"]:
    drivers_list.append(elements["givenName"] + " " + elements["familyName"])

# Update the Entry widget with the selected item in list

def check(e):

    v= entry_box.get()

    if v=='':
        hide_button(menu)

    else:
        data=[]
        for item in drivers_list:
            if v.lower() in item.lower():
                data.append(item)

            else:
                data.append("Item not Found")

        update(data)
        show_button(menu)

def update(data):
   # Clear the Combobox
   menu.delete(0, END)
   # Add values to the combobox
   for value in data:
        menu.insert(END,value)

def fillout(event):

    try:

        entry_box.delete(0,END)

        entry_box.insert(0,menu.get(menu.curselection()))

        hide_button(menu)

    #handle a complete deletion of entry-box via cursor double tap
    except:

        pass

def hide_button(widget):
    widget.grid_remove()

def show_button(widget):
    widget.grid()

def full_name():

    lower_user_input = grab_user_input()    

    response = requests.get("http://ergast.com/api/f1/drivers/{}.json".format(lower_user_input))

    response_object = json.loads(response.content)

    name = response_object["MRData"]["DriverTable"]["Drivers"][0]["givenName"] + " " + response_object["MRData"]["DriverTable"]["Drivers"][0]["familyName"]

    driver_name_label.configure(text = name)

def team():

    lower_user_input = grab_user_input()

    response = requests.get("http://ergast.com/api/f1/current/drivers/{}/constructors.json".format(lower_user_input))

    response_object = json.loads(response.content)

    team = response_object["MRData"]["ConstructorTable"]["Constructors"][0]["name"]

    team_api.configure(text = team)

def driver_code(): 

    lower_user_input = grab_user_input()    

    response = requests.get("http://ergast.com/api/f1/drivers/{}.json".format(lower_user_input))

    response_object = json.loads(response.content)

    code = response_object["MRData"]["DriverTable"]["Drivers"][0]["code"]

    code_api.configure(text = code)

def nationality(): 

    lower_user_input = grab_user_input()

    response = requests.get("http://ergast.com/api/f1/drivers/{}.json".format(lower_user_input))

    response_object = json.loads(response.content)

    nationality = response_object["MRData"]["DriverTable"]["Drivers"][0]["nationality"]

    nationality_api.configure(text = nationality)

def wins(): 

    lower_user_input = grab_user_input()

    response = requests.get("http://ergast.com/api/f1/drivers/{}/results/1.json".format(lower_user_input))

    response_object = json.loads(response.content)

    wins = response_object["MRData"]["total"]

    wins_api.configure(text = wins)

def poles(): 

    lower_user_input = grab_user_input()

    response = requests.get("http://ergast.com/api/f1/drivers/{}/qualifying/1.json".format(lower_user_input))

    response_object = json.loads(response.content)

    poles = response_object["MRData"]["total"]

    poles_api.configure(text = poles)

def podiums():

    lower_user_input = grab_user_input()

    #podiums is sum of 1st, 2nd, 3rd place finishes

    #####DRY principle; let's reuse the code from wins()
    ######noticing how maybe should create a separate function which "places" the widget
    #######for now, reuse the code

    #1st place finishes

    response = requests.get("http://ergast.com/api/f1/drivers/{}/results/1.json".format(lower_user_input))

    response_object = json.loads(response.content)

    #convert wins to int

    wins = int(response_object["MRData"]["total"])

    #2nd place finishes

    response_ii = requests.get("http://ergast.com/api/f1/drivers/{}/results/2.json".format(lower_user_input))

    response_ii_object = json.loads(response_ii.content)

    response_ii_amount = int(response_ii_object["MRData"]["total"])

    #3rd place finishes 

    response_iii = requests.get("http://ergast.com/api/f1/drivers/{}/results/3.json".format(lower_user_input))

    response_iii_object = json.loads(response_iii.content)

    response_iii_amount = int(response_iii_object["MRData"]["total"])

    podiums = str(wins + response_ii_amount + response_iii_amount)

    podiums_api.configure(text = podiums)

def championships():

    lower_user_input = grab_user_input()

    response = requests.get("http://ergast.com/api/f1/drivers/{}/driverStandings/1/seasons.json".format(lower_user_input))

    response_object = json.loads(response.content)

    championships = response_object["MRData"]["total"]

    championships_api.configure(text = championships)

def standing():

    lower_user_input = grab_user_input()

    response = requests.get("http://ergast.com/api/f1/current/drivers/{}/driverStandings.json".format(lower_user_input))

    response_object = json.loads(response.content)

    position = response_object["MRData"]["StandingsTable"]["StandingsLists"][0]["DriverStandings"][0]["position"]

    points = response_object["MRData"]["StandingsTable"]["StandingsLists"][0]["DriverStandings"][0]["points"]

    standing = "{} ({} pts)".format(position, points)

    standing_api.configure(text = standing)

def grab_user_input(): 

    #need to find a scalable way, since what if this was an app to search any driver in history? 

    edge_case_inputs = ["Max Verstappen", "Kevin Magnussen", "Mick Schumacher"]

    user_input = entry_box.get()

    if user_input in edge_case_inputs:

        lower_user_input = user_input.lower().replace(" ", "_")

        return lower_user_input

    #very unique case which can't be modularsed

    elif user_input == "Nyck de Vries":

        lower_user_input = "de_vries"

    else:

        lower_user_input = user_input.lower().split(" ")[1]

        return lower_user_input

def search():

    #slow run-time is simply due to the multiple api calls made
    hide_button(menu)

    #fast-run time
    full_name()

    #fast-run time
    team()

    #fast-run time
    driver_code()

    #fast-run time
    nationality()

    #fast-run time
    wins()

    #fast-run time
    poles()

    #fast-run time
    podiums()

    #fast-run time
    championships()

    #fast-run time
    standing()

    show_button(main_frame)

left_frame = LabelFrame(root, width = 275, height = 300)
left_frame.grid(row = 1, column = 0, sticky = SE)
left_frame.grid_propagate(False)

search_label = Label(left_frame, text = "Search Driver", font = ("Arial bold", 12))
search_label.grid(row = 0, column = 0, pady = 10)

entry_box = Entry(left_frame, bd = 5)
entry_box.grid(row = 1, column = 0, padx = 35, pady = 40)
entry_box.bind('<KeyRelease>',check)

# pass something into the lamda

search_button = Button(left_frame, text = "search", command = search)
search_button.grid(row = 1, column = 1, padx = 15)

menu= Listbox(left_frame, height = 7)
menu.grid(row = 2, column = 0)
menu.bind("<<ListboxSelect>>",fillout)

main_frame = LabelFrame(root, width = 575, height = 300)
main_frame.grid(row = 1, column = 1, sticky = SE)
main_frame.grid_propagate(False)

driver_name_label = Label(main_frame, text = "", font = ("Arial", 15))
driver_name_label.grid(row = 0, column = 0,pady = 30)

team_label = Label(main_frame, text = "TEAM", font = ("Arial", 10))
team_label.grid(row = 1, column = 0, sticky = W)

team_api = Label(main_frame, text = "", font = ("Arial", 10))
team_api.grid(row = 1, column = 1)

nationality_label = Label(main_frame, text = "NATIONALITY", font = ("Arial", 10))
nationality_label.grid(row = 2, column = 0, sticky = W)

nationality_api = Label(main_frame, text = "", font = ("Arial", 10))
nationality_api.grid(row = 2, column = 1, sticky = W)

driver_code_label = Label(main_frame, text = "DRIVER CODE", font = ("Arial", 10))
driver_code_label.grid(row = 3, column = 0, sticky = W)

code_api = Label(main_frame, text = "", font = ("Arial", 10))
code_api.grid(row = 3, column = 1, sticky = W)

wins_label = Label(main_frame, text = "WINS", font = ("Arial", 10))
wins_label.grid(row = 4, column = 0, sticky = W)

wins_api = Label(main_frame, text = "", font = ("Arial", 10))
wins_api.grid(row = 4, column = 1, sticky = W)

podiums_label = Label(main_frame, text = "PODIUMS", font = ("Arial", 10))
podiums_label.grid(row = 1, column = 2, sticky = W, padx = 15)

podiums_api = Label(main_frame, text = "", font = ("Arial", 10))
podiums_api.grid(row = 1, column = 3, padx = 15,  sticky = W)

poles_label = Label(main_frame, text = "POLES", font = ("Arial", 10))
poles_label.grid(row = 2, column = 2, sticky = W, padx = 15)

poles_api = Label(main_frame, text = "", font = ("Arial", 10))
poles_api.grid(row = 2, column = 3, sticky = W, padx = 15)

world_championships_label = Label(main_frame, text = "WORLD CHAMPIONSHIPS", font = ("Arial", 10))
world_championships_label.grid(row = 3, column = 2, padx = 15, sticky = W)

championships_api = Label(main_frame, text = "", font = ("Arial", 10))
championships_api.grid(row = 3, column = 3, padx = 15, sticky = W)

current_standing_label = Label(main_frame, text = "F1 2022 STANDING", font = ("Arial", 10))
current_standing_label.grid(row = 4, column = 2, padx = 15, sticky = W)

standing_api = Label(main_frame, text = "", font = ("Arial", 10))
standing_api.grid(row = 4, column = 3, padx = 15, sticky = W)   

hide_button(menu)
hide_button(main_frame)

root.mainloop()

如果任何人有后续问题需要澄清，请让我知道！

谢谢，萨夫万

python

1条答案

按热度按时间
5q4ezhmt

5q4ezhmt1#

Instead of adding "Item not found" to data in every iteration of the loop, don't add it until after the loop, if data is empty.

if v.lower() in item.lower():
    data.append(item)

# no else part

if not data:  # data is empty
    data.append("Item not found")
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