Python Tkinter - 2 combo boxes to filter dataset - first combobox lists states, second combobox lists only facilities in that state

Question

new to Tkinter... I am trying to make a mini app in Tkinter where the user selects the state of a medical facility in one combobox and the specific name of a facility in a second combobox from that state. 現在，我已經能夠讓我的 dataframe 過濾到在 state （第一個組合框）中選擇的值，但也不是設施。 我只希望之前選擇的 state 的設施出現在第二個 combobox 中。 目前，所有設施都出現在第二個 combobox 中，無論在 combobox 1 中選擇的 state 是什么。我知道我的代碼是錯誤的，但我想在這里嘗試一下。

Just as an example, if I selected 'oh' for the state in combobox 1, I would only want 'acme facility' and '123 healthcare' to appear in combobox 2. From there, if I selected '123 healthcare', my dataframe將僅由俄亥俄州名為“123 醫療保健”的設施組成。

基本上，如果我只是在 pandas （但我需要在 Tkinter 中完成）和我的 IDE 命令中工作，我希望它這樣做：

newdf = df.loc[((df['state'] == combobox1value) & (df['provname'] == combobox2value))]

任何幫助表示贊賞。

import pandas as pd
from tkinter import ttk
import numpy as np
from tkinter import Tk
import tkinter as tk

# function to get unique values
def unique(list1):
    x = np.array(list1)
    print(np.unique(x))


def on_click():
    val = n.get()
    if val == 'all':
        print(df)
    else:        
        df2 = df[ df['state'] == val ]
        print(df2)
        
def on_click2():
    val = n2.get()
    if val == 'all':
        print(df)
    else:
        df2 = df[ df['provname'] == val ]
        print(df2)
        df2.to_excel('test.xlsx')
        

df = pd.DataFrame({
    'logdate': ['1/1/2020','1/2/2022', '1/3/2022', '3/3/2021','5/13/2021','10/11/2019','1/5/2020'],
    'state': ['oh','oh', 'oh', 'ar','mi','ma','ms'],
    'provname': ['acme facility','123 healthcare', '123 healthcare','basic clinic','healthcare solutions','best clinic','one stop clinic'],
})

values = ['all'] + list(df['state'].unique())

dfx = df.loc[((df['state'] == 'oh') & (df['provname'] == '123 healthcare'))]
print(dfx)

# Creating tkinter window and set dimensions
window = tk.Tk() 
window.title('Combobox') 
window.geometry('500x250') 
  
# label text for title 
ttk.Label(window, text = "Main Menu",  
          background = 'cyan', foreground ="black",  
          font = ("Times New Roman", 15)).grid(row = 0, column = 1) 


#FILTER STATE - PART 1
# Set label 
ttk.Label(window, text = "Select the State :", 
          font = ("Times New Roman", 12)).grid(column = 0, 
          row = 5, padx = 6, pady = 25)


# Create Combobox
n = tk.StringVar() 
state = ttk.Combobox(window, width = 27, textvariable = n) 
  
# Adding combobox drop down list 
state['values'] = list(df['state'].unique())
state.grid(column = 1, row = 5)

state.current()

#FILTER FACILITY - PART 2

# Set label 
ttk.Label(window, text = "Select the Facility :", 
          font = ("Times New Roman", 12)).grid(column = 0, 
          row = 6, padx = 6, pady = 25)


ttk.Button(window, text = "OK", command=on_click).grid(column = 2, 
          row = 6, padx = 5, pady = 25)

# Create Combobox
n2 = tk.StringVar() 
prov = ttk.Combobox(window, width = 27, textvariable = n2) 
  
# Adding combobox drop down list 
prov['values'] = list(df['provname'].unique())
  
prov.grid(column = 1, row = 6)
prov.current()
window.mainloop() 

Answer 1

當您 select 您的 state 時，您需要更新您的第二個 combobox 中的值。 為此，您需要將第一個 combobox 中的"<<ComboboxSelected>>"事件與更改第二個 combobox 值的 function 綁定。

# Function for when first combobx selected
def state_selected(event):
    state_value = state.get()
    facilities = list(df.loc[df['state']==state_value]['provname'].unique())
    if facilities:
        prov['values']=facilities
    else:
        prov['values']=""
# Bind for when your first combobox is selected
state.bind("<<ComboboxSelected>>", state_selected)

在腳本中插入上面的代碼片段會給出：

import pandas as pd
from tkinter import ttk
import numpy as np
from tkinter import Tk
import tkinter as tk

# function to get unique values
def unique(list1):
    x = np.array(list1)
    print(np.unique(x))


def on_click():
    val = n.get()
    if val == 'all':
        print(df)
    else:        
        df2 = df[ df['state'] == val ]
        print(df2)
        
def on_click2():
    val = n2.get()
    if val == 'all':
        print(df)
    else:
        df2 = df[ df['provname'] == val ]
        print(df2)
        df2.to_excel('test.xlsx')
        

df = pd.DataFrame({
    'logdate': ['1/1/2020','1/2/2022', '1/3/2022', '3/3/2021','5/13/2021','10/11/2019','1/5/2020'],
    'state': ['oh','oh', 'oh', 'ar','mi','ma','ms'],
    'provname': ['acme facility','123 healthcare', '123 healthcare','basic clinic','healthcare solutions','best clinic','one stop clinic'],
})

values = ['all'] + list(df['state'].unique())

dfx = df.loc[((df['state'] == 'oh') & (df['provname'] == '123 healthcare'))]
print(dfx)

# Creating tkinter window and set dimensions
window = tk.Tk() 
window.title('Combobox') 
window.geometry('500x250') 
  
# label text for title 
ttk.Label(window, text = "Main Menu",  
          background = 'cyan', foreground ="black",  
          font = ("Times New Roman", 15)).grid(row = 0, column = 1) 


#FILTER STATE - PART 1
# Set label 
ttk.Label(window, text = "Select the State :", 
          font = ("Times New Roman", 12)).grid(column = 0, 
          row = 5, padx = 6, pady = 25)


# Create Combobox
n = tk.StringVar() 
state = ttk.Combobox(window, width = 27, textvariable = n) 
  
# Adding combobox drop down list 
state['values'] = list(df['state'].unique())
state.grid(column = 1, row = 5)

state.current()

#FILTER FACILITY - PART 2

# Set label 
ttk.Label(window, text = "Select the Facility :", 
          font = ("Times New Roman", 12)).grid(column = 0, 
          row = 6, padx = 6, pady = 25)


ttk.Button(window, text = "OK", command=on_click).grid(column = 2, 
          row = 6, padx = 5, pady = 25)

# Create Combobox
n2 = tk.StringVar() 
prov = ttk.Combobox(window, width = 27, textvariable = n2) 
  
# Function for when first combobx selected
def state_selected(event):
    state_value = state.get()
    facilities = list(df.loc[df['state']==state_value]['provname'].unique())
    if facilities:
        prov['values']=facilities
    else:
        prov['values']=""
# Bind for when your first combobox is selected
state.bind("<<ComboboxSelected>>", state_selected)

prov.grid(column = 1, row = 6)
prov.current()
window.mainloop()

對您的代碼的更多評論：

• prov.current()不會做任何事情，因為您沒有選擇索引
• 您不需要from tkinter import Tk因為您已經導入 tkinter