Python Listbox delete text

In this video you will learn to delete a selected item in a listbox tkinter widget using Python3

# Craig Hammond 2016
from tkinter import 
from tkinter import ttk

class Application(Frame):
    
    def __init__(self, master):
        """ Initialize the Frame """
        ttk.Frame.__init__(self, master)
 
        self.grid()
        self.create_widgets()

    def create_widgets(self):
        # create the button widgets
        self.btnAddSymbol = ttk.Button(self, text = "Add Symbol", command=self.add_symbol).grid(row=0, column=0, sticky=W)    
        self.tbEntry = Entry(self, font=('', 12), textvariable=varEntry).grid(row=0, column=1, sticky=W)
        self.btnDeleteSymbol = ttk.Button(self, text = 'Remove Symbol', command=self.delete_symbol).grid(row=0, column=2, sticky=W)

        # create listbox widget
        self.listbox1 = Listbox(self, font=('', 12))
        #self.listbox1.bind('<ButtonRelease-1>', self.select_item) # Don't use  it won't work
        self.listbox1.bind('<<ListboxSelect>>', self.select_item)
        self.listbox1.insert(1, 'EVIL')
        self.listbox1.insert(2, 'SBUX')
        self.listbox1.insert(3, 'FB')
        self.listbox1.grid(row=1, column=0)
        
    def add_symbol(self):
        to_add = varEntry.get() # gets text from textbox or Entry box
        # change 'end' to 0 to add it to the beginning
        self.listbox1.insert('end', to_add) # adds text to listbox 
        
    def select_item(self, event):
        pass
        
    def delete_symbol(self):
        current_selection = self.listbox1.curselection() # gets the position of the selected item
        # print (current_selection)
        self.listbox1.delete(current_selection) # deletes the selected item

root = Tk()
varEntry = StringVar(root, value="SCTY")
app = Application(root)
root.mainloop()

Python Listbox Add Text

from tkinter import *
from tkinter import ttk

class Application(Frame):
    
    def __init__(self, master):
        """ Initialize the Frame"""
        ttk.Frame.__init__(self, master)
 
        self.grid()      
        self.create_widgets()

    def create_widgets(self):
        # create the button widgets
        self.btnAddSymbol = ttk.Button(self, text = "Add Symbol", command=self.add_symbol).grid(row=0, column=0, sticky=W)    
        self.tbEntry = Entry(self, font=('', 12), textvariable=varEntry).grid(row=0, column=1, sticky=W)
        self.btnDeleteSymbol = ttk.Button(self, text = 'Remove Symbol', command=self.delete_symbol).grid(row=0, column=2, sticky=W)

        # create listbox widget
        self.listbox1 = Listbox(self, font=('', 12))
        #self.listbox1.bind('<ButtonRelease-1>', self.select_item) # Don't use <Button-1> it won't work
        self.listbox1.bind('<<ListboxSelect>>', self.select_item)
        self.listbox1.insert(1, 'EVIL')
        self.listbox1.insert(2, 'SBUX')
        self.listbox1.insert(3, 'FB')
        self.listbox1.grid(row=1, column=0)
        
    def add_symbol(self):
        to_add = varEntry.get() # gets text from textbox or Entry box
        # change 'end' to 0 to add it to the beginning of the list
        self.listbox1.insert('end', to_add) # adds text to listbox 
        
    def select_item(self, event):
        pass
        
    def delete_symbol(self):
        pass

root = Tk()
varEntry = StringVar(root, value="SCTY")
app = Application(root)
root.mainloop()

Python Tree view search cell contents

Python treeview search for cell value and change cell contents

# Craig Hammond 2016
from tkinter import *
from tkinter import ttk

class Application(Frame):
    
    def __init__(self, master):
        """ Initialize the Frame"""
        ttk.Frame.__init__(self, master)
        self.grid()
        self.create_widgets()

    def create_widgets(self):
        self.btnConnect = ttk.Button(self, text = "Search Symbol", command=self.search_symbol).grid(row=0, column=0, sticky=W)
        self.btnDisconnect = ttk.Button(self, text = "Add data", command=self.add_data).grid(row=0, column=1, sticky=W)
        self.btnCancelMktData = ttk.Button(self, text = 'Remove All', command=self.remove_all).grid(row=0, column=2, sticky=W)
        self.button_edit = Button(self, font=('',12), text="select row", width=7, command=self.add_data)
        self.button_edit.grid(row=0, column=4)
        
        # create Treeview widget to hold values in a table
        self.tv = ttk.Treeview(root)    

        self.tv = ttk.Treeview(self,  height=8)
        self.tv['columns'] = ('id', 'symbol', 'price', 'trigger', 'shares', 'side', 'type', 'status', 'fill')
        self.tv.heading("#0", text='Time', anchor='w')
        self.tv.column("#0", stretch=NO, width=5, anchor="w")
        self.tv.heading('id', text='ID')
        self.tv.column('id', anchor='center', width=70)
        self.tv.heading('symbol', text='Symbol')
        self.tv.column('symbol', anchor='center', width=70)
        self.tv.heading('price', text='Price')
        self.tv.column('price', anchor='center', width=70)
        self.tv.heading('trigger', text='Trigger')
        self.tv.column('trigger', anchor='center', width=70)
        self.tv.heading('shares', text='Shares')
        self.tv.column('shares', anchor='center', width=130)
        self.tv.heading('side', text='Side')
        self.tv.column('side', anchor='center', width=70)
        self.tv.heading('type', text='Type')
        self.tv.column('type', anchor='center', width=70)
        self.tv.heading('status', text='Status')
        self.tv.column('status', anchor='center', width=100)
        self.tv.heading('fill', text='Fill')
        self.tv.column('fill', anchor='center', width=70)
        self.tv.bind('<ButtonRelease-1>', self.select_item) 
        self.tv.grid(row=1, column=0, columnspan=6, padx=5, pady=5)
        self.treeview = self.tv
##        self.ysb = ttk.Scrollbar(self, orient='vertical', command=self.tv.yview)
##        self.xsb = ttk.Scrollbar(self, orient='horizontal', command=self.tv.xview)
##        self.tv.configure(yscroll=self.ysb.set, xscroll=self.xsb.set)
##        self.ysb.grid(row=1, column=7, sticky='ns')
##        self.xsb.grid(row=2, column=0, sticky='ew')
        
        ttk.Style().configure("Treeview", font= ('', 11), background="black", 
        foreground="white", fieldbackground="yellow")

        self.tv.insert("","end",text = "Person",values = ("1254","MSFT","39.39", "", "0/200", "BUY", "LMT", "Filled", "39.39"), tags='hot')
        self.tv.insert("","end",text = "Animal",values = ("1255","MSFT","39.58", ".10", "0/200", "SELL", "TRAIL", "PreSubmitted", "0.00"), tags='cold')
        self.tv.insert("","end",text = "Name",values = ("1256","MSFT","39.58", "", "0/200", "SELL", "LMT", "Submitted", "0.00"), tags='pizza')
        self.tv.insert("","end",text = "Evil Corp",values = ("1258","NFLX","102.55", "", "0/300", "SELL", "LMT", "Submitted", "0.00"), tags='tacos')
        
    def select_item(self, a):   # added self and a
        pass

    def remove_all(self):
       pass
                
    def search_symbol(self):
        pass

    def add_data(self):
        x = self.tv.get_children() # variable to store the dictionary string
        if x != '()': # checks if there is something in the first row
            for item in x:
                values_Values = (self.tv.item(item)["values"]) # variable to hold the cell values
                tags_values = (self.tv.item(item)["tags"]) # variable to hold the tag values
                if values_Values[1] == "NFLX": # looks for value 1254
                    self.tv.item(item, values=(values_Values[0], # value from existing string
                                                            values_Values[1],
                                                            values_Values[2],
                                                            values_Values[3],
                                                            'Yippie Ki Evil Corp', # value to be changed 4th cell
                                                            values_Values[5],
                                                            values_Values[6],
                                                            values_Values[7],
                                                            values_Values[8]
                                                            ), tags=tags_values) # changes the tag value to bite
                    
                    
root = Tk()
app = Application(root)
root.mainloop()

Python Code Treeview Select Row

In this video you can observe how the operation of the click event works when you click on a row in the tree view widget

# Craig Hammond 2016
from tkinter import *
from tkinter import ttk

class Application(Frame):
    
    def __init__(self, master):
        """ Initialize the Frame"""
        ttk.Frame.__init__(self, master)
 
        self.grid()
        self.create_widgets()

    def create_widgets(self):
        self.btnConnect = ttk.Button(self, text = "Search Symbol", command=self.search_symbol).grid(row=0, column=0, sticky=W)
        self.btnDisconnect = ttk.Button(self, text = "Add data", command=self.add_data).grid(row=0, column=1, sticky=W)
        self.btnCancelMktData = ttk.Button(self, text = 'Remove All', command=self.remove_all).grid(row=0, column=2, sticky=W)
        self.button_edit = Button(self, font=('',12), text="select row", width=7, command=self.add_data)
        self.button_edit.grid(row=0, column=4)
        
        # create Treeview widget to hold values in a table
        self.tv = ttk.Treeview(root)    

        # create Treeview 
        self.tv = ttk.Treeview(self,  height=8)
        self.tv['columns'] = ('id', 'symbol', 'price', 'trigger', 'shares', 'side', 'type', 'status', 'fill')
        self.tv.heading("#0", text='Time', anchor='w')
        self.tv.column("#0", stretch=NO, width=5, anchor="w")
        self.tv.heading('id', text='ID')
        self.tv.column('id', anchor='center', width=70)
        self.tv.heading('symbol', text='Symbol')
        self.tv.column('symbol', anchor='center', width=70)
        self.tv.heading('price', text='Price')
        self.tv.column('price', anchor='center', width=70)
        self.tv.heading('trigger', text='Trigger')
        self.tv.column('trigger', anchor='center', width=70)
        self.tv.heading('shares', text='Shares')
        self.tv.column('shares', anchor='center', width=100)
        self.tv.heading('side', text='Side')
        self.tv.column('side', anchor='center', width=70)
        self.tv.heading('type', text='Type')
        self.tv.column('type', anchor='center', width=70)
        self.tv.heading('status', text='Status')
        self.tv.column('status', anchor='center', width=100)
        self.tv.heading('fill', text='Fill')
        self.tv.column('fill', anchor='center', width=70)
        self.tv.bind('<ButtonRelease-1>', self.select_item) 
        self.tv.grid(row=1, column=0, columnspan=6, padx=5, pady=5)
        self.treeview = self.tv
##        self.ysb = ttk.Scrollbar(self, orient='vertical', command=self.tv.yview)
##        self.xsb = ttk.Scrollbar(self, orient='horizontal', command=self.tv.xview)
##        self.tv.configure(yscroll=self.ysb.set, xscroll=self.xsb.set)
##        self.ysb.grid(row=1, column=7, sticky='ns')
##        self.xsb.grid(row=2, column=0, sticky='ew')
        
        ttk.Style().configure("Treeview", font= ('', 11), background="#383838", 
        foreground="white", fieldbackground="yellow")

        self.tv.insert("","end",text = "Person",values = ("1254","MSFT","39.39", "", "0/200", "BUY", "LMT", "Filled", "39.39"), tags='hot')
        self.tv.insert("","end",text = "Animal",values = ("1255","MSFT","39.58", ".10", "0/200", "SELL", "TRAIL", "PreSubmitted", "0.00"), tags='cold')
        self.tv.insert("","end",text = "Name",values = ("1256","MSFT","39.58", "", "0/200", "SELL", "LMT", "Submitted", "0.00"), tags='pizza')
        self.tv.insert("","end",text = "Evil Corp",values = ("1258","NFLX","102.55", "", "0/300", "SELL", "LMT", "Submitted", "0.00"), tags='tacos')
        
    def select_item(self, a):   # added self and a (event)
        test_str_library = self.tv.item(self.tv.selection())# gets all the values of the selected row
        print ('The test_str = ', type(test_str_library), test_str_library,  '\n')  # prints a dictionay of the selected row
        item = self.tv.selection()[0] # which row did you click on
        print ('item clicked ', item) # variable that represents the row you clicked on
        print (self.tv.item(item)['values'][0]) # prints the first value of the values (the id value)

    def remove_all(self):
       pass
                
    def search_symbol(self):
        pass

    def add_data(self):
        pass

root = Tk()       
app = Application(root)
root.mainloop()