Python Articles - Page 410 of 829

The Treeview widget is designed to display the data in a hierarchical structure. It can be used to display the directories, child directories or files in the form of a list. The items present in the Listbox are called Listbox items.The treeview widget includes many properties and attributes through which we can change or modify its default properties. We can change the background of a treeview widget by defining the 'background' property in the constructor.Example# Import the required libraries from tkinter import * from tkinter import ttk # Create an instance of tkinter frame or window win = Tk() ... Read More

To create a list of items with a scrollable widget, Tkinter provides the Listbox widget. With the Listbox widget, we can create a list that contains items called List items. Depending upon the configuration, the user can select one or multiple items from the list.If we want to clear the items in the Listbox widget, we can use the delete(0, END) method. Besides deleting all the items in the Listbox, we can delete a single item as well by selecting an item from the Listbox, i.e., by using currselection() method to select an item and delete it using the delete() ... Read More

The treeview widget in Tkinter provides a way to represent the data in a hierarchical structure. With the Treeview widget, we can insert our data in the form of a table. The table can have rows and columns in which we can insert the data instantly.We can also configure the properties of the treeview widget such as its color, size, column width, height, row width & height, etc. To set the row height of the Treeview widget, you can create an instance of ttk themed widget where you can specify the rowheight property. The rowheight property will add internal padding ... Read More

The Window Manager is a toolkit available in Tcl/Tk that can be accessed with the command 'wm'. The 'wm' command allows you to set the appearance and geometry of the Tkinter window. We can control the title, color, size, and other attributes with this command. The 'wm' command has numerous keywords that can be used to modify its property.Example# Import the required library from tkinter import * from tkinter import ttk from tkinter import messagebox # Create an instance of tkinter frame win=Tk() # Set the geometry win.geometry("700x350") Label(win, text="This window is disabled.",    font=("Calibri, 24")).pack() ... Read More

The Tkinter Menu widget is used to create a dropdown menu in an application. With menu widgets, we can select an item from the menu and run a specific task in the application.In many applications, we see a dotted separator line that separates the menu items in the menu. The separator separates the menu item of one type from another, and we can use it to visualize the hierarchy of the menu items. To create a separator among the menu items, you can use the add_separator() method.Example# Import the required libraries from tkinter import * from tkinter import ttk ... Read More

Consider a case for creating a GUI application such that when we click on the window with a mouse button, it stores the coordinates and draws a dot. Tkinter provides events that allow the user to bind the keys or buttons with the functions.To draw a dot on click event, we can follow these general steps −Create a canvas widget and pack it to display in the window.Define a function draw_dot() that works as the event when the user does the click event.Create a global variable that counts the number of clicks in the canvas.If the count becomes two, then ... Read More

Consider a case for creating a GUI application such that when we click on the window with a mouse button, it stores the coordinates and creates a line between two given points. Tkinter provides events that allow the user to bind the keys or buttons with the functions.To draw a line between two points, we can follow these general steps, Create a canvas widget and pack it to display in the window.Define a function draw_line() that works as the event when the user does the click event.Create a global variable that counts the number of clicks in the canvas.If the ... Read More

The frame widget in Tkinter works like a container where we can place widgets and all the other GUI components. To change the frame width dynamically, we can use the configure() method and define the width property in it.ExampleIn this example, we have created a button that is packed inside the main window and whenever we click the button, it will update the width of the frame.# Import the required libraries from tkinter import * from tkinter import ttk # Create an instance of tkinter frame or window win=Tk() # Set the size of the window win.geometry("700x350") ... Read More

A color gradient defines the range of position-dependent colors. To be more specific, if you want to create a rectangular scale in an application that contains some color ranges in it (gradient), then we can follow these steps −Create a rectangle with a canvas widget and define its width and height.Define a function to fill the color in the range. To fill the color, we can use hex values inside a tuple.Iterate over the range of the color and fill the rectangle with it.Example# Import the required libraries from tkinter import * from tkinter import ttk # Create an ... Read More

To create a Swarm Plot with Matplotlib, we can take the following steps −Set the figure size and adjust the padding between and around the subplots.Create a Pandas dataframe, i.e., a two-dimensional, size-mutable, potentially heterogeneous tabular data.Initialize the plotter, swarmplot.To plot the boxplot, use boxplot() method.To display the figure, use show() method.Exampleimport seaborn as sns import matplotlib.pyplot as plt import pandas as pd import numpy as np plt.rcParams["figure.figsize"] = [7.50, 3.50] plt.rcParams["figure.autolayout"] = True data = pd.DataFrame({"Box1": np.arange(10),                      "Box2": np.arange(10)}) ax = sns.swarmplot(x="Box1", y="Box2", data=data, zorder=0) ... Read More