Code for How to Make a Text Editor using Tkinter in Python Tutorial

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text_editor.py

# Import from tkinter import * from tkinter import scrolledtext from tkinter import filedialog import ctypes import sys # Increas Dots Per inch so it looks sharper ctypes.windll.shcore.SetProcessDpiAwareness(True) # Setup Variables appName = 'Simple Text Editor' nofileOpenedString = 'New File' currentFilePath = nofileOpenedString # Viable File Types, when opening and saving files. fileTypes = [("Text Files","*.txt"), ("Markdown","*.md")] # Tkinter Setup window = Tk() # Set the first column to occupy 100% of the width window.grid_columnconfigure(0, weight=1) window.title(appName + " - " + currentFilePath) # Window Dimensions in Pixel window.geometry('500x400') # Handler Functions def fileDropDownHandeler(action): global currentFilePath # Opening a File if action == "open": file = filedialog.askopenfilename(filetypes = fileTypes) window.title(appName + " - " + file) currentFilePath = file with open(file, 'r') as f: txt.delete(1.0,END) txt.insert(INSERT,f.read()) # Making a new File elif action == "new": currentFilePath = nofileOpenedString txt.delete(1.0,END) window.title(appName + " - " + currentFilePath) # Saving a file elif action == "save" or action == "saveAs": if currentFilePath == nofileOpenedString or action=='saveAs': currentFilePath = filedialog.asksaveasfilename(filetypes = fileTypes) with open(currentFilePath, 'w') as f: f.write(txt.get('1.0','end')) window.title(appName + " - " + currentFilePath) def textchange(event): window.title(appName + " - *" + currentFilePath) # Widgets # Text Area txt = scrolledtext.ScrolledText(window, height=999) txt.grid(row=1,sticky=N+S+E+W) # Bind event in the widget to a function txt.bind('<KeyPress>', textchange) # Menu menu = Menu(window) # set tearoff to 0 fileDropdown = Menu(menu, tearoff=False) # Add Commands and and their callbacks fileDropdown.add_command(label='New', command=lambda: fileDropDownHandeler("new")) fileDropdown.add_command(label='Open', command=lambda: fileDropDownHandeler("open")) # Adding a seperator between button types. fileDropdown.add_separator() fileDropdown.add_command(label='Save', command=lambda: fileDropDownHandeler("save")) fileDropdown.add_command(label='Save as', command=lambda: fileDropDownHandeler("saveAs")) menu.add_cascade(label='File', menu=fileDropdown) # Set Menu to be Main Menu window.config(menu=menu) # Enabling "open with" by looking if the second argument was passed. if len(sys.argv) == 2: currentFilePath = sys.argv[1] window.title(appName + " - " + currentFilePath) with open(currentFilePath, 'r') as f: txt.delete(1.0,END) txt.insert(INSERT,f.read()) # Main Loop window.mainloop()