Sample code for the article on Tkinter

python-gui-tkinter/README.md

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+# Python GUI Programming: Your Tkinter Tutorial
+
+This folder provides the code examples for the Real Python tutorial [Python GUI Programming: Your Tkinter Tutorial](https://realpython.com/python-gui-tkinter/).

python-gui-tkinter/address_form.py

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+import tkinter as tk
+
+root = tk.Tk()
+root.title("Address Entry Form")
+
+frm_form = tk.Frame(relief=tk.SUNKEN, borderwidth=3)
+frm_form.pack()
+
+field_labels = [
+    "First Name:",
+    "Last Name:",
+    "Address Line 1:",
+    "Address Line 2:",
+    "City:",
+    "State/Province:",
+    "Postal Code:",
+    "Country:",
+]
+
+for index, text in enumerate(field_labels):
+    tk.Label(
+        master=frm_form,
+        text=text,
+    ).grid(row=index, column=0, sticky="e")
+    tk.Entry(
+        master=frm_form,
+        width=50,
+    ).grid(row=index, column=1)
+
+frm_buttons = tk.Frame()
+frm_buttons.pack(fill=tk.X, ipadx=5, ipady=5)
+
+btn_submit = tk.Button(master=frm_buttons, text="Submit")
+btn_submit.pack(side=tk.RIGHT, padx=10, ipadx=10)
+
+btn_clear = tk.Button(master=frm_buttons, text="Clear")
+btn_clear.pack(side=tk.RIGHT, ipadx=10)
+
+root.mainloop()

python-gui-tkinter/app.py

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+import tkinter as tk
+
+root = tk.Tk()
+
+greeting = tk.Label(
+    text="Hello, Tkinter",
+    fg="white",
+    bg="black",
+    width=10,
+    height=10,
+)
+greeting.pack()
+
+root.mainloop()

python-gui-tkinter/button.py

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+import tkinter as tk
+
+root = tk.Tk()
+
+button = tk.Button(
+    text="Click me!",
+    width=25,
+    height=5,
+    fg="red",
+)
+button.pack()
+
+root.mainloop()

python-gui-tkinter/click_counter_v1.py

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+import tkinter as tk
+
+root = tk.Tk()
+root.geometry("200x80")
+
+counter = 0
+
+
+def handle_click(event):
+    global counter
+    counter += 1
+    label.config(text="Click Count: " + str(counter))
+
+
+label = tk.Label(root, text="Click Count: 0")
+label.pack()
+
+button = tk.Button(text="Click me!")
+button.pack()
+
+
+button.bind("<Button-1>", handle_click)
+
+root.mainloop()

python-gui-tkinter/click_counter_v2.py

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+import tkinter as tk
+
+root = tk.Tk()
+root.geometry("200x80")
+
+counter = 0
+
+
+def handle_click():
+    global counter
+    counter += 1
+    label.config(text="Click Count: " + str(counter))
+
+
+label = tk.Label(root, text="Click Count: 0")
+label.pack()
+
+button = tk.Button(text="Click me!", command=handle_click)
+button.pack()
+
+
+root.mainloop()

python-gui-tkinter/editor.py

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+import tkinter as tk
+
+root = tk.Tk()
+root.title("Simple Text Editor")
+
+frame = tk.Frame(root)
+frame.pack(side=tk.LEFT, fill=tk.Y)
+
+tk.Button(
+    frame,
+    text="Open",
+).pack(fill=tk.X, padx=5, pady=5)
+tk.Button(
+    frame,
+    text="Save As...",
+).pack(fill=tk.X, padx=5, pady=5)
+
+txt = tk.Text(root)
+txt.pack(side=tk.RIGHT, fill=tk.BOTH, expand=True)
+
+root.mainloop()

python-gui-tkinter/editor_final.py

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+import tkinter as tk
+from tkinter.filedialog import askopenfilename, asksaveasfilename
+
+FILE_TYPES = [("Text Files", "*.txt"), ("All Files", "*.*")]
+
+
+root = tk.Tk()
+root.title("Simple Text Editor")
+
+
+def open_file():
+    path = askopenfilename(filetypes=FILE_TYPES)
+    if path:
+        with open(path, mode="r", encoding="utf-8") as text_file:
+            txt.delete("1.0", tk.END)
+            txt.insert(tk.END, text_file.read())
+
+
+def save_file():
+    path = asksaveasfilename(defaultextension=".txt", filetypes=FILE_TYPES)
+    if path:
+        with open(path, mode="w", encoding="utf-8") as text_file:
+            text_file.write(txt.get("1.0", tk.END))
+
+
+frame = tk.Frame(root)
+frame.pack(side=tk.LEFT, fill=tk.Y)
+
+tk.Button(
+    frame,
+    text="Open",
+    command=open_file,
+).pack(fill=tk.X, padx=5, pady=5)
+tk.Button(
+    frame,
+    text="Save As...",
+    command=save_file,
+).pack(fill=tk.X, padx=5, pady=5)
+
+txt = tk.Text(root)
+txt.pack(side=tk.RIGHT, fill=tk.BOTH, expand=True)
+
+
+root.mainloop()

python-gui-tkinter/entry.py

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+import tkinter as tk
+
+root = tk.Tk()
+
+label = tk.Label(text="Name")
+entry = tk.Entry()
+label.pack()
+entry.pack()
+
+root.mainloop()

python-gui-tkinter/frame.py

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+import tkinter as tk
+
+root = tk.Tk()
+
+frame = tk.Frame(master=root)
+frame.pack()
+
+root.mainloop()

python-gui-tkinter/frame_borders.py

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+import tkinter as tk
+
+EFFECTS = (
+    tk.FLAT,
+    tk.SUNKEN,
+    tk.RAISED,
+    tk.GROOVE,
+    tk.RIDGE,
+)
+
+root = tk.Tk()
+
+for effect in EFFECTS:
+    frame = tk.Frame(master=root, relief=effect, borderwidth=5)
+    frame.pack(side=tk.LEFT)
+    label = tk.Label(master=frame, text=effect)
+    label.pack()
+
+root.mainloop()

python-gui-tkinter/frames_v1.py

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+import tkinter as tk
+
+root = tk.Tk()
+
+frame_a = tk.Frame(master=root)
+frame_b = tk.Frame(master=root)
+
+label_a = tk.Label(master=frame_a, text="I'm in Frame A")
+label_a.pack()
+
+label_b = tk.Label(master=frame_b, text="I'm in Frame B")
+label_b.pack()
+
+frame_a.pack()
+frame_b.pack()
+
+root.mainloop()

python-gui-tkinter/frames_v2.py

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+import tkinter as tk
+
+root = tk.Tk()
+
+frame_a = tk.Frame(master=root)
+frame_b = tk.Frame(master=root)
+
+label_a = tk.Label(master=frame_a, text="I'm in Frame A")
+label_a.pack()
+
+label_b = tk.Label(master=frame_b, text="I'm in Frame B")
+label_b.pack()
+
+# Swap the order of `frame_a` and `frame_b`
+frame_b.pack()
+frame_a.pack()
+
+root.mainloop()

python-gui-tkinter/grid.py

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+import tkinter as tk
+
+root = tk.Tk()
+
+for i in range(3):
+    for j in range(3):
+        frame = tk.Frame(master=root, relief=tk.RAISED, borderwidth=1)
+        frame.grid(row=i, column=j)
+        label = tk.Label(master=frame, text=f"Row {i}\nColumn {j}")
+        label.pack()
+
+root.mainloop()

python-gui-tkinter/grid_centered_labels.py

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+import tkinter as tk
+
+root = tk.Tk()
+root.columnconfigure(0, minsize=250)
+root.rowconfigure([0, 1], minsize=100)
+
+label1 = tk.Label(text="A")
+label1.grid(row=0, column=0)
+
+label2 = tk.Label(text="B")
+label2.grid(row=1, column=0)
+
+root.mainloop()

python-gui-tkinter/grid_expand.py

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+import tkinter as tk
+
+root = tk.Tk()
+
+for i in range(3):
+    root.columnconfigure(i, weight=1, minsize=75)
+    root.rowconfigure(i, weight=1, minsize=50)
+
+    for j in range(0, 3):
+        frame = tk.Frame(master=root, relief=tk.RAISED, borderwidth=1)
+        frame.grid(row=i, column=j, padx=5, pady=5)
+        label = tk.Label(master=frame, text=f"Row {i}\nColumn {j}")
+        label.pack(padx=5, pady=5)
+
+root.mainloop()

python-gui-tkinter/grid_padding.py

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+import tkinter as tk
+
+root = tk.Tk()
+
+for i in range(3):
+    for j in range(3):
+        frame = tk.Frame(master=root, relief=tk.RAISED, borderwidth=1)
+        frame.grid(row=i, column=j, padx=5, pady=5)
+        label = tk.Label(master=frame, text=f"Row {i}\nColumn {j}")
+        label.pack(padx=5, pady=5)
+
+root.mainloop()

python-gui-tkinter/grid_sticky_combined.py

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+import tkinter as tk
+
+root = tk.Tk()
+
+root.rowconfigure(0, minsize=50)
+root.columnconfigure([0, 1, 2, 3], minsize=50)
+
+label1 = tk.Label(text="1", bg="black", fg="white")
+label2 = tk.Label(text="2", bg="black", fg="white")
+label3 = tk.Label(text="3", bg="black", fg="white")
+label4 = tk.Label(text="4", bg="black", fg="white")
+
+label1.grid(row=0, column=0)
+label2.grid(row=0, column=1, sticky="ew")
+label3.grid(row=0, column=2, sticky="ns")
+label4.grid(row=0, column=3, sticky="nsew")
+
+root.mainloop()

python-gui-tkinter/grid_sticky_corners.py

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+import tkinter as tk
+
+root = tk.Tk()
+root.columnconfigure(0, minsize=250)
+root.rowconfigure([0, 1], minsize=100)
+
+label1 = tk.Label(text="A")
+label1.grid(row=0, column=0, sticky="ne")
+
+label2 = tk.Label(text="B")
+label2.grid(row=1, column=0, sticky="sw")
+
+root.mainloop()

python-gui-tkinter/grid_sticky_north.py

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+import tkinter as tk
+
+root = tk.Tk()
+root.columnconfigure(0, minsize=250)
+root.rowconfigure([0, 1], minsize=100)
+
+label1 = tk.Label(text="A")
+label1.grid(row=0, column=0, sticky="n")
+
+label2 = tk.Label(text="B")
+label2.grid(row=1, column=0, sticky="n")
+
+root.mainloop()

python-gui-tkinter/keypress.py

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+import tkinter as tk
+
+root = tk.Tk()
+root.geometry("200x80")
+
+
+label = tk.Label(root, text="", font=("Arial", 16))
+label.pack(pady=20)
+
+current_text = []
+
+
+def handle_keypress(event):
+    if event.char.isprintable():
+        current_text.append(event.char)
+    label.config(text="".join(current_text))
+
+
+root.bind("<KeyPress>", handle_keypress)
+
+root.mainloop()