tkinter Ttk widgets Treeview: Basic example

Example

This widget is used to display items with hierarchy. For instance, windows explorer can be reproduced in this way. Some nice tables can be also done using treeview widget.

Create the widget

tree=ttk.Treeview(master)

Definition of the columns

You can define how many columns, their width and minimum width when the user tries to stretch it. By defining stretch=tk.NO, the user cannot modify the width of the column.

tree["columns"]=("one","two","three")
tree.column("#0", width=270, minwidth=270, stretch=tk.NO)
tree.column("one", width=150, minwidth=150, stretch=tk.NO)
tree.column("two", width=400, minwidth=200)
tree.column("three", width=80, minwidth=50, stretch=tk.NO)

Definition of the headings

tree.heading("#0",text="Name",anchor=tk.W)
tree.heading("one", text="Date modified",anchor=tk.W)
tree.heading("two", text="Type",anchor=tk.W)
tree.heading("three", text="Size",anchor=tk.W)

Insert some rows

# Level 1
folder1=tree.insert("", 1, "", text="Folder 1", values=("23-Jun-17 11:05","File folder",""))
tree.insert("", 2, "", text="text_file.txt", values=("23-Jun-17 11:25","TXT file","1 KB"))
# Level 2
tree.insert(folder1, "end", "", text="photo1.png", values=("23-Jun-17 11:28","PNG file","2.6 KB"))
tree.insert(folder1, "end", "", text="photo2.png", values=("23-Jun-17 11:29","PNG file","3.2 KB"))
tree.insert(folder1, "end", "", text="photo3.png", values=("23-Jun-17 11:30","PNG file","3.1 KB"))

Packing

tree.pack(side=tk.TOP,fill=tk.X)

On Windows, the following screenshot can be obtained from this example.