How to align text to the right in ttk Treeview widget?

The Treeview widget displays data in a hierarchical table structure with rows and columns. By default, text in Treeview columns is left-aligned, but you can control alignment using the anchor property.

To align text to the right in a ttk Treeview widget, use the anchor parameter with the value "E" (East) when configuring columns. This property controls the position of text within each column cell.

Syntax

tree.column("column_id", anchor="E")

Anchor Values

The anchor parameter accepts the following values ?

Example

Here's how to create a Treeview with right-aligned text ?

# Import the required libraries
from tkinter import *
from tkinter import ttk

# Create an instance of tkinter frame
win = Tk()

# Set the size of the tkinter window
win.geometry("700x350")
win.title("Right-Aligned Treeview Example")

# Create an instance of Style widget
style = ttk.Style()
style.theme_use('clam')

# Add a Treeview widget
tree = ttk.Treeview(win, columns=("c1", "c2"), show='headings', height=8)

# Configure columns with right alignment (anchor="E")
tree.column("# 1", anchor="E", stretch=NO, width=100)
tree.heading("# 1", text="Index")

tree.column("# 2", anchor="E", stretch=NO, width=200)
tree.heading("# 2", text="Programming Language")

# Insert the data in Treeview widget
tree.insert('', 'end', values=('1', 'C++'))
tree.insert('', 'end', values=('2', 'Java'))
tree.insert('', 'end', values=('3', 'Python'))
tree.insert('', 'end', values=('4', 'Golang'))
tree.insert('', 'end', values=('5', 'JavaScript'))
tree.insert('', 'end', values=('6', 'C#'))
tree.insert('', 'end', values=('7', 'Rust'))
tree.insert('', 'end', values=('8', 'SQL'))

tree.pack(pady=20)

win.mainloop()

Output

The above code creates a Treeview widget where all text in both columns is aligned to the right ?

Mixed Alignment Example

You can also use different alignments for different columns ?

from tkinter import *
from tkinter import ttk

win = Tk()
win.geometry("600x300")

tree = ttk.Treeview(win, columns=("c1", "c2", "c3"), show='headings', height=6)

# Different alignments for each column
tree.column("# 1", anchor="W", width=80)     # Left aligned
tree.heading("# 1", text="ID")

tree.column("# 2", anchor="CENTER", width=150)  # Center aligned
tree.heading("# 2", text="Name")

tree.column("# 3", anchor="E", width=100)    # Right aligned
tree.heading("# 3", text="Score")

# Insert sample data
tree.insert('', 'end', values=('001', 'Alice', '95'))
tree.insert('', 'end', values=('002', 'Bob', '87'))
tree.insert('', 'end', values=('003', 'Charlie', '92'))

tree.pack(pady=20)
win.mainloop()

Key Points

• Use anchor="E" in the column()
• Apply alignment when configuring columns, not when inserting data
• Different columns can have different alignments in the same Treeview
• The alignment affects both data and header text positioning

Conclusion

To align text to the right in a ttk Treeview widget, use anchor="E" when configuring columns. This provides better visual organization for numerical data or when you need specific text positioning in your table display.