Real Time CLI UI with Python Rich

Rich's Live class renders dynamic content (tables, progress, spinners) that auto-refreshes without flicker. Combine Progress for task tracking + Table for live metrics. Live.update() triggers re-render at 60fps. Perfect for ETL jobs, downloads, system monitors. Zero curses complexity, works on Windows/Linux/Mac.

Code

from rich.live import Live
from rich.table import Table
from rich.progress import Progress, SpinnerColumn, TextColumn
import time

# Live updating dashboard
def create_table() -> Table:
    table = Table(title="System Monitor")
    table.add_column("CPU", style="cyan")
    table.add_column("Memory", style="magenta")
    table.add_column("Tasks", style="green")
    return table

with Live(create_table(), refresh_per_second=4) as live:
    progress = Progress(SpinnerColumn(), TextColumn("[progress.description]{task.description}"))
    task = progress.add_task("Processing...", total=1000)
    
    for i in range(1000):
        # Update table live
        table = create_table()
        table.add_row(f"{i*0.1:.0f}%", f"{i*2}MB", f"{i+10}")
        live.update(table)
        
        # Update progress
        progress.update(task, advance=1, description=f"Step {i+1}/1000")
        time.sleep(0.02)

print(" Complete!")

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How do you create real-time progress bars and updating tables for professional CLI tools using Python's Rich library?

Code

from rich.live import Live
from rich.table import Table
from rich.progress import Progress, SpinnerColumn, TextColumn
import time

# Live updating dashboard
def create_table() -> Table:
    table = Table(title="System Monitor")
    table.add_column("CPU", style="cyan")
    table.add_column("Memory", style="magenta")
    table.add_column("Tasks", style="green")
    return table

with Live(create_table(), refresh_per_second=4) as live:
    progress = Progress(SpinnerColumn(), TextColumn("[progress.description]{task.description}"))
    task = progress.add_task("Processing...", total=1000)
    
    for i in range(1000):
        # Update table live
        table = create_table()
        table.add_row(f"{i*0.1:.0f}%", f"{i*2}MB", f"{i+10}")
        live.update(table)
        
        # Update progress
        progress.update(task, advance=1, description=f"Step {i+1}/1000")
        time.sleep(0.02)

print(" Complete!")

How do you create real-time progress bars and updating tables for professional CLI tools using Python's Rich library?

Need Help with Python Development ?

Related Q&A

How do you safely handle SIGTERM in multi-threaded Python services?

How do you throttle database connections during traffic spikes to prevent pool exhaustion?

How do you compute the minimum number of insert, delete, or replace operations needed to convert one string into another (e.g., "horse" → "ros")?