Vanta

A lightweight Python toolkit for clean, structured CLI output.

• Colored messages
• Timestamps & log levels
• Input & confirmations
• Exception handling
• Terminal utilities
• Automatic color detection
• Interactive / non-interactive mode
• Simple terminal tables
• Elapsed time measurement
• Timer pause and resume

Installation

pip install vanta

Quick Start

import vanta

console = vanta.Console()

console.info("Hello, World!")

table = vanta.Table("Name", "Age", "Status")
table.add_row("Alice", 17, "Online")
table.print()

Console

console = vanta.Console(
    color=None,        # Auto-detect colors
    cls=False,         # Don't clear the terminal on startup
    *,
    stdout=None,       # Output stream for normal messages
    stderr=None,       # Output stream for warnings/errors
    interactive=None,  # Auto-detect interactive mode
    level="info",      # Minimum log level
)

Options

Option	Description
color	Enable/disable colors
cls	Clear terminal on startup
stdout	Output stream for normal messages
stderr	Output stream for warnings/errors
interactive	Enable/disable input
level	Minimum log level

Log Levels

Vanta provides 7 log levels:

Level	Value	Stream	Purpose
debug	10	stdout	Detailed debugging information
info	20	stdout	General information
notice	25	stdout	Important information worth noting
success	30	stdout	Successful operation
warning	40	stderr	Something may be wrong
error	50	stderr	An operation failed
critical	60	stderr	Serious/critical failure

Lower levels are more verbose.

• level="info" suppresses debug messages
• level="warning" only emits warning, error, and critical

Examples

Logging

console.debug("Debug")
console.info("Info")
console.notice("Notice")
console.success("Success")
console.warning("Warning")
console.error("Error")
console.critical("Critical")

Set a minimum log level:

console = vanta.Console(level="warning")

For example, level="warning" only emits warning, error, and critical messages.

Input

name = console.ask("Name:")
age = console.ask("Age:", int)

if console.confirm("Continue?"):
    print("Continuing!")

ask() supports custom converters and retries.

Exceptions

try:
    1 / 0
except Exception as exc:
    console.exception(exc)

Use traceback=True for the full traceback.

Terminal

console.clear()

print(console.width)

Vanta works on Windows, Linux, and macOS.

Colors can also be controlled with NO_COLOR and FORCE_COLOR.

Methods

console.debug(...)
console.info(...)
console.notice(...)
console.success(...)
console.warning(...)
console.error(...)
console.critical(...)

console.raw(...)
console.ask(...)
console.confirm(...)
console.exception(...)
console.clear(...)

Tables

table = vanta.Table(
    "Name",        # Column 1
    "Age",         # Column 2
    "Status",      # Column 3
    ...,
    align="left",  # Align cell text to the left
    border=True,   # Show table and cell borders
    header=True,   # Include column headers
)

Options

Option	Description
align	Align cell text
border	Show table and cell borders
header	Include column headers

align can be left, center, or right.

Examples

table = vanta.Table("Name", "Age", "Status")

table.add_row("Alice", 17, "Online")
table.add_row("Bob", 21, "Offline")

table.print()

Output:

┌───────┬─────┬─────────┐
│ Name  │ Age │ Status  │
├───────┼─────┼─────────┤
│ Alice │ 17  │ Online  │
│ Bob   │ 21  │ Offline │
└───────┴─────┴─────────┘

Methods

table.add_row(...)
table.add_rows(...)
table.clear()
table.render()      # Returns the table as a string
table.print()       # Renders and prints the table

Progress

progress = vanta.Progress(
    100,
    label="Downloading",
    width=30,
    interactive=True,
)

Progress renders a single updating progress bar in the terminal.

Options

Option	Description
total	Total number of steps
label	Text displayed before the bar
width	Width of the progress bar
interactive	Enable/disable terminal rendering
file	Output stream for the progress bar

Examples

Basic

import time
import vanta

progress = vanta.Progress(100, label="Downloading")

while not progress.finished:
    time.sleep(0.02)
    progress.update()

Output:

Downloading [██████████████████████████████] 100.00% (100/100) 2.0s

The progress bar updates in place rather than printing a new line for every update.

Custom Updates

progress = vanta.Progress(100, label="Processing")

while not progress.finished:
    do_some_work()
    progress.update(5)

Progress is automatically capped at total.

Context Manager

with vanta.Progress(100, label="Downloading") as progress:
    while not progress.finished:
        do_some_work()
        progress.update()

Manual Finish

progress = vanta.Progress(100, label="Working")

progress.start()

# Do some work...

progress.finish()

Properties

Property	Description
total	Total number of steps
current	Current progress
percentage	Progress as a percentage
remaining	Number of remaining steps
finished	Whether the progress has finished
completed	Whether the total has been reached
running	Whether the progress is currently running
elapsed	Elapsed time in seconds

Methods

progress.start()
progress.update()
progress.update(5)
progress.finish()
progress.reset()

Timer

timer = vanta.Timer(
    autostart=False,  # Don't start the timer immediately
)

Options

Option	Description
autostart	Start the timer immediately

Examples

Basic

import time
import vanta

timer = vanta.Timer(autostart=True)

time.sleep(1.5)

timer.stop()

print(timer.elapsed)
print(timer.ms)

Pause

from time import sleep

from vanta import Timer


timer = Timer(autostart=True)

sleep(1.525)

timer.stop()  # Optional, but recommended

print(timer.elapsed)  # Around 1.525 sec
print(timer.ms)       # Around 1525 ms

Paused time is not included in the elapsed time.

Context Manager

with vanta.Timer() as timer:
    time.sleep(2)

print(timer.elapsed)

Properties

Property	Description
elapsed	Elapsed active time in seconds
ms	Elapsed active time in milliseconds
running	Whether the timer is running
paused	Whether the timer is paused
start_time	Time when the timer was started
stop_time	Time when the timer was stopped

Methods

timer.start()
timer.stop()
timer.pause()
timer.unpause()
timer.reset() # Clears the timer and returns it to its initial state. Does not restart.

Version

0.3.2

Vanta is currently in early development and the API may change before 1.0.0.

License

See LICENSE.