yaspin: Yet Another Terminal Spinner for Python

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Yaspin provides a full-featured terminal spinner to show the progress during long-hanging operations.

It is easy to integrate into existing codebase by using it as a context manager or as a function decorator:

import time
from yaspin import yaspin

# Context manager:
with yaspin():
    time.sleep(3)  # time consuming code

# Function decorator:
@yaspin(text="Loading...")
def some_operations():
    time.sleep(3)  # time consuming code

some_operations()

Yaspin also provides an intuitive and powerful API. For example, you can easily summon a shark:

import time
from yaspin import yaspin

with yaspin().white.bold.shark.on_blue as sp:
    sp.text = "White bold shark in a blue sea"
    time.sleep(5)

Features

• Runs at all major CPython versions (3.10, 3.11, 3.12, 3.13, 3.14), PyPy
• Supports all (70+) spinners from cli-spinners
• Supports all colors, highlights, attributes and their mixes from termcolor library
• Easy to combine with other command-line libraries, e.g. prompt-toolkit
• Flexible API, easy to integrate with existing code
• User-friendly API for handling POSIX signals
• Safe pipes and redirects:

$ python script_that_uses_yaspin.py > script.log
$ python script_that_uses_yaspin.py | grep ERROR

Table of Contents

• Installation
• Usage
  • Basic Example
  • Spinners from cli-spinners
  • Colors
  • Advanced colors usage
  • Building custom spinners
  • Changing spinner properties on the fly
  • Timer
  • Custom streams
  • Custom Ellipsis
  • Dynamic text
  • Writing messages
  • Integration with other libraries
  • Handling POSIX signals
  • Injecting spinner into a function
• Development
• Contributing
• License

Installation

From PyPI using pip package manager:

pip install --upgrade yaspin

Or install the latest sources from GitHub:

pip install https://github.com/pavdmyt/yaspin/archive/master.zip

Usage

Basic Example

import time
from random import randint
from yaspin import yaspin

with yaspin(text="Loading", color="yellow") as spinner:
    time.sleep(2)  # time consuming code

    success = randint(0, 1)
    if success:
        spinner.ok("✅ ")
    else:
        spinner.fail("💥 ")

It is also possible to control spinner manually:

import time
from yaspin import yaspin

spinner = yaspin()
spinner.start()

time.sleep(3)  # time consuming tasks

spinner.stop()

Run any spinner from cli-spinners

import time
from yaspin import yaspin
from yaspin.spinners import Spinners

with yaspin(Spinners.earth, text="Earth") as sp:
    time.sleep(2)                # time consuming code

    # change spinner
    sp.spinner = Spinners.moon
    sp.text = "Moon"

    time.sleep(2)                # time consuming code

Any Colour You Like 🌈

import time
from yaspin import yaspin

with yaspin(text="Colors!") as sp:
    # Support all basic termcolor text colors
    colors = ("red", "green", "yellow", "blue", "magenta", "cyan", "white")

    for color in colors:
        sp.color, sp.text = color, color
        time.sleep(1)

Advanced colors usage

import time
from yaspin import yaspin
from yaspin.spinners import Spinners

text = "Bold blink magenta spinner on cyan color"
with yaspin().bold.blink.magenta.bouncingBall.on_cyan as sp:
    sp.text = text
    time.sleep(3)

# The same result can be achieved by passing arguments directly
with yaspin(
    Spinners.bouncingBall,
    color="magenta",
    on_color="on_cyan",
    attrs=["bold", "blink"],
) as sp:
    sp.text = text
    time.sleep(3)

Run any spinner you want

import time
from yaspin import yaspin, Spinner

# Compose new spinners with custom frame sequence and interval value
sp = Spinner(["😸", "😹", "😺", "😻", "😼", "😽", "😾", "😿", "🙀"], 200)

with yaspin(sp, text="Cat!"):
    time.sleep(3)  # cat consuming code :)

Change spinner properties on the fly

import time
from yaspin import yaspin
from yaspin.spinners import Spinners

with yaspin(Spinners.noise, text="Noise spinner") as sp:
    time.sleep(2)

    sp.spinner = Spinners.arc  # spinner type
    sp.text = "Arc spinner"    # text along with spinner
    sp.color = "green"         # spinner color
    sp.side = "right"          # put spinner to the right
    sp.reversal = True         # reverse spin direction

    time.sleep(2)

Spinner with timer

import time
from yaspin import yaspin

with yaspin(text="elapsed time", timer=True) as sp:
    time.sleep(3.1415)
    sp.ok()

Custom streams

By default, yaspin outputs to sys.stdout. You can redirect spinner output to any stream using the stream parameter:

import sys
import time
from io import StringIO
from yaspin import yaspin

# Output to stderr instead of stdout
with yaspin(text="Processing...", stream=sys.stderr):
    time.sleep(2)

# Capture spinner output in a string
output_buffer = StringIO()
with yaspin(text="Buffered output", stream=output_buffer):
    time.sleep(1)

print("Captured:", output_buffer.getvalue())

For debugging stream lifecycle issues, enable warnings when operations are attempted on closed streams:

import time
from yaspin import yaspin

# Enable warnings for debugging (disabled by default)
with yaspin(text="Debug mode", warn_on_closed_stream=True):
    time.sleep(2)

This is particularly useful in testing environments or when integrating with libraries that manage stream lifecycles.

Custom Ellipsis

If the text does not fit in the terminal it gets truncated, you can set a custom ellipsis to signal truncation.

import time
from yaspin import yaspin

with yaspin(text="some long text", ellipsis="...") as sp:
     time.sleep(2)

Dynamic text

import time
from datetime import datetime
from yaspin import yaspin

class TimedText:
    def __init__(self, text):
        self.text = text
        self._start = datetime.now()

    def __str__(self):
        now = datetime.now()
        delta = now - self._start
        return f"{self.text} ({round(delta.total_seconds(), 1)}s)"

with yaspin(text=TimedText("time passed:")):
    time.sleep(3)

Writing messages

You should not write any message in the terminal using print while spinner is open. To write messages in the terminal without any collision with yaspin spinner, a .write() method is provided:

import time
from yaspin import yaspin

with yaspin(text="Downloading images", color="cyan") as sp:
    # task 1
    time.sleep(1)
    sp.write("> image 1 download complete")

    # task 2
    time.sleep(2)
    sp.write("> image 2 download complete")

    # finalize
    sp.ok("✔")

Integration with other libraries

Utilizing hidden context manager it is possible to toggle the display of the spinner in order to call custom methods that write to the terminal. This is helpful for allowing easy usage in other frameworks like prompt-toolkit. Using the powerful print_formatted_text function allows you even to apply HTML formats and CSS styles to