python-progressbar/examples.py at develop · gaoflow/python-progressbar · GitHub

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#!/usr/bin/python

from __future__ import annotations

import contextlib

import functools

import os

import random

import sys

import time

import typing

import progressbar

examples: list[typing.Callable[[typing.Any], typing.Any]] = []

def example(fn):

"""Wrap the examples so they generate readable output"""

@functools.wraps(fn)

def wrapped(*args, **kwargs):

try:

sys.stdout.write(f'Running: {fn.__name__}\n')

fn(*args, **kwargs)

sys.stdout.write('\n')

except KeyboardInterrupt:

sys.stdout.write('\nSkipping example.\n\n')

# Sleep a bit to make killing the script easier

time.sleep(0.2)

examples.append(wrapped)

return wrapped

@example

def fast_example() -> None:

"""Updates bar really quickly to cause flickering"""

with progressbar.ProgressBar(widgets=[progressbar.Bar()]) as bar:

for i in range(100):

bar.update(int(i / 10), force=True)

@example

def shortcut_example() -> None:

for _ in progressbar.progressbar(range(10)):

time.sleep(0.1)

@example

def prefixed_shortcut_example() -> None:

for _ in progressbar.progressbar(range(10), prefix='Hi: '):

time.sleep(0.1)

@example

def parallel_bars_multibar_example() -> None:

if os.name == 'nt':

print(

'Skipping multibar example on Windows due to threading '

'incompatibilities with the example code.'

)

return

BARS = 5

N = 50

def do_something(bar):

for _ in bar(range(N)):

# Sleep up to 0.1 seconds

time.sleep(random.random() * 0.1)

with progressbar.MultiBar() as multibar:

bar_labels = []

for i in range(BARS):

# Get a progressbar

bar_label = f'Bar #{i:d}'

bar_labels.append(bar_label)

assert multibar[bar_label] is not None

for _ in range(N * BARS):

time.sleep(0.005)

bar_i = random.randrange(0, BARS)

bar_label = bar_labels[bar_i]

# Increment one of the progress bars at random

multibar[bar_label].increment()

# The multibar context manager waits for all bars to finish on

# exit, so finish them explicitly

for bar_label in bar_labels:

multibar[bar_label].finish()

@example

def multiple_bars_line_offset_example() -> None:

BARS = 5

N = 100

bars = [

progressbar.ProgressBar(

max_value=N,

# We add 1 to the line offset to account for the `print_fd`

line_offset=i + 1,

max_error=False,

)

for i in range(BARS)

]

# Create a file descriptor for regular printing as well

print_fd = progressbar.LineOffsetStreamWrapper(lines=0, stream=sys.stdout)

assert print_fd

# The progress bar updates, normally you would do something useful here

for _ in range(N * BARS):

time.sleep(0.005)

# Increment one of the progress bars at random

bars[random.randrange(0, BARS)].increment()

# Cleanup the bars

for bar in bars:

bar.finish()

# Add a newline to make sure the next print starts on a new line

print()

@example

def templated_shortcut_example() -> None:

for _ in progressbar.progressbar(range(10), suffix='{seconds_elapsed:.1}'):

time.sleep(0.1)

@example

def job_status_example() -> None:

with progressbar.ProgressBar(

redirect_stdout=True,

widgets=[progressbar.widgets.JobStatusBar('status')],

) as bar:

for _ in range(30):

print('random', random.random())

# Roughly 1/3 probability for each status ;)

# Yes... probability is confusing at times

if random.random() > 0.66:

bar.increment(status=True)

elif random.random() > 0.5:

bar.increment(status=False)

else:

bar.increment(status=None)

time.sleep(0.1)

@example

def with_example_stdout_redirection() -> None:

with progressbar.ProgressBar(max_value=10, redirect_stdout=True) as p:

for i in range(10):

if i % 3 == 0:

print(f'Some print statement {i:d}')

# do something

p.update(i)

time.sleep(0.1)

@example

def basic_widget_example() -> None:

widgets = [progressbar.Percentage(), progressbar.Bar()]

bar = progressbar.ProgressBar(widgets=widgets, max_value=10).start()

for i in range(10):

# do something

time.sleep(0.1)

bar.update(i + 1)

bar.finish()

@example

def color_bar_example() -> None:

widgets = [

'\x1b[33mColorful example\x1b[39m',

progressbar.Percentage(),

progressbar.Bar(marker='\x1b[32m#\x1b[39m'),

]

bar = progressbar.ProgressBar(widgets=widgets, max_value=10).start()

for i in range(10):

# do something

time.sleep(0.1)

bar.update(i + 1)

bar.finish()

@example

def color_bar_animated_marker_example() -> None:

widgets = [

# Colored animated marker with colored fill:

progressbar.Bar(

marker=progressbar.AnimatedMarker(

fill='x',

# fill='█',

fill_wrap='\x1b[32m{}\x1b[39m',

marker_wrap='\x1b[31m{}\x1b[39m',

)

]

bar = progressbar.ProgressBar(widgets=widgets, max_value=10).start()

for i in range(10):

# do something

time.sleep(0.1)

bar.update(i + 1)

bar.finish()

@example

def multi_range_bar_example() -> None:

markers = [

'\x1b[32m█\x1b[39m', # Done

'\x1b[33m#\x1b[39m', # Processing

'\x1b[31m.\x1b[39m', # Scheduling

' ', # Not started

]

widgets = [progressbar.MultiRangeBar('amounts', markers=markers)]

amounts = [0] * (len(markers) - 1) + [25]

with progressbar.ProgressBar(widgets=widgets, max_value=10).start() as bar:

while True:

incomplete_items = [

idx

for idx, amount in enumerate(amounts)

for _ in range(amount)

if idx != 0

]

if not incomplete_items:

break

which = random.choice(incomplete_items)

amounts[which] -= 1

amounts[which - 1] += 1

bar.update(amounts=amounts, force=True)

time.sleep(0.02)

@example

def multi_progress_bar_example(left: bool = True) -> None:

jobs = [

# Each job takes between 1 and 10 steps to complete

[0, random.randint(1, 10)]

for _ in range(25) # 25 jobs total

]

widgets = [

progressbar.Percentage(),

' ',

progressbar.MultiProgressBar('jobs', fill_left=left),

]

max_value = sum([total for progress, total in jobs])

with progressbar.ProgressBar(widgets=widgets, max_value=max_value) as bar:

while True:

incomplete_jobs = [

idx

for idx, (progress, total) in enumerate(jobs)

if progress < total

]

if not incomplete_jobs:

break

which = random.choice(incomplete_jobs)

jobs[which][0] += 1

progress = sum([progress for progress, total in jobs])

bar.update(progress, jobs=jobs, force=True)

time.sleep(0.02)

@example

def granular_progress_example() -> None:

widgets = [

progressbar.GranularBar(markers=' ▏▎▍▌▋▊▉█', left='', right='|'),

progressbar.GranularBar(markers=' ▁▂▃▄▅▆▇█', left='', right='|'),

progressbar.GranularBar(markers=' ▖▌▛█', left='', right='|'),

progressbar.GranularBar(markers=' ░▒▓█', left='', right='|'),

progressbar.GranularBar(markers=' ⡀⡄⡆⡇⣇⣧⣷⣿', left='', right='|'),

progressbar.GranularBar(markers=' .oO', left='', right=''),

]

for _ in progressbar.progressbar(list(range(100)), widgets=widgets):

time.sleep(0.03)

for _ in progressbar.progressbar(iter(range(100)), widgets=widgets):

time.sleep(0.03)

@example

def percentage_label_bar_example() -> None:

widgets = [progressbar.PercentageLabelBar()]

bar = progressbar.ProgressBar(widgets=widgets, max_value=10).start()

for i in range(10):

# do something

time.sleep(0.1)

bar.update(i + 1)

bar.finish()

@example

def file_transfer_example() -> None:

widgets = [

'Test: ',

progressbar.Percentage(),

' ',

progressbar.Bar(marker=progressbar.RotatingMarker()),

' ',

progressbar.ETA(),

' ',

progressbar.FileTransferSpeed(),

]

bar = progressbar.ProgressBar(widgets=widgets, max_value=1000).start()

for i in range(100):

# do something

time.sleep(0.01)

bar.update(10 * i + 1)

bar.finish()

@example

def custom_file_transfer_example() -> None:

class CrazyFileTransferSpeed(progressbar.FileTransferSpeed):

"""

It's bigger between 45 and 80 percent

"""

def update(self, bar):

if 45 < bar.percentage() < 80:

return 'Bigger Now ' + progressbar.FileTransferSpeed.update(

self, bar

)

else:

return progressbar.FileTransferSpeed.update(self, bar)

widgets = [

CrazyFileTransferSpeed(),

' <<<',

progressbar.Bar(),

'>>> ',

progressbar.Percentage(),

' ',

progressbar.ETA(),

]

bar = progressbar.ProgressBar(widgets=widgets, max_value=1000)

# maybe do something

bar.start()

for i in range(200):

# do something

time.sleep(0.01)

bar.update(5 * i + 1)

bar.finish()

@example

def double_bar_example() -> None:

widgets = [

progressbar.Bar('>'),

' ',

progressbar.ETA(),

' ',

progressbar.ReverseBar('<'),

]

bar = progressbar.ProgressBar(widgets=widgets, max_value=1000).start()

for i in range(100):

# do something

time.sleep(0.01)

bar.update(10 * i + 1)

bar.finish()

@example

def basic_file_transfer() -> None:

widgets = [

'Test: ',

progressbar.Percentage(),

' ',

progressbar.Bar(marker='0', left='[', right=']'),

' ',

progressbar.ETA(),

' ',

progressbar.FileTransferSpeed(),

]

bar = progressbar.ProgressBar(widgets=widgets, max_value=500)

bar.start()

# Go beyond the max_value

for i in range(100, 501, 50):

time.sleep(0.1)

bar.update(i)

bar.finish()

@example

def simple_progress() -> None:

bar = progressbar.ProgressBar(

widgets=[progressbar.SimpleProgress()],

max_value=17,

).start()

for i in range(17):

time.sleep(0.1)

bar.update(i + 1)

bar.finish()

@example

def basic_progress() -> None:

bar = progressbar.ProgressBar().start()

for i in range(10):

time.sleep(0.1)

bar.update(i + 1)

bar.finish()

@example

def progress_with_automatic_max() -> None:

# Progressbar can guess max_value automatically.

bar = progressbar.ProgressBar()

for _ in bar(range(8)):

time.sleep(0.1)

@example

def progress_with_unavailable_max() -> None:

# Progressbar can't guess max_value.

bar = progressbar.ProgressBar(max_value=8)

for _ in bar(i for i in range(8)):

time.sleep(0.1)

@example

def animated_marker() -> None:

bar = progressbar.ProgressBar(

widgets=['Working: ', progressbar.AnimatedMarker()]

)

for _ in bar(i for i in range(5)):

time.sleep(0.1)

@example

def filling_bar_animated_marker() -> None:

bar = progressbar.ProgressBar(

widgets=[

progressbar.Bar(

marker=progressbar.AnimatedMarker(fill='#'),

]

)

for _ in bar(range(15)):

time.sleep(0.1)

@example

def counter_and_timer() -> None:

widgets = [

'Processed: ',

progressbar.Counter('Counter: %(value)05d'),

' lines (',

progressbar.Timer(),

')',

]

bar = progressbar.ProgressBar(widgets=widgets)

for _ in bar(i for i in range(15)):

time.sleep(0.1)

@example

def format_label() -> None:

widgets = [

progressbar.FormatLabel('Processed: %(value)d lines (in: %(elapsed)s)')

]

bar = progressbar.ProgressBar(widgets=widgets)

for _ in bar(i for i in range(15)):

time.sleep(0.1)

@example

def animated_balloons() -> None:

widgets = ['Balloon: ', progressbar.AnimatedMarker(markers='.oO@* ')]

bar = progressbar.ProgressBar(widgets=widgets)

for _ in bar(i for i in range(24)):

time.sleep(0.1)

@example

def animated_arrows() -> None:

# You may need python 3.x to see this correctly

try:

widgets = ['Arrows: ', progressbar.AnimatedMarker(markers='←↖↑↗→↘↓↙')]

bar = progressbar.ProgressBar(widgets=widgets)

for _ in bar(i for i in range(24)):

time.sleep(0.1)

except UnicodeError:

sys.stdout.write('Unicode error: skipping example')

@example

def animated_filled_arrows() -> None:

# You may need python 3.x to see this correctly

try:

widgets = ['Arrows: ', progressbar.AnimatedMarker(markers='◢◣◤◥')]

bar = progressbar.ProgressBar(widgets=widgets)

for _ in bar(i for i in range(24)):

time.sleep(0.1)

except UnicodeError:

sys.stdout.write('Unicode error: skipping example')

@example

def animated_wheels() -> None:

# You may need python 3.x to see this correctly

try:

widgets = ['Wheels: ', progressbar.AnimatedMarker(markers='◐◓◑◒')]

bar = progressbar.ProgressBar(widgets=widgets)

for _ in bar(i for i in range(24)):

time.sleep(0.1)

except UnicodeError:

sys.stdout.write('Unicode error: skipping example')

@example

def format_label_bouncer() -> None:

widgets = [

progressbar.FormatLabel('Bouncer: value %(value)d - '),

progressbar.BouncingBar(),

]

bar = progressbar.ProgressBar(widgets=widgets)

for _ in bar(i for i in range(100)):

time.sleep(0.01)

@example

def format_label_rotating_bouncer() -> None:

widgets = [

progressbar.FormatLabel('Animated Bouncer: value %(value)d - '),

progressbar.BouncingBar(marker=progressbar.RotatingMarker()),

]

bar = progressbar.ProgressBar(widgets=widgets)

for _ in bar(i for i in range(18)):

time.sleep(0.1)

@example

def with_right_justify() -> None:

with progressbar.ProgressBar(

max_value=10, term_width=20, left_justify=False

) as progress:

assert progress.term_width is not None

for i in range(10):

progress.update(i)

@example

def exceeding_maximum() -> None:

with (

progressbar.ProgressBar(max_value=1) as progress,

contextlib.suppress(ValueError),

progress.update(2)

@example

def reaching_maximum() -> None:

progress = progressbar.ProgressBar(max_value=1)

with contextlib.suppress(RuntimeError):

progress.update(1)

@example

def stdout_redirection() -> None:

with progressbar.ProgressBar(redirect_stdout=True) as progress:

print('', file=sys.stdout)

progress.update(0)

@example

def stderr_redirection() -> None:

with progressbar.ProgressBar(redirect_stderr=True) as progress:

print('', file=sys.stderr)

progress.update(0)

@example

def rotating_bouncing_marker() -> None:

widgets = [progressbar.BouncingBar(marker=progressbar.RotatingMarker())]

with progressbar.ProgressBar(

widgets=widgets, max_value=20, term_width=10

) as progress:

for i in range(20):

time.sleep(0.1)

progress.update(i)

widgets = [

progressbar.BouncingBar(

marker=progressbar.RotatingMarker(), fill_left=False

)

]

with progressbar.ProgressBar(

widgets=widgets, max_value=20, term_width=10

) as progress:

for i in range(20):

time.sleep(0.1)

progress.update(i)

@example

def incrementing_bar() -> None:

bar = progressbar.ProgressBar(

widgets=[

progressbar.Percentage(),

progressbar.Bar(),

max_value=10,

).start()

for _ in range(10):

# do something

time.sleep(0.1)

bar += 1

bar.finish()

@example

def increment_bar_with_output_redirection() -> None:

widgets = [

'Test: ',

progressbar.Percentage(),

' ',

progressbar.Bar(marker=progressbar.RotatingMarker()),

' ',

progressbar.ETA(),

' ',

progressbar.FileTransferSpeed(),

]

bar = progressbar.ProgressBar(

widgets=widgets, max_value=100, redirect_stdout=True

).start()

for i in range(10):

# do something

time.sleep(0.01)

bar += 10

print('Got', i)

bar.finish()

@example

def eta_types_demonstration() -> None:

widgets = [

progressbar.Percentage(),

' ETA: ',

progressbar.ETA(),

' Adaptive : ',

progressbar.AdaptiveETA(),

' Smoothing(a=0.1): ',

progressbar.SmoothingETA(smoothing_parameters=dict(alpha=0.1)),

' Smoothing(a=0.9): ',

progressbar.SmoothingETA(smoothing_parameters=dict(alpha=0.9)),

' Absolute: ',

progressbar.AbsoluteETA(),

' Transfer: ',

progressbar.FileTransferSpeed(),

' Adaptive T: ',

progressbar.AdaptiveTransferSpeed(),

' ',

progressbar.Bar(),

]

bar = progressbar.ProgressBar(widgets=widgets, max_value=500)

bar.start()

for i in range(500):

if i < 100:

time.sleep(0.02)

elif i > 400:

time.sleep(0.1)

else:

time.sleep(0.01)

bar.update(i + 1)

bar.finish()

@example

def adaptive_eta_without_value_change() -> None:

# Testing progressbar.AdaptiveETA when the value doesn't actually change

bar = progressbar.ProgressBar(

widgets=[

progressbar.AdaptiveETA(),

progressbar.AdaptiveTransferSpeed(),

max_value=2,

poll_interval=0.0001,

)

bar.start()

for _ in range(100):

bar.update(1)

time.sleep(0.1)

bar.finish()

@example

def iterator_with_max_value() -> None:

# Testing using progressbar as an iterator with a max value

bar = progressbar.ProgressBar()

for _ in bar(iter(range(100)), 100):

# iter range is a way to get an iterator in both python 2 and 3

time.sleep(0.01)

@example

def eta() -> None:

widgets = [

'Test: ',

progressbar.Percentage(),

' | ETA: ',

progressbar.ETA(),

' | AbsoluteETA: ',

progressbar.AbsoluteETA(),

' | AdaptiveETA: ',

progressbar.AdaptiveETA(),

]

bar = progressbar.ProgressBar(widgets=widgets, max_value=50).start()

for i in range(50):

time.sleep(0.1)

bar.update(i + 1)

bar.finish()

@example

def variables() -> None:

# Use progressbar.Variable to keep track of some parameter(s) during

# your calculations

widgets = [

progressbar.Percentage(),

progressbar.Bar(),

progressbar.Variable('loss'),

', ',

progressbar.Variable('username', width=12, precision=12),

]

with progressbar.ProgressBar(max_value=100, widgets=widgets) as bar:

min_so_far = 1

for i in range(100):

time.sleep(0.01)

val = random.random()

if val < min_so_far:

min_so_far = val

bar.update(i, loss=min_so_far, username='Some user')

@example

def user_variables() -> None:

tasks = {

'Download': [

'SDK',

'IDE',

'Dependencies',

'Build': [

'Compile',

'Link',

'Test': [

'Unit tests',

'Integration tests',

'Regression tests',

'Deploy': [

'Send to server',

'Restart server',

}

num_subtasks = sum(len(x) for x in tasks.values())

with progressbar.ProgressBar(

prefix='{variables.task} >> {variables.subtask}',

variables={'task': '--', 'subtask': '--'},

max_value=10 * num_subtasks,

) as bar:

for tasks_name, subtasks in tasks.items():

for subtask_name in subtasks:

for _ in range(10):

bar.update(

bar.value + 1, task=tasks_name, subtask=subtask_name

)

time.sleep(0.1)

@example

def format_custom_text() -> None:

format_custom_text = progressbar.FormatCustomText(

'Spam: %(spam).1f kg, eggs: %(eggs)d',

dict(

spam=0.25,

eggs=3,

)

bar = progressbar.ProgressBar(

widgets=[

format_custom_text,

' :: ',

progressbar.Percentage(),

]

)

for i in bar(range(25)):

format_custom_text.update_mapping(eggs=i * 2)

time.sleep(0.1)

@example

def simple_api_example() -> None:

bar = progressbar.ProgressBar(widget_kwargs=dict(fill='█'))

for _ in bar(range(200)):

time.sleep(0.02)

@example

def eta_on_generators():

def gen():

for _ in range(200):

yield None

widgets = [

progressbar.AdaptiveETA(),

' ',

progressbar.ETA(),

' ',

progressbar.Timer(),

]

bar = progressbar.ProgressBar(widgets=widgets)

for _ in bar(gen()):

time.sleep(0.02)

@example

def percentage_on_generators():

def gen():

for _ in range(200):

yield None

widgets = [

progressbar.Counter(),

' ',

progressbar.Percentage(),

' ',

progressbar.SimpleProgress(),

' ',

]

bar = progressbar.ProgressBar(widgets=widgets)

for _ in bar(gen()):

time.sleep(0.02)

def test(*tests) -> None:

if tests:

no_tests = True

for example in examples:

for test in tests:

if test in example.__name__:

example()

no_tests = False

break

if no_tests:

for example in examples:

print('Skipping', example.__name__)

else:

for example in examples:

example()

if __name__ == '__main__':

try:

test(*sys.argv[1:])

except KeyboardInterrupt:

sys.stdout.write('\nQuitting examples.\n')

python-progressbar/examples.py at develop · gaoflow/python-progressbar · GitHub

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