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

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#!/usr/bin/python

# -*- coding: utf-8 -*-

from __future__ import print_function

import functools

import random

import sys

import time

import progressbar

examples = []

non_interactive_sleep_factor = 100

def sleep(delay):

'''Make non-interactive examples faster by a factor'''

if __name__ != '__main__':

delay /= non_interactive_sleep_factor

time.sleep(delay)

def example(fn):

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

@functools.wraps(fn)

def wrapped():

try:

sys.stdout.write('Running: %s\n' % fn.__name__)

fn()

sys.stdout.write('\n')

except KeyboardInterrupt:

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

# Sleep a bit to make killing the script easier

sleep(0.2)

examples.append(wrapped)

return wrapped

@example

def with_example_without_stdout_redirection():

with progressbar.ProgressBar(max_value=10) as progress:

for i in range(10):

if i % 3 == 0:

print('Some print statement %i' % i)

# do something

sleep(0.1)

progress.update(i)

@example

def with_example_stdout_redirection():

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

for i in range(10):

if i % 3 == 0:

print('Some print statement %i' % i)

# do something

p.update(i)

sleep(0.1)

@example

def basic_widget_example():

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

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

for i in range(10):

# do something

sleep(0.1)

bar.update(i + 1)

bar.finish()

@example

def file_transfer_example():

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

bar.update(10 * i + 1)

bar.finish()

@example

def custom_file_transfer_example():

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

bar.update(5 * i + 1)

bar.finish()

@example

def double_bar_example():

widgets = [

progressbar.Bar('>'), ' ',

progressbar.ETA(), ' ',

progressbar.ReverseBar('<'),

]

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

for i in range(100):

# do something

bar.update(10 * i + 1)

sleep(0.01)

bar.finish()

@example

def basic_file_transfer():

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):

sleep(0.1)

bar.update(i)

bar.finish()

@example

def simple_progress():

bar = progressbar.ProgressBar(

widgets=[progressbar.SimpleProgress()],

max_value=17,

).start()

for i in range(17):

sleep(0.1)

bar.update(i + 1)

bar.finish()

@example

def basic_progress():

bar = progressbar.ProgressBar().start()

for i in range(10):

sleep(0.1)

bar.update(i + 1)

bar.finish()

@example

def progress_with_automatic_max():

# Progressbar can guess max_value automatically.

bar = progressbar.ProgressBar()

for i in bar(range(8)):

sleep(0.1)

@example

def progress_with_unavailable_max():

# Progressbar can't guess max_value.

bar = progressbar.ProgressBar(max_value=8)

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

sleep(0.1)

@example

def animated_marker():

bar = progressbar.ProgressBar(

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

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

sleep(0.1)

@example

def counter_and_timer():

widgets = ['Processed: ', progressbar.Counter(),

' lines (', progressbar.Timer(), ')']

bar = progressbar.ProgressBar(widgets=widgets)

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

sleep(0.1)

@example

def format_label():

widgets = [progressbar.FormatLabel(

'Processed: %(value)d lines (in: %(elapsed)s)')]

bar = progressbar.ProgressBar(widgets=widgets)

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

sleep(0.1)

@example

def animated_balloons():

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

bar = progressbar.ProgressBar(widgets=widgets)

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

sleep(0.1)

@example

def animated_arrows():

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

try:

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

bar = progressbar.ProgressBar(widgets=widgets)

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

sleep(0.1)

except UnicodeError:

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

@example

def animated_filled_arrows():

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

try:

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

bar = progressbar.ProgressBar(widgets=widgets)

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

sleep(0.1)

except UnicodeError:

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

@example

def animated_wheels():

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

try:

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

bar = progressbar.ProgressBar(widgets=widgets)

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

sleep(0.1)

except UnicodeError:

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

@example

def format_label_bouncer():

widgets = [

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

progressbar.BouncingBar(),

]

bar = progressbar.ProgressBar(widgets=widgets)

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

sleep(0.01)

@example

def format_label_rotating_bouncer():

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

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

bar = progressbar.ProgressBar(widgets=widgets)

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

sleep(0.1)

@example

def with_right_justify():

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():

with progressbar.ProgressBar(max_value=1) as progress:

try:

progress.update(2)

except ValueError:

pass

@example

def reaching_maximum():

progress = progressbar.ProgressBar(max_value=1)

try:

progress.update(1)

except RuntimeError:

pass

@example

def stdout_redirection():

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

print('', file=sys.stdout)

progress.update(0)

@example

def stderr_redirection():

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

print('', file=sys.stderr)

progress.update(0)

@example

def negative_maximum():

try:

with progressbar.ProgressBar(max_value=-1) as progress:

progress.start()

except ValueError:

pass

@example

def rotating_bouncing_marker():

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

with progressbar.ProgressBar(widgets=widgets, max_value=20,

term_width=10) as progress:

for i in range(20):

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):

sleep(0.1)

progress.update(i)

@example

def incrementing_bar():

bar = progressbar.ProgressBar(widgets=[

progressbar.Percentage(),

progressbar.Bar(),

], max_value=10).start()

for i in range(10):

# do something

sleep(0.1)

bar += 1

bar.finish()

@example

def increment_bar_with_output_redirection():

widgets = [

'Test: ', progressbar.Percentage(),

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

' ', progressbar.ETA(),

' ', progressbar.FileTransferSpeed(),

]

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

redirect_stdout=True).start()

for i in range(100):

# do something

sleep(0.01)

bar += 10

print('Got', i)

bar.finish()

@example

def eta_types_demonstration():

widgets = [

progressbar.Percentage(),

' ETA: ', progressbar.ETA(),

' Adaptive ETA: ', progressbar.AdaptiveETA(),

' Absolute ETA: ', progressbar.AbsoluteETA(),

' Adaptive Transfer Speed: ', progressbar.AdaptiveTransferSpeed(),

' ', progressbar.Bar(),

]

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

bar.start()

for i in range(500):

if i < 100:

sleep(0.02)

elif i > 400:

sleep(0.1)

else:

sleep(0.01)

bar.update(i + 1)

bar.finish()

@example

def adaptive_eta_without_value_change():

# 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 i in range(100):

bar.update(1)

sleep(0.1)

bar.finish()

@example

def iterator_with_max_value():

# Testing using progressbar as an iterator with a max value

bar = progressbar.ProgressBar()

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

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

pass

@example

def eta():

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):

sleep(0.1)

bar.update(i + 1)

bar.finish()

@example

def dynamic_message():

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

# your calculations

widgets = [

progressbar.Percentage(),

progressbar.Bar(),

progressbar.DynamicMessage('loss'),

]

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

min_so_far = 1

for i in range(100):

val = random.random()

if val < min_so_far:

min_so_far = val

bar.update(i, loss=min_so_far)

@example

def format_custom_text():

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)

sleep(0.1)

@example

def simple_api_example():

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

for i in bar(range(200)):

sleep(0.02)

@example

def ETA_on_generators():

def gen():

for x in range(200):

yield None

widgets = [progressbar.AdaptiveETA(), ' ',

progressbar.ETA(), ' ',

progressbar.Timer()]

bar = progressbar.ProgressBar(widgets=widgets)

for i in bar(gen()):

sleep(0.02)

@example

def percentage_on_generators():

def gen():

for x in range(200):

yield None

widgets = [progressbar.Counter(), ' ',

progressbar.Percentage(), ' ',

progressbar.SimpleProgress(), ' ']

bar = progressbar.ProgressBar(widgets=widgets)

for i in bar(gen()):

sleep(0.02)

def test(*tests):

for example in examples:

if not tests or example.__name__ in tests:

example()

else:

print('Skipping', example.__name__)

if __name__ == '__main__':

try:

test(*sys.argv[1:])

except KeyboardInterrupt:

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

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

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