progress1bar 0.2.4

A simple ANSI-based progress bar

progress1bar

A simple ANSI-based progress bar.

Installation

pip install progress1bar

ProgressBar

ProgressBar(total=None, fill=None, regex=None, completed_message=None, clear_alias=False, show_prefix=True, show_fraction=True, show_percentage=True, ticker=None)

Documentation

total - An integer for the total number of items the progress bar will show that need to be completed.

fill - A dictionary whose key values are integers that dictate the number of leading zeros the progress bar should add to the total and completed values; this is optional and should be used to format the progress bar appearance. The supported key values are max_total and max_completed.

regex - A dictionary whose key values are regular expressions for total, count and alias. The regular expressions will be checked against the log messages intercepted from the executing function, if matched the value will be used to assign the attribute for the respective progress bar. The total and count key values are required, the alias key value is optional.

completed_message - A string to designate the message the progress bar should display when complete. Default is 'Processing complete'

clear_alias - A boolean to designate if the progress bar should clear the alias when complete.

show_prefix - A boolean to designate if the prefix of Processing should be printed prefixing the progress bar.

show_fraction - A boolean to designate if the fraction should be printed with the progress bar.

show_percentage - A boolean to designate if the percentage should be printed with the progress bar.

ticker - A integer representing unicode character to print as the progress bar ticker. Refer to unicode chart for values. Default is 9632 (black square ■).

Attributes

count - An integer attribute to increment that designates the current count. When count reaches total the progress bar will show complete.

alias - A string attribute to set the alias of the progress bar.

Functions

reset()

Reset the progress bar so that it can be used again. It will maintain and show the number of times the progress bar has been used.

Examples

Various examples are included to demonstrate the progress1bar package. To run the examples, build the Docker image and run the Docker container using the instructions described in the Development section.

example1

The ProgressBar class is used to display function execution as a progress bar. Use it as a context manager, and simply set the .total and .count attributes accordingly. Here is an example:

Code

import time
from progress1bar import ProgressBar

with ProgressBar(total=250, show_prefix=False, show_fraction=True) as pb:
    for _ in range(pb.total):
        pb.count += 1
        # simulate work
        time.sleep(.01)

example2

Configure ProgressBar to display the item that is currently being processd by setting the alias attribute, specify fill dictionary parameter to ensure the progress bar digits are displayed uniformly:

Code

import time
import names
from progress1bar import ProgressBar

print('Processing names...')
completed_message = 'Processed names'
with ProgressBar(total=75, completed_message=completed_message, clear_alias=True, show_fraction=False, show_prefix=False) as pb:
    for _ in range(pb.total):
        pb.alias = names.get_full_name()
        # simulate work
        time.sleep(.08)
        pb.count += 1

example3

Configure ProgressBar with a non-default ticker, and use regular expressions to determine the total, count and alias attributes:

Code

import random
import names
from progress1bar import ProgressBar

regex = {
    'total': r'^processing total of (?P<value>\d+)$',
    'count': r'^processed .*$',
    'alias': r'^processor is (?P<value>.*)$'
}
with ProgressBar(ticker=9473, regex=regex) as pb:
    pb.match(f'processor is {names.get_full_name()}')
    total = random.randint(500, 1000)
    pb.match(f'processing total of {total}')
    for _ in range(total):
        pb.match(f'processed {names.get_full_name()}')

example4

Configure ProgressBar to show and reuse progress for several iterations:

Code

import random
import time
import names
from progress1bar import ProgressBar

TOTAL_ITEMS = 800
ITERATIONS = 4

print(f'Execute {ITERATIONS} iterations of varying totals:')
with ProgressBar(show_prefix=False, show_fraction=False) as pb:
    iterations = 0
    while True:
        if iterations == ITERATIONS:
            pb.alias = ''
            pb.complete = True
            break
        pb.alias = names.get_full_name()
        pb.total = random.randint(500, TOTAL_ITEMS)
        for _ in range(pb.total):
            names.get_full_name()
            pb.count += 1
        iterations += 1
        pb.reset()
        time.sleep(.4)

Development

Clone the repository and ensure the latest version of Docker is installed on your development server.

Build the Docker image:

docker image build \
-t \
progress1bar:latest .

Run the Docker container:

docker container run \
--rm \
-it \
-v $PWD:/code \
progress1bar:latest \
bash

Execute the build:

pyb -X