console progressbars

[MvGulik]

A little simple pure text based progress bar.

In my case the output pane will not do a true carriage return(\r), but will do an additional line feed (\r => \r\n).
(The picked Pbar characters are related to the proportional font my output pane is using)

+(Updated to second version. Behaving overall as intended.)
+(Updated to third version. Behaving finally as intended. +(minor bug fix).)
(Might not truly classify as simple anymore. Well, code wise I guess. ... Was fun little personal project.)

class Pbar():

	def __init__(self, loops, title='', barlen=80, chr1='~', chr2='#'):

		if isinstance(loops, int): pass
		elif isinstance(loops, float): loops = int(loops)
		else: loops = len(loops)

		if not isinstance(barlen, int):
			barlen = int(barlen)

		self._loops = loops if loops > 1 else 1
		self._title = str(title) if str(title) else ''
		self._barlen = barlen if barlen > 11 else 11
		## True minimale bar length is "ciel(set-value/2)". Or 6 when set to 11 or 12 for example.

		if self._loops < self._barlen:
			self._step = self._barlen//self._loops
			self._barlen = self._loops * self._step
		else:
			self._step = 1

		self._loops -= 0

		if self._title:
			self._title = '[ ' + self._title + ' ]'

		self._chr1 = chr1[:1]
		self._chr2 = chr2[:1]

		self._count = 0
		self._progress = 0
		self._done = False

		self._pre_bar()


	def _pre_bar(self):

		if self._title:
			## General title centering for proportional fonts.
			## For monospaced fonts "offset*1" should do the trick.
			offset = self._barlen//2 - len(self._title)//2
			print(''.rjust(offset*3, ' '), self._title)

		print(''.rjust(self._barlen, self._chr1))


	def loop(self):

		if self._done: return

		self._count += 1

		new_progress = int(round(self._count / self._loops * self._barlen))

		if new_progress > self._progress:
			self._progress = new_progress
			print(''.rjust(self._step, self._chr2), end='')


	def done(self):

		self._done = True

		print()
		print()



def pbar_example_run():

	import time
	import random

	for x in range(6):

		barlen = int(random.random() * 15) * x
		loop = int(random.random() * 23) * x + 1

		title = 'Test run: Loop ' + str(loop) + ' over Bar ' + str(barlen) + '.'
		_time = 1/loop if loop > 0 else 1

		pbar = Pbar(loop, title=title , barlen=barlen)
		for i in range(loop):
			time.sleep(_time)
			pbar.loop()
		pbar.done()



if (__name__ == "__main__"):
    pbar_example_run()

Output:
 [ Test run: Loop 111 over Bar 6. ]
~~~~~~~~~~~
###########
                                                                                                                [ Test run: Loop 6 over Bar 111. ]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
############################################################################################################

(Python 3.8.5)