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| #encoding: utf-8
from threading import Lock
import random
import math
import time
import sys
class ProgressBar(object):
def __init__(self, total, length=40, min_update_interval=0.1):
self.total = total
self.length = length
self.current = 0
self.lock = Lock()
self.start_time = time.time()
self.min_update_interval = min_update_interval
self.last_update_time = 0
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
pass
def update(self, advance=1):
with self.lock:
self.current += advance
current_time = time.time()
if current_time - self.last_update_time >= self.min_update_interval:
self._render()
self.last_update_time = current_time
if self.current == self.total:
self._render()
sys.stdout.write("\n")
sys.stdout.flush()
def _render(self):
elapsed_time = time.time() - self.start_time
progress = self.current / float(self.total)
block = int(round(self.length * progress))
progress_percent = round(progress * 100, 2)
color_code = "\033[91m"
if block >= self.length:
block = self.length
bar = "━" * block
color_code = "\033[92m"
else:
bar = "━" * block + "-" * (self.length - block)
speed = self.current / elapsed_time if elapsed_time > 0 else 0
remaining_time = (self.total - self.current) / speed if speed > 0 else 0
total_time = time.time() - self.start_time
show_extend = [
"{:.2f} items/s".format(speed),
"ETA: {:.2f}s".format(remaining_time),
"Total time: {:.2f}s".format(total_time),
]
out_template = "\r{{0:4.2f}}% [{0}{{1}}\033[0m] {{2:>{1}}}/{{3:<{1}}} {{4}}".format(color_code, len(repr(self.total)))
output = out_template.format(
progress_percent, bar, self.current, self.total, " - ".join(show_extend))
# Ensure the length of the output is consistent to avoid flickering
sys.stdout.write(output)
sys.stdout.flush()
def test_case1():
page = int(math.ceil(9030000/10000))
read_progres = ProgressBar(page)
for n in range(0, page):
read_progres.update(1)
def test_case2():
with ProgressBar(100000000, length=50) as progress:
for n in range(0, 100000000, 1):
progress.update(1)
if __name__ == "__main__":
test_case1()
test_case2()
|
