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| #encoding: utf-8
import sys
import time
from threading import Thread, Lock
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):
self.finish()
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
def _render(self):
elapsed_time = time.time() - self.start_time
progress = self.current / self.total
block = int(round(self.length * progress))
progress_percent = round(progress * 100, 2)
if block > self.length:
block = self.length
bar = "▓" * block
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
sys.stdout.write("\r{0}% [{1}] {2}/{3} - {4:.2f} items/s - ETA: {5:.2f}s - Total time: {6:.2f}s".format(
progress_percent, bar, self.current, self.total, speed, remaining_time, total_time))
sys.stdout.flush()
def finish(self):
with self.lock:
self._render()
print("\n")
# 使用示例
if __name__ == "__main__":
with ProgressBar(100000000, length=50) as progress:
for n in range(0, 100000000, 1):
progress.update(1)
# time.sleep(1)
|
