如何估算代码完成运行之前的剩余时间？

Question

我这里有一些测试代码：

# Print iterations progress
from random import randint, uniform
from time import sleep, time
import os

mem_bytes = os.sysconf('SC_PAGE_SIZE') * os.sysconf('SC_PHYS_PAGES')
mem_gib = mem_bytes/(1024.**3)

howManyToCompile = randint(100, 1000000)


def printProgress(current, total, remaining, decimals="2", prefix="Compiling shaders", suffix="Complete", printEnd="\r"):
    percent = ("{0:." + str(decimals) + "f}").format(100 * (current / float(total)))
    print(f'\r{prefix}: {current} / {total} {str.lower(suffix)} ({percent}% - {remaining}s left) ', end = printEnd)
    if current == total: 
        print()

printProgress(0, howManyToCompile, (0))
for i in range(howManyToCompile):
    t1 = time()

    sleep(uniform(0.05, 0.1 * mem_gib))

    t2 = time()
    printProgress(i + 1, howManyToCompile, (t2-t1))

但是当我运行它时，我得到这样的东西：

Compiling shaders: 47 / [random amount] complete (0.01% - 0.15282988548278809s left)

但问题是它获取的是直到那个“着色器”完成“编译”的时间，而不是循环本身结束之前剩余的平均时间。

如何让它估计循环结束前的剩余时间？

Answer 1

tqdm 是一个 python 实用程序，用作进度指示器。用法非常简单：

from tqdm import tqdm
for i in tqdm(range(10000)):
    ...

可以在 documentation.

中查看更多信息和高级用法

Answer 2

如果您想同时将调试输出写入屏幕或想要多种颜色，我会看一下 Enlighten. Lots of options for customization and examples in the docs。

import enlighten

manager = enlighten.get_manager()
pbar = manager.counter(total=howManyToCompile, color='red')

for i in pbar(range(howManyToCompile)):
    sleep(0.01)
    print(i)

tqdm 可以处理打印，但它需要额外的步骤并且很容易过载。

如何估算代码完成 运行 之前的剩余时间？

How can I get an estimate of the time remaining until the code has finished running?

python

time

如何估算代码完成运行之前的剩余时间？