我想用python做一个函数，每5秒运行一次，直到一个变量达到100%

Question

所以我想创建一个函数来打印重建的进度和完成重建所剩的时间。但一旦重建达到100%，就需要结束。到目前为止，我的情况是：

def progress():
    # This prints out the time left until rebuild is done.
    loudEchoCMD("storage::rebuild-eta")
    # This prints out the % of the rebuild that is done.
    rebuildProgress = loudEchoCMD("storage::rebuild-progress") 
    print rebuildProgress 
    if rebuildProgress != '100%':
        global t 
        t = threading.Timer(5.0, progress)
        t.start()
    else:
        t.cancel()

当我开始重建过程时，它将首先完成重建，然后开始线程，而不是让线程每隔五秒钟打印一次进度和ETA。你知道吗

Answer 1

When I start the rebuild process it will first finish that and then start the threading

在其他线程中启动重建过程。你知道吗

import threading
build = threading.Thread(target = start_rebuild)
build.start()
progress()
build.join()  # wait for build thread to end

另外，假设progress需要不到5秒的时间来完成，我认为省略global t和t.cancel就足够了：

def progress():
    # This prints out the time left until rebuild is done.
    loudEchoCMD("storage::rebuild-eta")
    # This prints out the % of the rebuild that is done.
    rebuildProgress = loudEchoCMD("storage::rebuild-progress") 
    print rebuildProgress 
    if rebuildProgress != '100%':
        t = threading.Timer(5.0, progress)
        t.start()