如何让我的 Python 程序休眠
50
毫秒?
请注意,如果您依赖睡眠时间恰好 50 毫秒,您将无法得到这一结果。这只是关于它。
使用
time.sleep()
:
import time
time.sleep(50 / 1000)
请参阅 Python 文档:https://docs.python.org/library/time.html#time.sleep
有一个名为“时间”的模块可以帮助您。我知道两种方法:
sleep
Sleep(reference)要求程序等待,然后执行其余的代码。
有两种使用睡眠的方法:
import time # Import whole time module
print("0.00 seconds")
time.sleep(0.05) # 50 milliseconds... make sure you put time. if you import time!
print("0.05 seconds")
第二种方式不导入整个模块,只是休眠。
from time import sleep # Just the sleep function from module time
print("0.00 sec")
sleep(0.05) # Don't put time. this time, as it will be confused. You did
# not import the whole module
print("0.05 sec")
使用
time.monotonic()
启动后的使用时间。
如果您需要运行循环,这种方法很有用。但这一个稍微复杂一些。
time.monotonic
比 time.time
更好,因为它不考虑闰秒,但它会计算启动时的设置数量。 (来源:马克·拉卡塔)
time_not_passed = True
from time import monotonic as time # Importing time.monotonic but naming it 'time' for the sake of simplicity
init_time = time() # Or time.monotonic() if whole module imported
print("0.00 secs")
while True: # Init loop
if init_time + 0.05 <= time() and time_not_passed: # Time not passed variable is important as we want this to run once. !!! time.monotonic() if whole module imported :O
print("0.05 secs")
time_not_passed = False
您也可以使用
Timer()
功能来完成。
代码:
from threading import Timer
def hello():
print("Hello")
t = Timer(0.05, hello)
t.start() # After 0.05 seconds, "Hello" will be printed
您还可以使用 pyautogui 作为:
import pyautogui
pyautogui._autoPause(0.05, False)
如果第一个参数不是 None,那么它将暂停第一个参数的秒数,在本例中:0.05 秒
如果第一个参数为 None,第二个参数为 True,那么它将在全局暂停设置中休眠,该设置设置为:
pyautogui.PAUSE = int
如果您想知道原因,请参阅源代码:
def _autoPause(pause, _pause):
"""If `pause` is not `None`, then sleep for `pause` seconds.
If `_pause` is `True`, then sleep for `PAUSE` seconds (the global pause setting).
This function is called at the end of all of PyAutoGUI's mouse and keyboard functions. Normally, `_pause`
is set to `True` to add a short sleep so that the user can engage the failsafe. By default, this sleep
is as long as `PAUSE` settings. However, this can be override by setting `pause`, in which case the sleep
is as long as `pause` seconds.
"""
if pause is not None:
time.sleep(pause)
elif _pause:
assert isinstance(PAUSE, int) or isinstance(PAUSE, float)
time.sleep(PAUSE)