10 秒后重新运行 python 脚本

Question

我试图每 10 秒重新运行一次我的 python 脚本。我已经尝试了 time.sleep 函数的各种方法，但似乎没有任何效果。我尝试过 time.sleep 的不同变体： def job()   # scriptif __name__ == '__main__':    while True:        job()        time.sleep(10)但没有找到正确的地点/方式来实施它。我不想重新运行函数，而是完整的代码。这是我尝试重新运行的脚本：import...def main():    # parse the command line arguments    args = ConfigArgumentParser(description=__doc__).parse_args()    if _debug: _log.debug("initialization")    if _debug: _log.debug("    - args: %r", args)    # make a device object    this_device = LocalDeviceObject(        objectName=args.ini.objectname,        objectIdentifier=('device', int(args.ini.objectidentifier)),        maxApduLengthAccepted=int(args.ini.maxapdulengthaccepted),        segmentationSupported=args.ini.segmentationsupported,        vendorIdentifier=int(args.ini.vendoridentifier),    )    # make a sample application    this_application = BIPSimpleApplication(this_device, args.ini.address)    # make some random input objects    for i in range(1, RANDOM_OBJECT_COUNT + 1):        ravo = RandomAnalogValueObject(            objectIdentifier=('analogValue', i),            objectName='Temp%d' % (i,),        )        this_application.add_object(ravo)    # make sure they are all there    _log.debug("    - object list: %r", this_device.objectList)    _log.debug("running")    run()    _log.debug("fini")if __name__ == "__main__":    main()

Answer 1

如果您需要运行整个过程（甚至是引导代码），您可以使用 shell 脚本来完成。

但这不会刷新环境变量。

#!/usr/bin/env bash

while true; do 

  sleep 10

  python script.py

done

如果您需要刷新环境变量（由于 RANDOM_OBJECTS，您似乎需要它），请添加eval "$(exec /usr/bin/env -i "${SHELL}" -l -c "export")"到其中。

Answer 2

尝试这个：

if __name__ == "__main__":
    time.sleep(10)
    main()

Answer 3

你能做的就是在 10 秒后重新启动整个脚本。

应用于您的代码，它看起来像这样：

import os

import time

import json

import sys

from bacpypes.debugging import bacpypes_debugging, ModuleLogger

from bacpypes.consolelogging import ConfigArgumentParser

from bacpypes.core import run

from bacpypes.primitivedata import Real

from bacpypes.object import AnalogValueObject, Property, register_object_type

from bacpypes.errors import ExecutionError

from bacpypes.app import BIPSimpleApplication

from bacpypes.local.device import LocalDeviceObject

# Read Json

with open('ObjectList.json') as json_file:

    data = json.load(json_file)

    def get_present_value(no):

        for a in data['AnalogValues']:

            if a['ObjectIdentifier'] == int(no):

                return a['PresentValue']

        return None

ai_1 = (get_present_value(1))

print(ai_1)

# some debugging

_debug = 0

_log = ModuleLogger(globals())

# settings

RANDOM_OBJECT_COUNT = int(os.getenv('RANDOM_OBJECT_COUNT', 1))

#

#   RandomValueProperty

#

class RandomValueProperty(Property):

    def __init__(self, identifier):

        if _debug: RandomValueProperty._debug("__init__ %r", identifier)

        Property.__init__(self, identifier, Real, default=0.0, optional=True, mutable=False)

    def ReadProperty(self, obj, arrayIndex=None):

        if _debug: RandomValueProperty._debug("ReadProperty %r arrayIndex=%r", obj, arrayIndex)

        # access an array

        if arrayIndex is not None:

            raise ExecutionError(errorClass='property', errorCode='propertyIsNotAnArray')

        # return a random value

        value = ai_1

        if _debug: RandomValueProperty._debug("    - value: %r", value)

        return value

    def WriteProperty(self, obj, value, arrayIndex=None, priority=None, direct=False):

        if _debug: RandomValueProperty._debug("WriteProperty %r %r arrayIndex=%r priority=%r direct=%r", obj, value,

                                              arrayIndex, priority, direct)

        raise ExecutionError(errorClass='property', errorCode='writeAccessDenied')

bacpypes_debugging(RandomValueProperty)

#

#   Random Value Object Type

#

class RandomAnalogValueObject(AnalogValueObject):

    properties = [

        RandomValueProperty('presentValue'),

    ]

    def __init__(self, **kwargs):

        if _debug: RandomAnalogValueObject._debug("__init__ %r", kwargs)

        AnalogValueObject.__init__(self, **kwargs)

bacpypes_debugging(RandomAnalogValueObject)

register_object_type(RandomAnalogValueObject)

#

#   __main__

#

def main():

    # parse the command line arguments

    args = ConfigArgumentParser(description=__doc__).parse_args()

    if _debug: _log.debug("initialization")

    if _debug: _log.debug("    - args: %r", args)

    # make a device object

    this_device = LocalDeviceObject(

        objectName=args.ini.objectname,

        objectIdentifier=('device', int(args.ini.objectidentifier)),

        maxApduLengthAccepted=int(args.ini.maxapdulengthaccepted),

        segmentationSupported=args.ini.segmentationsupported,

        vendorIdentifier=int(args.ini.vendoridentifier),

    )

    # make a sample application

    this_application = BIPSimpleApplication(this_device, args.ini.address)

    # make some random input objects

    for i in range(1, RANDOM_OBJECT_COUNT + 1):

        ravo = RandomAnalogValueObject(

            objectIdentifier=('analogValue', i),

            objectName='Temp%d' % (i,),

        )

        this_application.add_object(ravo)

    # make sure they are all there

    _log.debug("    - object list: %r", this_device.objectList)

    _log.debug("running")

    run()

    _log.debug("fini")

if __name__ == "__main__":

    main()

    time.sleep(10)

    os.execl(sys.executable, sys.executable, * sys.argv)  # Your script restarts after 10s with this