multiprocessing-【 “Can’t pickle local object ‘PoolManager.__init__..‘】
多线程测试用例run时出错：
multiprocessing.pool.MaybeEncodingError: Error sending result: ’<appium.webdriver.webdriver.WebDriver (session=“261019ae-3776-4a78-aa2c-b24bb64ec62e”)>’. Reason: ’AttributeError(“Can’t pickle local object ‘PoolManager.__init__.<locals>.<lambda>‘“)’
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1.用线程替换进程
2.可以使用copy_reg来规避上面的异常.
3.dill 或pathos.multiprocesssing ：use 'import pathos.multiprocesssing', instead of 'import multiprocessing'. pathos.multiprocessing is a fork of multiprocessing that uses dill. dill can serialize almost anything in python, so you are able to send a lot more around in parallel.
参考来源：
https://blog.csdn.net/dutsoft/article/details/70336462
https://blog.csdn.net/izzzyx/article/details/54601624
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