{"id":191,"date":"2016-05-26T16:44:36","date_gmt":"2016-05-26T16:44:36","guid":{"rendered":""},"modified":"2016-05-26T16:44:36","modified_gmt":"2016-05-26T16:44:36","slug":"","status":"publish","type":"post","link":"http:\/\/weizn.net\/?p=191","title":{"rendered":"Python callback demo"},"content":{"rendered":"

import threading<\/span>
\nimport time<\/span><\/p>\n

class TestThread(threading.Thread):<\/span>
\n    def __init__(self,id,callback):<\/span>
\n        threading.Thread.__init__(self)<\/span>
\n        self.id = id<\/span>
\n        self.callback = callback<\/span>
\n        self.active = True<\/span><\/p>\n

    def run(self):<\/span>
\n        while self.active:<\/span>
\n            self.callback(self.id)<\/span>
\n            time.sleep(1)<\/span><\/p>\n

\nclass sessions:<\/span>
\n    def __init__(self):<\/span>
\n        self.thread = None<\/span>
\n        self.str=”callback id:”<\/span><\/p>\n

    def callback(self, id):<\/span>
\n        print self.str,id<\/span><\/p>\n

    def create_thread(self, id):<\/span>
\n        self.thread=TestThread(id,self.callback)<\/span>
\n        self.thread.start()<\/span><\/p>\n

    def clean_thread(self):<\/span>
\n        if self.thread:<\/span>
\n            self.thread.active=False<\/span>
\n            self.thread=None<\/span><\/p>\n

\nif __name__ == ‘__main__’:<\/span>
\n    sess=sessions()<\/span><\/p>\n

    for i in range(100):<\/span>
\n        sess.create_thread(i)<\/span>
\n        time.sleep(1)<\/span>
\n        sess.clean_thread()<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

import threading<\/span>
import time<\/span><\/p>\n

class TestThread(threading.Thread):<\/span>
    def __init__(self,id,callback):<\/span>
        threading.Thread.__init__(self)<\/span>
        self.i…<\/span><\/p>\n","protected":false},"author":1,"featured_media":560,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[334],"tags":[],"class_list":["post-191","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"yoast_head":"\nPython callback demo - Wayne's Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/weizn.net\/?p=191\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python callback demo - Wayne's Blog\" \/>\n<meta property=\"og:description\" content=\"import threadingimport timeclass TestThread(threading.Thread):    def __init__(self,id,callback):        threading.Thread.__init__(self)        self.i...\" \/>\n<meta property=\"og:url\" content=\"http:\/\/weizn.net\/?p=191\" \/>\n<meta property=\"og:site_name\" content=\"Wayne's Blog\" \/>\n<meta property=\"article:published_time\" content=\"2016-05-26T16:44:36+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"zinan\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"http:\/\/weizn.net\/#website\",\"url\":\"http:\/\/weizn.net\/\",\"name\":\"Wayne's Blog\",\"description\":\"\",\"publisher\":{\"@id\":\"http:\/\/weizn.net\/#\/schema\/person\/e88bc12c590502d8b6249326f960b264\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"http:\/\/weizn.net\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"ImageObject\",\"@id\":\"http:\/\/weizn.net\/?p=191#primaryimage\",\"inLanguage\":\"zh-Hans\",\"url\":\"http:\/\/weizn.net\/wp-content\/uploads\/2019\/01\/w6n3meqs5ksiak2pnn0qw1kessd2-ua3fq3x40.jpg\",\"contentUrl\":\"http:\/\/weizn.net\/wp-content\/uploads\/2019\/01\/w6n3meqs5ksiak2pnn0qw1kessd2-ua3fq3x40.jpg\",\"width\":1280,\"height\":720},{\"@type\":\"WebPage\",\"@id\":\"http:\/\/weizn.net\/?p=191#webpage\",\"url\":\"http:\/\/weizn.net\/?p=191\",\"name\":\"Python callback demo - 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