在利用JavaScriptCore与H5交互时出现异常提示: This application is modifying the autolayout engine from a background thread, which can lead to engine corruption and weird crashes. This will cause an exception in a future release. 从字面意思看,是因为在后台线程修改了UI,于是乎开始验证 _weak…
启动storm任务时,异常提示: 14182 [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2000] WARN o.a.s.s.o.a.z.s.NIOServerCnxn - caught end of stream exceptionorg.apache.storm.shade.org.apache.zookeeper.server.ServerCnxn$EndOfStreamException: Unable to read additional data f…
举例:打开一个不存在的文件时: >>open("abc.txt","r")会提示错误 Traceback (most recent call last): File "D:/project1/test.py", line 11, in <module> open("abc.txt","r")FileNotFoundError: [Errno 2] No such file or di…
PEP8 expected 2 blank lines, found 1 定义方法时,出现期望是2个空白行,但是实际检测到是1个.方法与上面内容间隔期望为两个换行符 PEP8 This dictionary creation could be rewritten as a dictionary literal 定义使用字典时,希望用重写的形式来定义内容,不希望建立的时候直接赋值. maps.dict() maps.update({"userName": "zhangsan&q…