# clustering using kmeans algorithm X_clus=features_df[['honeybee','osmia','bumbles','andrena']]# standardize the dataset using standard scaler scaler=StandardScaler()scaler.fit(X_clus)X_new_clus=scaler.transform(X_clus)#Kmeans clustering clustering=KMeans(n_clusters=3,random_state=42)cluste...
request dispatching as well as error handlers. Because this means that it might be called as a result of a failure a special safe mode is available which can be enabled with the `from_error_handler` flag. If enabled, failures in response processing will be logged and otherwise ignored. :in...
复制 RuntimeError:Working outsideofapplication context.This typically means that you attempted to use functionality that needed tointerfacewiththe current application objectinsome way.To solvethis,setup an application contextwithapp.app_context(). 如果要直接使用current_app就要手动推送(push)应用上下文实例...
TCPServer): pass if __name__ == "__main__": # Port 0 means to select an arbitrary unused port HOST, PORT = "localhost", 9999 server = ThreadedTCPServer((HOST, PORT), ThreadedTCPRequestHandler) ip, port = server.server_address server.serve_forever() 再建立一个socket_client.py文件...
The “micro” in microframework means Flask aims to keep the core simple but extensible. 在介绍Flask时,官方在开头就把Flask的主要特色介绍出来,就是“micro”和“flexible”,核心简单,扩展丰富,对比Django来说,这一点实际上意味着Flask在大佬手中就是“变形金刚”,可以安装各种武器;在菜鸟手中就是“拨浪鼓”...
Because this means that it might be called as a result of a failure a special safe mode is available which can be enabled with the `from_error_handler` flag. If enabled, failures in response processing will be logged and otherwise ignored. ...
select/True: (which is the default) means that SQLAlchemy will load the data as necessary in one go using a standard select statement. joined/False: tells SQLAlchemy to load the relationship in the same query as the parent using a JOIN statement. ...
application instance (which means process usually). :internal:"""ifself._got_first_request:returnwith self._before_request_lock:ifself._got_first_request:return#self.before_first_request_funcs = [],列表中存放函数forfuncinself.before_first_request_funcs: ...
Request context preservation in debug mode now keeps the exception information around which means that teardown handlers are able to distinguish error from success cases. Added the JSONIFY_PRETTYPRINT_REGULAR configuration variable. Flask now orders JSON keys by default to not trash HTTP caches due ...
先看报错: RuntimeError: Working outside of application context. This typically means that you attempted to use functionality that needed to interface with the current application object in some way. To so... 查看原文 python框架之flask 请求上下文和应用程序上下文自动和手动推送的原理(flask的核心机制...