peewee

问题 I define a lot of model classes using peewee. ClassName.create_table() can generate the table,but only one table. How could I create all tables using a single statement? 回答1: Extending coleifer's answer with the assumption that all tables are grouped in one module: import inspect import peewee import tables models = [ obj for name, obj in inspect.getmembers( tables, lambda obj: type(obj) == type and issubclass(obj, peewee.Model) ) ] peewee.create_model_tables(models) 回答2: Peewee has a helper

问题 I define a lot of model classes using peewee. ClassName.create_table() can generate the table,but only one table. How could I create all tables using a single statement? 回答1: Extending coleifer's answer with the assumption that all tables are grouped in one module: import inspect import peewee import tables models = [ obj for name, obj in inspect.getmembers( tables, lambda obj: type(obj) == type and issubclass(obj, peewee.Model) ) ] peewee.create_model_tables(models) 回答2: Peewee has a helper

问题 I am trying to write a python decorator, that allows tracking an integer property in a class (which is responsible for a model run). By tracking I mean adding every change to a local database my_db.db . This works well with the given code below, as you can also be seen in the screenshot of the database entries. The problem I have is that I cannot differentiate between the integer properties of two instances of the MockModel . I created the field instance_id in order to differentiate between

问题 I have a simple problem. I am new to object oriented programming.. I have one big list of nested dictionaries, that should be presented within several tables. What I don't understand is how I can use objects to make this simpler. I am getting Google Analytics data for each user. LOGIC OF MY CODE: get the data for a single user (This data is in the format like this: {'sampleRate': 1, # Pageview activity 'sessions': [{'activityTime': '2020-01-08T15:48:38.012671Z', 'activityType': 'PAGEVIEW',

问题 I'm running nosetests which have a setup function that needs to load a different database than the production database. The ORM I'm using is peewee which requires that the database for a model is set in the definition. So I need to set a conditional variable but I don't know what condition to use in order to check if nosetest is running the file. I read on Stack Overflow that you can check for nose in sys.modules but I was wondering if there is a more exact way to check if nose is running.

问题 I've got a SQL statement that does what I need, but I'm having trouble converting it into the correlated Peewee statement. Here's the SQL I have now, note that I'm using a subquery right now, but I don't care that it's a subquery either way. select t.name, count(a.type_id) as total, ( select count(id) from assignment a where a.course_id = 7 and a.due_date < date() and a.type_id = t.id group by a.type_id order by a.type_id ) as completed from assignment a inner join type t on t.id = a.type_id

问题 I am trying to write a Python model which is capable of doing some processing in a PostgreSQL database using the multi-threading module and peewee. In single core mode the code works, however, when I try to run the code with multiple cores I am running into a SSL error. I would like to post the structure of my model in the hope that somebody can advice how to set of my model in a proper way. Currently, I have chosen to use an object oriented approach in which I make one connection which is