![]() Reraise(type(exception), exception, tb=exc_tb, cause=cause)įile "C:\Users\Martin\Desktop\regtry\venv\lib\site-packages\sqlalchemy\util\compat.py", line 152, in reraise Util.raise_from_cause(sqlalchemy_exception, exc_info)įile "C:\Users\Martin\Desktop\regtry\venv\lib\site-packages\sqlalchemy\util\compat.py", line 398, in raise_from_cause ![]() Return connection._execute_clauseelement(self, multiparams, params)įile "C:\Users\Martin\Desktop\regtry\venv\lib\site-packages\sqlalchemy\engine\base.py", line 1101, in _execute_clauseelementįile "C:\Users\Martin\Desktop\regtry\venv\lib\site-packages\sqlalchemy\engine\base.py", line 1250, in _execute_contextĮ, statement, parameters, cursor, contextįile "C:\Users\Martin\Desktop\regtry\venv\lib\site-packages\sqlalchemy\engine\base.py", line 1476, in _handle_dbapi_exception Result = conn.execute(querycontext.statement, self._params)įile "C:\Users\Martin\Desktop\regtry\venv\lib\site-packages\sqlalchemy\engine\base.py", line 982, in executeįile "C:\Users\Martin\Desktop\regtry\venv\lib\site-packages\sqlalchemy\sql\elements.py", line 287, in _execute_on_connection Return self._execute_and_instances(context)įile "C:\Users\Martin\Desktop\regtry\venv\lib\site-packages\sqlalchemy\orm\query.py", line 3392, in _execute_and_instances The above exception was the direct cause of the following exception:įile "C:\Users\Martin\Desktop\regtry\venv\lib\site-packages\sqlalchemy\orm\query.py", line 3211, in allįile "C:\Users\Martin\Desktop\regtry\venv\lib\site-packages\sqlalchemy\orm\query.py", line 3367, in _iter_ Sqlite3.OperationalError: no such table: students Traceback (most recent call last):įile "C:\Users\Martin\Desktop\regtry\venv\lib\site-packages\sqlalchemy\engine\base.py", line 1246, in _execute_contextįile "C:\Users\Martin\Desktop\regtry\venv\lib\site-packages\sqlalchemy\engine\default.py", line 581, in do_execute I compared my codes with my existing projects and it is the same. I've also executed the db.create_all() in the python shell after importing db. The db file is in the same directory as the init and models. Return render_template( "list.I've tried this before and it worked, now I'm doing it again but it doesn't. Return render_template( "result.html",msg = list (): 1įrom flask import Flask, render_template, request The following is the complete code for the Flask-SQLite application. Return render_template( "list.html",rows = rows)įinally, the ‘/‘ URL rule renders ‘home.html’, which is the entry point of the application. The application contains another list () function represented by the ‘/list’ URL.It populates’rows’ as a Multidict object that contains all records in the student table.This object is passed to the list.html template. The HTML script for result.html contains an escape statement, which displays the result of the Insert operation. Return render_template( "result.html",msg = msg) = )Ĭur.execute( "INSERT INTO students (name,addr,city,pin) The addrec () function retrieves the form’s data through the POST method and inserts the student table.The message corresponding to the success or error in the insert operation will be rendered as ‘result.html’. new_student ():Īs can be seen, the form data is published to the ‘/addrec’ URL of the binding addrec () function. The first new_student() function is bound to a URL rule ( '/enternew').It presents an HTML file that contains a student information form. Our Flask application has three View functions. 1Ĭonn.execute( 'CREATE TABLE students (name TEXT, addr TEXT, city TEXT, pin TEXT)') The program creates a SQLite database ‘database.db ‘ where the student tables are created. You can create an SQLite database from Python code. The SQLite database storse all data in a single file. Related course: Python Flask: Create Web Apps with Flask Create database and table Each database can have tables and each table can have records. SQLite is a relational database system that uses the SQL query language to interact with the database. W the Flask application interacts with SQLite. The SQlite3 module comes with the Python release.
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