From 48a81c879589a099267b1c61cf1c5ccc3ab4dbfd Mon Sep 17 00:00:00 2001 From: junos Date: Fri, 7 May 2021 15:49:33 +0200 Subject: [PATCH] Delete remaining Jupyter Notebook. --- config/ORMtutorial.ipynb | 488 --------------------------------------- 1 file changed, 488 deletions(-) delete mode 100644 config/ORMtutorial.ipynb diff --git a/config/ORMtutorial.ipynb b/config/ORMtutorial.ipynb deleted file mode 100644 index 2cefcec..0000000 --- a/config/ORMtutorial.ipynb +++ /dev/null @@ -1,488 +0,0 @@ -{ - "cells": [ - { - "cell_type": "code", - "execution_count": 1, - "metadata": {}, - "outputs": [ - { - "data": { - "text/plain": [ - "'1.3.21'" - ] - }, - "execution_count": 1, - "metadata": {}, - "output_type": "execute_result" - } - ], - "source": [ - "import sqlalchemy\n", - "sqlalchemy.__version__ " - ] - }, - { - "cell_type": "code", - "execution_count": 2, - "metadata": {}, - "outputs": [], - "source": [ - "from sqlalchemy import create_engine\n", - "engine = create_engine('sqlite:///:memory:', echo=True)" - ] - }, - { - "cell_type": "code", - "execution_count": 3, - "metadata": {}, - "outputs": [], - "source": [ - "from sqlalchemy.ext.declarative import declarative_base\n", - "Base = declarative_base()" - ] - }, - { - "cell_type": "code", - "execution_count": 4, - "metadata": {}, - "outputs": [], - "source": [ - "from sqlalchemy import Column, Integer, String\n", - "class User(Base):\n", - " __tablename__ = 'users'\n", - "\n", - " id = Column(Integer, primary_key=True)\n", - " name = Column(String)\n", - " fullname = Column(String)\n", - " nickname = Column(String)\n", - "\n", - " def __repr__(self):\n", - " return \"\" % (\n", - " self.name, self.fullname, self.nickname)" - ] - }, - { - "cell_type": "code", - "execution_count": 5, - "metadata": {}, - "outputs": [ - { - "data": { - "text/plain": [ - "Table('users', MetaData(bind=None), Column('id', Integer(), table=, primary_key=True, nullable=False), Column('name', String(), table=), Column('fullname', String(), table=), Column('nickname', String(), table=), schema=None)" - ] - }, - "execution_count": 5, - "metadata": {}, - "output_type": "execute_result" - } - ], - "source": [ - "User.__table__ " - ] - }, - { - "cell_type": "code", - "execution_count": 6, - "metadata": {}, - "outputs": [ - { - "name": "stdout", - "output_type": "stream", - "text": [ - "2020-12-24 16:56:29,385 INFO sqlalchemy.engine.base.Engine SELECT CAST('test plain returns' AS VARCHAR(60)) AS anon_1\n", - "2020-12-24 16:56:29,386 INFO sqlalchemy.engine.base.Engine ()\n", - "2020-12-24 16:56:29,388 INFO sqlalchemy.engine.base.Engine SELECT CAST('test unicode returns' AS VARCHAR(60)) AS anon_1\n", - "2020-12-24 16:56:29,388 INFO sqlalchemy.engine.base.Engine ()\n", - "2020-12-24 16:56:29,390 INFO sqlalchemy.engine.base.Engine PRAGMA main.table_info(\"users\")\n", - "2020-12-24 16:56:29,391 INFO sqlalchemy.engine.base.Engine ()\n", - "2020-12-24 16:56:29,392 INFO sqlalchemy.engine.base.Engine PRAGMA temp.table_info(\"users\")\n", - "2020-12-24 16:56:29,394 INFO sqlalchemy.engine.base.Engine ()\n", - "2020-12-24 16:56:29,395 INFO sqlalchemy.engine.base.Engine \n", - "CREATE TABLE users (\n", - "\tid INTEGER NOT NULL, \n", - "\tname VARCHAR, \n", - "\tfullname VARCHAR, \n", - "\tnickname VARCHAR, \n", - "\tPRIMARY KEY (id)\n", - ")\n", - "\n", - "\n", - "2020-12-24 16:56:29,396 INFO sqlalchemy.engine.base.Engine ()\n", - "2020-12-24 16:56:29,400 INFO sqlalchemy.engine.base.Engine COMMIT\n" - ] - } - ], - "source": [ - "Base.metadata.create_all(engine)" - ] - }, - { - "cell_type": "code", - "execution_count": 7, - "metadata": {}, - "outputs": [ - { - "name": "stdout", - "output_type": "stream", - "text": [ - "ed\n", - "edsnickname\n", - "None\n" - ] - } - ], - "source": [ - "ed_user = User(name='ed', fullname='Ed Jones', nickname='edsnickname')\n", - "print(ed_user.name)\n", - "print(ed_user.nickname)\n", - "print(str(ed_user.id))" - ] - }, - { - "cell_type": "code", - "execution_count": 8, - "metadata": {}, - "outputs": [], - "source": [ - "from sqlalchemy.orm import sessionmaker\n", - "Session = sessionmaker(bind=engine)\n", - "session = Session()" - ] - }, - { - "cell_type": "markdown", - "metadata": {}, - "source": [ - "# Adding and Updating Objects" - ] - }, - { - "cell_type": "code", - "execution_count": 9, - "metadata": {}, - "outputs": [], - "source": [ - "ed_user = User(name='ed', fullname='Ed Jones', nickname='edsnickname')\n", - "session.add(ed_user)" - ] - }, - { - "cell_type": "code", - "execution_count": 10, - "metadata": {}, - "outputs": [ - { - "name": "stdout", - "output_type": "stream", - "text": [ - "2020-12-24 16:56:29,442 INFO sqlalchemy.engine.base.Engine BEGIN (implicit)\n", - "2020-12-24 16:56:29,449 INFO sqlalchemy.engine.base.Engine INSERT INTO users (name, fullname, nickname) VALUES (?, ?, ?)\n", - "2020-12-24 16:56:29,450 INFO sqlalchemy.engine.base.Engine ('ed', 'Ed Jones', 'edsnickname')\n", - "2020-12-24 16:56:29,452 INFO sqlalchemy.engine.base.Engine SELECT users.id AS users_id, users.name AS users_name, users.fullname AS users_fullname, users.nickname AS users_nickname \n", - "FROM users \n", - "WHERE users.name = ?\n", - " LIMIT ? OFFSET ?\n", - "2020-12-24 16:56:29,455 INFO sqlalchemy.engine.base.Engine ('ed', 1, 0)\n" - ] - }, - { - "data": { - "text/plain": [ - "" - ] - }, - "execution_count": 10, - "metadata": {}, - "output_type": "execute_result" - } - ], - "source": [ - "our_user = session.query(User).filter_by(name='ed').first() \n", - "our_user" - ] - }, - { - "cell_type": "code", - "execution_count": 11, - "metadata": {}, - "outputs": [ - { - "data": { - "text/plain": [ - "True" - ] - }, - "execution_count": 11, - "metadata": {}, - "output_type": "execute_result" - } - ], - "source": [ - "ed_user is our_user" - ] - }, - { - "cell_type": "code", - "execution_count": 12, - "metadata": {}, - "outputs": [], - "source": [ - "session.add_all([\n", - " User(name='wendy', fullname='Wendy Williams', nickname='windy'),\n", - " User(name='mary', fullname='Mary Contrary', nickname='mary'),\n", - " User(name='fred', fullname='Fred Flintstone', nickname='freddy')])" - ] - }, - { - "cell_type": "code", - "execution_count": 13, - "metadata": {}, - "outputs": [], - "source": [ - "ed_user.nickname = 'eddie'" - ] - }, - { - "cell_type": "code", - "execution_count": 14, - "metadata": {}, - "outputs": [ - { - "data": { - "text/plain": [ - "IdentitySet([])" - ] - }, - "execution_count": 14, - "metadata": {}, - "output_type": "execute_result" - } - ], - "source": [ - "session.dirty" - ] - }, - { - "cell_type": "code", - "execution_count": 15, - "metadata": {}, - "outputs": [ - { - "data": { - "text/plain": [ - "IdentitySet([, , ])" - ] - }, - "execution_count": 15, - "metadata": {}, - "output_type": "execute_result" - } - ], - "source": [ - "session.new " - ] - }, - { - "cell_type": "code", - "execution_count": 16, - "metadata": {}, - "outputs": [ - { - "name": "stdout", - "output_type": "stream", - "text": [ - "2020-12-24 16:56:29,513 INFO sqlalchemy.engine.base.Engine UPDATE users SET nickname=? WHERE users.id = ?\n", - "2020-12-24 16:56:29,514 INFO sqlalchemy.engine.base.Engine ('eddie', 1)\n", - "2020-12-24 16:56:29,515 INFO sqlalchemy.engine.base.Engine INSERT INTO users (name, fullname, nickname) VALUES (?, ?, ?)\n", - "2020-12-24 16:56:29,520 INFO sqlalchemy.engine.base.Engine ('wendy', 'Wendy Williams', 'windy')\n", - "2020-12-24 16:56:29,521 INFO sqlalchemy.engine.base.Engine INSERT INTO users (name, fullname, nickname) VALUES (?, ?, ?)\n", - "2020-12-24 16:56:29,521 INFO sqlalchemy.engine.base.Engine ('mary', 'Mary Contrary', 'mary')\n", - "2020-12-24 16:56:29,522 INFO sqlalchemy.engine.base.Engine INSERT INTO users (name, fullname, nickname) VALUES (?, ?, ?)\n", - "2020-12-24 16:56:29,523 INFO sqlalchemy.engine.base.Engine ('fred', 'Fred Flintstone', 'freddy')\n", - "2020-12-24 16:56:29,525 INFO sqlalchemy.engine.base.Engine COMMIT\n" - ] - } - ], - "source": [ - "session.commit()" - ] - }, - { - "cell_type": "code", - "execution_count": 17, - "metadata": {}, - "outputs": [ - { - "name": "stdout", - "output_type": "stream", - "text": [ - "2020-12-24 16:56:29,534 INFO sqlalchemy.engine.base.Engine BEGIN (implicit)\n", - "2020-12-24 16:56:29,538 INFO sqlalchemy.engine.base.Engine SELECT users.id AS users_id, users.name AS users_name, users.fullname AS users_fullname, users.nickname AS users_nickname \n", - "FROM users \n", - "WHERE users.id = ?\n", - "2020-12-24 16:56:29,539 INFO sqlalchemy.engine.base.Engine (1,)\n" - ] - }, - { - "data": { - "text/plain": [ - "1" - ] - }, - "execution_count": 17, - "metadata": {}, - "output_type": "execute_result" - } - ], - "source": [ - "ed_user.id " - ] - }, - { - "cell_type": "markdown", - "metadata": {}, - "source": [ - "# Rolling back" - ] - }, - { - "cell_type": "code", - "execution_count": 18, - "metadata": {}, - "outputs": [], - "source": [ - "ed_user.name = 'Edwardo'" - ] - }, - { - "cell_type": "code", - "execution_count": 19, - "metadata": {}, - "outputs": [], - "source": [ - "fake_user = User(name='fakeuser', fullname='Invalid', nickname='12345')\n", - "session.add(fake_user)" - ] - }, - { - "cell_type": "code", - "execution_count": 20, - "metadata": {}, - "outputs": [ - { - "name": "stdout", - "output_type": "stream", - "text": [ - "2020-12-24 16:56:29,569 INFO sqlalchemy.engine.base.Engine UPDATE users SET name=? WHERE users.id = ?\n", - "2020-12-24 16:56:29,571 INFO sqlalchemy.engine.base.Engine ('Edwardo', 1)\n", - "2020-12-24 16:56:29,573 INFO sqlalchemy.engine.base.Engine INSERT INTO users (name, fullname, nickname) VALUES (?, ?, ?)\n", - "2020-12-24 16:56:29,573 INFO sqlalchemy.engine.base.Engine ('fakeuser', 'Invalid', '12345')\n", - "2020-12-24 16:56:29,576 INFO sqlalchemy.engine.base.Engine SELECT users.id AS users_id, users.name AS users_name, users.fullname AS users_fullname, users.nickname AS users_nickname \n", - "FROM users \n", - "WHERE users.name IN (?, ?)\n", - "2020-12-24 16:56:29,580 INFO sqlalchemy.engine.base.Engine ('Edwardo', 'fakeuser')\n" - ] - }, - { - "data": { - "text/plain": [ - "[,\n", - " ]" - ] - }, - "execution_count": 20, - "metadata": {}, - "output_type": "execute_result" - } - ], - "source": [ - "session.query(User).filter(User.name.in_(['Edwardo', 'fakeuser'])).all()" - ] - }, - { - "cell_type": "code", - "execution_count": 21, - "metadata": {}, - "outputs": [ - { - "name": "stdout", - "output_type": "stream", - "text": [ - "2020-12-24 16:56:29,591 INFO sqlalchemy.engine.base.Engine ROLLBACK\n", - "2020-12-24 16:56:29,594 INFO sqlalchemy.engine.base.Engine BEGIN (implicit)\n", - "2020-12-24 16:56:29,596 INFO sqlalchemy.engine.base.Engine SELECT users.id AS users_id, users.name AS users_name, users.fullname AS users_fullname, users.nickname AS users_nickname \n", - "FROM users \n", - "WHERE users.id = ?\n", - "2020-12-24 16:56:29,597 INFO sqlalchemy.engine.base.Engine (1,)\n", - "ed\n", - "False\n" - ] - } - ], - "source": [ - "session.rollback()\n", - "print(ed_user.name)\n", - "print(fake_user in session)" - ] - }, - { - "cell_type": "code", - "execution_count": 22, - "metadata": {}, - "outputs": [ - { - "name": "stdout", - "output_type": "stream", - "text": [ - "2020-12-24 16:56:29,607 INFO sqlalchemy.engine.base.Engine SELECT users.id AS users_id, users.name AS users_name, users.fullname AS users_fullname, users.nickname AS users_nickname \n", - "FROM users \n", - "WHERE users.name IN (?, ?)\n", - "2020-12-24 16:56:29,611 INFO sqlalchemy.engine.base.Engine ('ed', 'fakeuser')\n" - ] - }, - { - "data": { - "text/plain": [ - "[]" - ] - }, - "execution_count": 22, - "metadata": {}, - "output_type": "execute_result" - } - ], - "source": [ - "session.query(User).filter(User.name.in_(['ed', 'fakeuser'])).all()" - ] - }, - { - "cell_type": "code", - "execution_count": null, - "metadata": {}, - "outputs": [], - "source": [] - } - ], - "metadata": { - "kernelspec": { - "display_name": "Python 3", - "language": "python", - "name": "python3" - }, - "language_info": { - "codemirror_mode": { - "name": "ipython", - "version": 3 - }, - "file_extension": ".py", - "mimetype": "text/x-python", - "name": "python", - "nbconvert_exporter": "python", - "pygments_lexer": "ipython3", - "version": "3.9.1" - } - }, - "nbformat": 4, - "nbformat_minor": 4 -}