Remove test cruft.
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76
test.py
76
test.py
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#!/usr/bin/env python
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import argparse
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import functools
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import logging
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import pyrqlite.dbapi2 as dbapi2
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#import sqlite3 as dbapi2
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import sessionmaker, relationship
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from sqlalchemy.orm import Session
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from sqlalchemy import Table, Column, Integer, String, ForeignKey, Sequence, create_engine
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from sqlalchemy.dialects import registry
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registry.register("rqlite.pyrqlite", "sqlalchemy_rqlite.pyrqlite", "dialect")
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Base = declarative_base()
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books_authors = Table(
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"books_authors",
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Base.metadata,
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Column("book", Integer, ForeignKey("books.id")),
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Column("author", Integer, ForeignKey("authors.id")),
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)
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class Book(Base):
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__tablename__ = 'books'
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id = Column(Integer, primary_key=True)
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title = Column("title", String(50), nullable=False)
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authors = relationship(
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"Author",
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backref="books",
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secondary=books_authors
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)
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def __init__(self, title):
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self.title = title
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class Author(Base):
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__tablename__ = "authors"
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id = Column("id", Integer, Sequence("authors_id_seq"), primary_key=True)
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name = Column("name", String(50), nullable=False)
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def __init__(self, title):
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self.name = name
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument('-v', '--verbose', action='store_true', default=False)
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args = parser.parse_args()
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if args.verbose:
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logging.basicConfig()
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logging.getLogger().setLevel(logging.DEBUG)
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engine = create_engine('rqlite+pyrqlite://localhost:4001/', echo=args.verbose)
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Base.metadata.create_all(engine)
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session = Session(engine)
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#insert
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# for i in range(1):
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# book = Book("book about dbs2")
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# author = Author("footurist")
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# book.authors.append(author)
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# session.add(book)
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# session.commit()
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#delete
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desired_book = session.query(Book).filter_by(id=3).delete()
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#desired_author = session.query(Author).filter_by(id=2).first()
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#desired_book.authors.clear()
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#desired_book.authors.append(desired_author)
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session.commit()
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if __name__ == '__main__':
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main()
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49
test2.py
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test2.py
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from sqlalchemy import create_engine
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from sqlalchemy import Table, Column, Integer, String, ForeignKey, Sequence
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import sessionmaker, relationship
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Base = declarative_base()
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teachers_lessons = Table(
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"teachers_lessons",
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Base.metadata,
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Column("fk_teacher", Integer, ForeignKey("teachers.id")),
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Column("fk_lesson", Integer, ForeignKey("lessons.id")),
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)
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class Teacher(Base):
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__tablename__ = "teachers"
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id = Column("id", Integer, Sequence("teachers_id_seq"), primary_key=True)
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name = Column("name", String(50), nullable=False)
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lessons = relationship(
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"Lesson",
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backref="teachers",
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secondary=teachers_lessons
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)
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class Lesson(Base):
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__tablename__ = "lessons"
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id = Column("id", Integer, Sequence("lessons_id_seq"), primary_key=True)
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name = Column("name", String(50), nullable=False)
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engine = create_engine('rqlite+pyrqlite://localhost:4001/', echo=True)
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Base.metadata.create_all(engine)
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Session = sessionmaker(bind=engine)
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if __name__ == "__main__":
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t2 = s.query(Teacher).filter_by(name='NEWNEW').first()
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t2.lessons.clear()
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s.commit()
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