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Project Description

This package contains the community driven pure-Python NuoDB client library that provides both a standard PEP 249 SQL API, a NuoDB administration API. This is a community driven driver with limited support and testing from NuoDB.

Requirements

  • Python – one of the following:
  • NuoDB – one of the following:

If you haven’t done so already, Download and Install NuoDB.

Installation

The last stable release is available on PyPI and can be installed with pip:

$ pip install pynuodb

Alternatively (e.g. if pip is not available), a tarball can be downloaded from GitHub and installed with Setuptools:

$ curl -L https://github.com/nuodb/nuodb-python/archive/master.tar.gz | tar xz
$ cd nuodb-python*
$ python setup.py install
$ # The folder nuodb-python* can be safely removed now.

Example

Here is an example using the PEP 249 API that creates some tables, inserts some data, runs a query, and cleans up after itself:

import pynuodb

options = {"schema": "test"}
connect_kw_args = {'database': "test", 'host': "localhost", 'user': "dba", 'password': "dba", 'options': options}

connection = pynuodb.connect(**connect_kw_args)
cursor = connection.cursor()

stmt_drop = "DROP TABLE IF EXISTS names"
cursor.execute(stmt_drop)

stmt_create = """
CREATE TABLE names (
    id BIGINT NOT NULL GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
    name VARCHAR(30) DEFAULT '' NOT NULL,
    age INTEGER DEFAULT 0
)"""
cursor.execute(stmt_create)

names = (('Greg', 17,), ('Marsha', 16,), ('Jan', 14,))
stmt_insert = "INSERT INTO names (name, age) VALUES (?, ?)"
cursor.executemany(stmt_insert, names)

connection.commit()

age_limit = 15
stmt_select = "SELECT id, name FROM names where age > ? ORDER BY id"
cursor.execute(stmt_select, (age_limit,))
print("Results:")
for row in cursor.fetchall():
    print("%d | %s" % (row[0], row[1]))

cursor.execute(stmt_drop)
cursor.close()
connection.close()

All sorts of management and monitoring operations may be performed through the NuoDB Python API, a few below include listening to database state, and shutting down a database:

import time
from pynuodb import entity

class DatabaseListener(object):
    def __init__(self):
        self.db_left = False

    def process_left(self, process):
        print("process left: %s" % process)

    def database_left(self, database):
        print("database shutdown: %s" % database)
        self.db_left = True

listener = DatabaseListener()
domain = entity.Domain("localhost", "domain", "bird", listener)
try:
    database = domain.get_database("test")
    if database is not None:
        database.shutdown(graceful=True)
        for i in range(1, 20):
            time.sleep(0.25)
            if listener.db_left:
                time.sleep(1)
                break
finally:
    domain.disconnect()

For further information on getting started with NuoDB, please refer to the Documentation.

License

PyNuoDB is licensed under a BSD 3-Clause License.

Release History

Release History

2.3.2

This version

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2.3.1

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2.3

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2.2

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2.1

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2.0

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0.5

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0.4

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0.3

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0.2

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0.1

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Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
pynuodb-2.3.2.tar.gz (38.1 kB) Copy SHA256 Checksum SHA256 Source Aug 28, 2015

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