README.md

Snowflake Connector for Python

This package includes the Snowflake Connector for Python, which conforms to the Python DB API 2.0 specification.

The Snowflake Connector for Python provides an interface for developing Python applications that can connect to Snowflake and perform all standard operations. It provides a programming alternative to developing applications in Java or C/C++ using the Snowflake JDBC or ODBC drivers.

The connector has no dependencies on JDBC or ODBC. It can be installed using pip on Linux, Mac OSX, and Windows platforms where Python 3.8.0 (or higher) is installed.

Snowflake Documentation is available at: https://docs.snowflake.com/

Feel free to file an issue or submit a PR here for general cases. For official support, contact Snowflake support at: https://community.snowflake.com/s/article/How-To-Submit-a-Support-Case-in-Snowflake-Lodge

How to build

Locally

Install Python 3.8.0 or higher. Clone the Snowflake Connector for Python repository, then run the following commands to create a wheel package using PEP-517 build:

git clone git@github.com:snowflakedb/snowflake-connector-python.git
cd snowflake-connector-python
python -m pip install -U pip setuptools wheel build
python -m build --wheel .

Find the snowflake_connector_python*.whl package in the ./dist directory.

In Docker

Or use our Dockerized build script ci/build_docker.sh and find the built wheel files in dist/repaired_wheels.

Note: ci/build_docker.sh can be used to compile only certain versions, like this: ci/build_docker.sh "3.8 3.9"

Code hygiene and other utilities

These tools are integrated into tox to allow us to easily set them up universally on any computer.

• fix_lint: Runs pre-commit to check for a bunch of lint issues. This can be installed to run upon each time a commit is created locally, keep an eye out for the hint that this environment prints upon succeeding.
• coverage: Runs coverage.py to combine generated coverage data files. Useful when multiple categories were run and we would like to have an overall coverage data file created for them.
• flake8: (Deprecated) Similar to fix_lint, but only runs flake8 checks.

Disable telemetry

By default, the Snowflake Connector for Python collects telemetry data to improve the product. You can disable the telemetry data collection by setting the session parameter CLIENT_TELEMETRY_ENABLED to False when connecting to Snowflake:

import snowflake.connector
conn = snowflake.connector.connect(
    user='XXXX',
    password='XXXX',
    account='XXXX',
    session_parameters={
      "CLIENT_TELEMETRY_ENABLED": False,
    }
)

Alternatively, you can disable the telemetry data collection by setting the telemetry_enabled property to False on the SnowflakeConnection object:

import snowflake.connector
conn = snowflake.connector.connect(
    user='XXXX',
    password='XXXX',
    account='XXXX',
)
conn.telemetry_enabled = False

Verifying Package Signatures

To ensure the authenticity and integrity of the Python package, follow the steps below to verify the package signature using cosign.

Steps to verify the signature:

• Install cosign:
  • This example is using golang installation: installing-cosign-with-go
• Download the file from the repository like pypi:
  • https://pypi.org/project/snowflake-connector-python/#files
• Download the signature files from the release tag, replace the version number with the version you are verifying:
  • https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v3.12.2
• Verify signature:

  # replace the version number with the version you are verifying
  ./cosign verify-blob snowflake_connector_python-3.12.2.tar.gz \
  --key snowflake-connector-python-v3.12.2.pub \
  --signature resources.linux.snowflake_connector_python-3.12.2.tar.gz.sig
  
  Verified OK

NOTE

This library currently does not support GCP regional endpoints. Please ensure that any workloads using through this library do not require support for regional endpoints on GCP. If you have questions about this, please contact Snowflake Support.