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How to use Python in Snowflake

By Nick Barth

Updated on March 6, 2024

Using Python with Snowflake can streamline data processing and analytics.

To get started:

  1. Install the `snowflake-connector-python` package using `pip`.
  2. Import the connector in your Python script: `import snowflake.connector`.
  3. Establish a connection to your Snowflake instance using your account credentials.
  4. Execute SQL statements by creating a cursor object and calling the `execute` method with your query.
  5. Fetch results using methods like `fetchone()`, `fetchall()`, or `fetch_pandas_all()` for integrating with pandas DataFrames. 
  6. Close the connection to free up resources.

Python script to query Snowflake and fetch results

import snowflake.connector

Connect to Snowflake

conn = snowflake.connector.connect(
⁠
⁠    user='YOUR_USERNAME',
⁠
⁠    password='YOUR_PASSWORD',
⁠
⁠    account='YOUR_ACCOUNT',
⁠
⁠    warehouse='YOUR_WAREHOUSE',
⁠
⁠    database='YOUR_DATABASE',
⁠
⁠    schema='YOUR_SCHEMA'
⁠
⁠)

Create a cursor object

cur = conn.cursor()
⁠
⁠try:
⁠
⁠    # Execute a query
⁠
⁠    cur.execute('SELECT * FROM your_table LIMIT 10')
⁠
⁠    # Fetch the results
⁠
⁠    results = cur.fetchall()
⁠
⁠    # Process results
⁠
⁠    for row in results:
⁠
⁠        print(row)
⁠
⁠finally:
⁠
⁠    # Close the cursor and connection
⁠
⁠    cur.close()
⁠
⁠    conn.close()

Always remember to handle your connections and resources properly to maintain security and efficiency.

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