How can I use pyodbc to connect my local Python code to a Databricks SQL warehouse without creating a DSN?
To connect to a Databricks SQL warehouse using pyodbc without creating a DSN, you can use a DSN-less connection. Here's an example of how you can modify the `pyodbc.connect()` method to achieve this:

```python
import pyodbc

# Replace the placeholders with your actual SQL warehouse details
connection_string = (
    r'Driver={Databricks ODBC Driver 64-bit};'
    r'Server=your_server_url;'
    r'Database=your_database_name;'
    r'UID=token;'
    r'PWD=your_personal_access_token;'
    r'HTTPPath=your_http_path;'
    r'Port=443;'
    r'SSLMode=prefer;'
    r'UseNativeQuery=0;'
)

# Connect to the Databricks SQL warehouse using the connection string
conn = pyodbc.connect(connection_string, autocommit=True)

# Run a SQL query using the connection
cursor = conn.cursor()
cursor.execute(f"SELECT * FROM samples.nyctaxi.trips")

# Print the rows retrieved from the query
for row in cursor.fetchall():
    print(row)
```

Make sure to replace the placeholders (`your_server_url`, `your_database_name`, `your_personal_access_token`, and `your_http_path`) with your actual SQL warehouse details. You can find these details in the Databricks workspace under the SQL warehouse settings.

This example demonstrates how to connect to a Databricks SQL warehouse using pyodbc without creating a DSN. You can modify the connection string and SQL query to suit your specific needs.