Why Are My MySQL Updates Not Persisting in My Python Script?

Troubleshooting Failed MySQL Update with Python

In your Python script, you have encountered an issue where updates are not being persisted to the MySQL database, despite the script indicating successful row counts. To resolve this, it's essential to understand the fundamental nature of a database transaction.

A transaction consists of a series of operations that must either all execute or none. In Python MySQLdb, a transaction is initiated by the cursor object's execute() method. However, the changes are only temporary and held in the buffer until a commit() method is called.

In your case, you are initiating a transaction with the curb.execute() statement, but the changes are not committed using dbb.commit(). This leaves the database in an inconsistent state, resulting in unobserved updates.

To ensure successful database updates, insert the following line of code after curb.execute():

<code class="python">dbb.commit()</code>

This will explicitly commit the changes to the database, ensuring that the updates are persisted.

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