Why Does \'commands out of sync\' Occur in Python MySQL Interactions and How Can It Be Fixed?

Error Message: "Commands Out of Sync" in Python with MySQL

When executing a stored procedure from Python via Django, users may encounter the error message "commands out of sync; you can't run this command now." This issue arises when attempting to execute subsequent statements after calling a procedure, preventing successful transaction committal.

The problem is not isolated to complex stored procedures but can also occur with simplified ones. In the example provided, calling 'cursor.callproc()' followed by 'cursor.fetchall()' and 'cursor.execute()' triggers the error.

Solution:

To resolve this issue, the cursor object must be closed and reopened before executing any more statements:

cursor.close()
cursor = connection.cursor()

By closing the cursor and reopening it, the connection state is reset, allowing subsequent commands to execute without the "commands out of sync" error. Note that the result set retrieved with 'fetchall()' remains accessible after closing the cursor.

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