Why Does SQLite3 Throw an \'Incorrect Number of Bindings Supplied\' Error, and How Can I Fix It?

Troubleshooting the "Incorrect Number of Bindings Supplied" Error in SQLite3

When inserting data into a database using SQLite3, programmers may encounter the error "Incorrect number of bindings supplied." This error signifies a mismatch between the number of values expected by the SQL statement and the number of arguments provided.

In the given code snippet, an attempt is made to insert a string into the database using the INSERT INTO images VALUES(?) statement. However, the provided input, which is a string, is treated as multiple bind values due to the absence of a comma. To resolve this issue, ensure that the argument passed to the cursor.execute() method is a tuple, denoted by the trailing comma:

cursor.execute('INSERT INTO images VALUES(?)', (img,))

By enclosing img within a tuple, it is treated as a single bind value, preventing the error from occurring.

This pattern, where a trailing comma is required to convert a single value into a tuple, is a common pitfall in Python programming. While it may seem unnecessary, it is a crucial step to avoid runtime errors.

The above is the detailed content of Why Does SQLite3 Throw an \'Incorrect Number of Bindings Supplied\' Error, and How Can I Fix It?. For more information, please follow other related articles on the PHP Chinese website!