ValueError usupported format character 'd' with psycopg2

Question

I have code like this:

print \"company_id = %d\" % company_id
...
db.cursor.execute(\"insert into person (company_id, first, last, type) values (%d, \'%s\',          


        

Answer 1

From the Psycopg FAQ:

Q: I can’t pass an integer or a float parameter to my query: it says a number is required, but it is a number!

A: In your query string, you always have to use %s placeholders, even when passing a number. All Python objects are converted by Psycopg in their SQL representation, so they get passed to the query as strings. See Passing parameters to SQL queries.

Replace the %d with %s.