Python, how to check if a result set is empty?

Question

I have a sql statement that returns no hits. For example, \'select * from TAB where 1 = 2\'.

I want to check how many rows are returned,

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Answer 1

if you're connecting to a postgres database, the following works:

result = cursor.execute(query)

if result.returns_rows:
    # we got rows!
    return [{k:v for k,v in zip(result.keys(), r)} for r in result.rows]
else:
    return None