原始 f 字符串中不支持的格式字符

Question

I'm trying to execute the following query using sqlalchemy.

engine=sqlalchemy.create_engine('mysql+pymysql://root:root@localhost:3306/cst')

cst_delete_query = rf"""delete from customer where STATUS like '%CT%'"""

with engine.connect().execution_options(autocommit=True) as conn:
     conn.execute(cst_delete_query)

This results in the following error:

ValueError: unsupported format character 'C' (0x43) at index 41

Answer 1

The percent character is a string operator and should be escaped to be used in a string. You can escape it with a second % .

cst_delete_query = rf"DELETE FROM customer WHERE status LIKE '%%CT%%'"