mysql operations using variables as the table name

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I want to use python mysql database operations to achieve the following results:
the sql statement table name is replaced with a variable operating table in batches

sql = "select * from sets where number = '%s' "

Sql statement sets the number and replaced with a variable, a plurality of tables for automatic operation:

1 2 3 4

table = "sets" attr = "number" sql = "select * from "+table+" where "+attr+" = '%s'"

Original link large column  https://www.dazhuanlan.com/2019/08/15/5d5514c4c63b6/