case statement within insert

I want to insert data from mysql into a table in postgresql. I want to check when the subjectcode contains PE or NSTP so I can assign True or False to another column in destination DB.

# Source data:

 # Source data: MySQL
   curr_msql.execute(''' SELECT code, subjectname
                          FROM test_subj ''')

# Destination

for row in curr_msql:
            curr_psql.execute(''' INSERT INTO subs (
                                                    created, modified,
                                                    subjcode, subjname,
                                                    is_pe_or_nstp)

                                  VALUES (current_timestamp, current_timestamp,
                                          %s, %s,
                                          CASE
        WHEN code like '%%PE%%' or code like '%%NSTP%%'
        THEN True
        ELSE False
    END) ''', (row['code'], row['subjectname']))

I am getting TypeError: not all arguments converted during string formatting.

Any advice pls?