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?