I have a table with a column of type date with entries like 2016-00-00 (only partially set, e.g. the year only). pymysql fails to return this.

import pymysql
conn = pymysql.connect(...)
cur = conn.cursor()
cur.execute("SELECT publish_date FROM pub")
for row in cur:
    print(row)

Will print only (None,).

I also reported this for peewee although it looks like this is a bug on pymysql side but I'm not exactly sure.

A work around is to use

cur.execute("SELECT CAST(publish_date AS char) FROM pub")

which will return the date as a string (e.g. it prints ("2016-00-00",)).