mysqldb interfaceError

Question

I have a very weird problem with mysqldb (mysql module for python).

I have a file with queries for inserting records in tables. If I call the functions from the file, it works just fine; but when trying to call one of the functions from another file it throws me a

_mysql_exception.InterfaceError: (0, '')

I really don't get what I'm doing wrong here..

I call the function from buildDB.py :

import create

create.newFormat("HD", 0,0,0)

The function newFormat(..) is in create.py (imported) :

from Database import Database

db = Database()

def newFormat(name, width=0, height=0, fps=0):
    format_query = "INSERT INTO Format (form_name, form_width, form_height, form_fps)  VALUES ('"+name+"',"+str(width)+","+str(height)+","+str(fps)+");"
    db.execute(format_query)

And the class Database is the following :

import MySQLdb from MySQLdb.constants import FIELD_TYPE

class Database():
    def __init__(self):
        server = "localhost"
        login = "seq"
        password = "seqmanager"
        database = "Sequence"
        my_conv = { FIELD_TYPE.LONG: int }

        self.conn = MySQLdb.connection(host=server, user=login, passwd=password, db=database, conv=my_conv)
        # self.cursor = self.conn.cursor()

    def close(self):
        self.conn.close()

    def execute(self, query):
        self.conn.query(query)

(I put only relevant code)

Traceback :

Z:\sequenceManager\mysql>python buildDB.py
D:\ProgramFiles\Python26\lib\site-packages\MySQLdb\__init__.py:34: DeprecationWa
rning: the sets module is deprecated
  from sets import ImmutableSet
INSERT INTO Format (form_name, form_width, form_height, form_fps) VALUES ('HD',0
,0,0);
Traceback (most recent call last):
  File "buildDB.py", line 182, in <module>
    create.newFormat("HD")
  File "Z:\sequenceManager\mysql\create.py", line 52, in newFormat
    db.execute(format_query)
  File "Z:\sequenceManager\mysql\Database.py", line 19, in execute
    self.conn.query(query)
_mysql_exceptions.InterfaceError: (0, '')

The warning has never been a problem before so I don't think it's related.

Answer 1

I got this error when I was trying to use a closed connection.