Python ConfigParser cannot search .ini file correctly (Ubuntu 14, Python 3.4)

Question

Problem: The code compiles fine but when ever i call the read_db_config function i get "Exception: mysql not found in the mysql_config.ini file"

The file is in the same directory but the main script runs two directories up using

import sys 
from Config.MySQL.python_mysql_dbconfig import read_db_config

I am new to python and have searched everywhere but i cannot seem to pinpoint my issue

Code:

from ConfigParser import ConfigParser

def read_db_config(filename='mysql_config.ini', section='mysql'):

    # create parser and read ini configuration file
    parser = ConfigParser()
    parser.read(filename)

    # get section, default to mysql
    db = {}
    if parser.has_section(section):
        items = parser.items(section)
        for item in items:
            db[item[0]] = item[1]
    else:
        raise Exception('{0} not found in the {1}  file'.format(section, filename))

    return db

mysql_config.ini:

[mysql]
database = testdba
user = root
password = test
unix_socket = /opt/lampp/var/mysql/mysql.sock

Answer 1

if you use relative paths for file or directory names python will look for them (or create them) in your current working directory (the $PWD variable in bash).

if you want to have them relative to the current python file, you can use (python 3.4)

from pathlib import Path
HERE = Path(__file__).parent.resolve()
CONFIG_PATH = HERE / '../etc/mysql_config.ini'

or (python 2.7)

import os.path
HERE = os.path.abspath(os.path.dirname(__file__))
CONFIG_PATH = os.path.join(HERE, '../etc/mysql_config.ini')

if your mysql_config.ini file lives in the etc directory below your python script.

you could of course always use absolute paths (starting with a /; i.e. /home/someuser/mysql_config.ini).