Import module from parent directory

Question

Take a look at my file structure:

main/
    main.py
    __init__.py

    mysql/
        read.py
        __init__.py

    conf/
        mysql.py
        loc.py
        __init__.py

conf/mysql.py contains the information of a mysql server (port,hostname,etc...)

read.py is used to acquire and read value from a MySQL DB by connect to the server specified in conf/mysql.py.

What I wanted to achieve is to let read.py import conf/mysql.py, so I tried:

from conf import mysql
import main.conf.mysql

Both of them are not working. It gives me ImportError: No Module Name 'main' and ImportError: No Module Named 'conf', import conf/mysql.py only work in main.py

I know that appending to sys.path will work, but for some reasons, I don't wanna do that.

Any solutions to work around this issue? Thanks in advance and sorry for this complicated question.

@MuhammadBilal Does not work, python said `/` is invalid syntax. — RexLeong, Dec 20 '18 at 06:14
Make main as your current working project directory and script execution path in your IDE . It will work . Your code else use .sys.path (bad practice)to import the module — sahasrara62, Dec 20 '18 at 06:28
Possible duplicate of [Importing files from different folder](https://stackoverflow.com/questions/4383571/importing-files-from-different-folder) — sahasrara62, Dec 20 '18 at 06:31
@prashantrana All answer said append `sys.path`, but I find a better by appending sys.path, thanks. — RexLeong, Dec 20 '18 at 07:25

score 6 · Accepted Answer · answered Dec 20 '18 at 06:14

6

Since the main directory is the root directory of your project, you should not include main in your absolute import:

from conf import mysql

or with relative import, you can do:

from ..conf import mysql

answered Dec 20 '18 at 06:14

blhsing

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Thanks, the syntax is correct, but now it give me another error: `SystemError: Parent module '' not loaded, cannot perform relative import`, any solution? – RexLeong Dec 20 '18 at 06:17
1

You should run your project from `main.py` and do `from mysql import read` in `main.py` instead. – blhsing Dec 20 '18 at 06:23
1

`main.py` will call the function from `read.py`, so thats why I need to use relative import, Btw `from conf import mysql` does not work. – RexLeong Dec 20 '18 at 06:33
relative import does not work in python4.* – Nick May 25 '21 at 14:36

Import module from parent directory

1 Answers1