python learning Notes: __ role of init__.py

 

package identity, rather than a folder.

• In pycharm in new, and Python Package Directory has two options.
• Directory and create separate package, found that the former is just an empty directory, which contains a __init__.py file.
• This is the package __init__.py identify the role, he told the python, this is not an ordinary directory but a python module package (module package).
• Usually empty file, but it must exist.

 

Import simplified block

For example: test.py would like to quote mysql.py and redis.py, because is not under the same folder, and not directly applicable.

 

 

__init__.py code is as follows:

The module in the current packet are introduced into __init__.py file, or blur introduced introducing both methods can be accurately.

# Vague import, import all 
# (representative of the current folder) 
from . Import * # precise import from . Import MySQL, Redis

 

test.py code is as follows:

import tools

 

Run about test.py, successful references mysql.py and redis.py