Import submodule from another one

Question

I though it was easy, but I just can't do it. I read in the doc that this should work :

File a/__init__.py

 #nothing here

File a/b.py

var = "hello world"

File a/c.py

import b
print(b.var)

From . :

>>> import a.c
ImportError: No module named 'b'

But it does not… What have I forgotten ? Is it because I use Python 3 ?

Answer 1

yes, it's because of Python3.

In Python 3, implicit relative imports within packages are no longer available

Changes in import statement python3

Answer 2

没关系，我相信您应该将文件保存在Program Files（x86）/ Lib中以创建一个新模块，适用于Python 2.7.6，但是很有可能也适用于Python 3.0。