子模块的python绝对导入失败

时间:2016-09-16 21:35:53

标签: python python-2.7 import package python-import

我看过其他帖子,但没有找到有效的答案!

文件结构

my_package/
      __init__.py -- empty
      test/
              __init__.py -- empty
              test1.py 

故障

from my_package import test
test.test1

给出

AttributeError: 'module' object has no attribute test

以下通行证

from my_package.test import test1

# or
import my_package.test.test1
from my_package import test
# now this works
test.tes1

<module 'my_package.test.test1' from ...

我有

 from __future__ import absolute_import 

在所有文件中,并使用python2.7

1 个答案:

答案 0 :(得分:1)

导入包时(如test),模块(如test1)不会自动导入(除非您在__init__.py中放置了一些特殊代码)。这与导入模块不同,模块的内容在模块名称空间中可用。与Python标准库的xml.etree.ElementTree模块进行比较:

>>> import xml
>>> xml.etree
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'etree'
>>> from xml import etree
>>> etree.ElementTree
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'ElementTree'
>>> from xml.etree import ElementTree
>>> ElementTree.ElementTree
<class 'xml.etree.ElementTree.ElementTree'>