On 04/08/2011 11:13 AM, leechau wrote:
Steven wrote:
leechau wrote:
I wrote module1 in package1, and want to use a method named
'method1' in
module1, the caller(test.py) is like this:
import package1
package1.module1.method1()
[...]
When i run test.py, the output is:
AttributeError: 'module' object has no attribute 'module1'
File "e:\MyDoc\GODU_BVT\test.py", line 2, in <module>
package1.module1.method1()
If test.py is modified to:
import package1.module1
...
then everything goes well.
Yes, that is correct, and that is a deliberate design.
What if your package had a 1000 sub-modules, each of which were big? You
wouldn't want loading the main package to automatically load all 1000
sub-modules, if you only needed 1.
You either import the sub-module by hand:
import package1.module1
and now you can use package1.module1.method1 (not really a method,
actually a function). If you want module1 to automatically be available
after importing the package, include one of these in the package1
__init__.py file:
import module1 # should work in Python 2
and now package1 will include the module1 in its namespace.
--
Steven
Thanks for Steven's exellent and patient explanations. How should I do
if automatically import a module in Python 3? Thanks again.
--
leechau
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Hello,
Test it simply!
You will get answer in 3 seconds.
;o)
Regards
Karim
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