为什么我不能使用PTVS在Python中导入此模块？

Question

I am using VS2013 with PTVS.

I can see the module datasets with dir():

>>> dir()
['__builtins__', '__doc__', '__name__', '__package__', 'datasets', 'pprint']

And datasets is a module:

>>> type(datasets)
<type 'module'>

But I cannot import the datasets module:

>>> import datasets
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named datasets

>>> from datasets import *
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named datasets

I did this because I don't want to save some typing of "datasets". Why this error?

Answer 1

dir() shows you the local variables. What this output means is that 1) you have a global variable named datasets , and 2) it references a module. This would normally indicate that someone has imported it already in your scope. But import itself does not operate on variables, it operates on modules directly.

If I had to guess, the module is probably not actually named datasets , it's just that someone did from .. import or import .. as . You need to find out what the actual name of the module is.