python-import

问题 I'm trying to use ncclient for Python. If I do this it works: from ncclient import manager m = manager.connect() If I do this it fails: import ncclient m = ncclient.manager.connect() The error is AttributeError: 'module' object has no attribute 'manager' . I don't understand what the difference is. Shouldn't that be the same method either way? Why isn't it? 回答1: Importing a module (package) does not automatically import submodule. (Some modules do. For example, importing os module also import

问题 The Abaqus that I run has a pre-installed library (numpy) which has version 1.6.2 This is the only pre-installed module which is present as an "addon" for Abaqus (other than the native Abaqus CAE libraries). I want to be able to run a python script, executed with abaqus cae nogui=makro.py , so that I can have access to scipy as well. I am doing all this in a very strict environment (no moving around of folders at installation directories) I have tried the following: import sys sys.path.insert

问题 Apologies if there does in fact exist a thread that has already figured this out (I've spent a few hours attentively searching multiple sites and the GitHubs for the dependencies that seem to cause the problems), however each solution seemed fairly specific to the particular library that so and so was attempting to use. I've been messing around with quantitative finance/ algorithmic trading and have been trying to import a particular library ffn , however, per the question title, I've been

问题 To start, I've read the answer listed here, as well as tried to follow the instructions listed here, but the instructions were for an outdated or at least for a different version of Intellij, and the preexisting SO answer described the problem, but at least for me did not provide a solution. With that in mind: I'm using IntellijIdea 2017.3 on Windows. I'm trying to create a basic web scraper in Python 3 (I'm very new at this, so I apologize in advance). To accomplish this, I want to use the

问题 I have recently installed scikit-image version 0.11.3. I am using python 2.7.10. When I import the entire module I cannot access the io module. import skimage img = skimage.io.imread(path_) Gives error: AttributeError: 'module' object has no attribute 'io' However the following does not error. from skimage import io img = io.imread(path_) Question: Why? 回答1: Quick answer: IO is a submodule. Submodules need to be imported from the parent module explicitly. Long answer: From section 5.4.2 of

问题 I have recently installed scikit-image version 0.11.3. I am using python 2.7.10. When I import the entire module I cannot access the io module. import skimage img = skimage.io.imread(path_) Gives error: AttributeError: 'module' object has no attribute 'io' However the following does not error. from skimage import io img = io.imread(path_) Question: Why? 回答1: Quick answer: IO is a submodule. Submodules need to be imported from the parent module explicitly. Long answer: From section 5.4.2 of

问题 Notice: I checked for duplicate and nothing clearly answers my question. I trust you'll let me know if I missed something! In an effort to clean up my code, I have been looking for a standard convention for importing SciPy and NumPy in my programs. I know there is no strict guideline and I can do it the way I want, but from time to time, I still find contradictory instructions. For example, I've read somewhere that NumPy is meant to only implement the array object, while SciPy is there for

问题 I'm using PyDev under Eclipse to write some Jython code. I've got numerous instances where I need to do something like this: import com.work.project.component.client.Interface.ISubInterface as ISubInterface The problem is that PyDev will always flag this as an error and say "Unresolved import: ISubInterface". The code works just fine, it's just that I'd rather not have these little white/red X-marks next to my code and have my Problems tab littered with these errors. Is there a way I can add

问题 I have just learnt about importing modules, and I am a bit confused about the wildcard import. from module_name import * I do not understand the reason of using it at all, I see people saying not to use it at all. Could someone clarify what it really means, and why would one use it? 回答1: According to [Python 3.Docs]: Modules - More on Modules ( emphasis is mine): There is even a variant to import all names that a module defines: >>> from fibo import * >>> fib(500) 0 1 1 2 3 5 8 13 21 34 55 89

问题 I'm using Django 1.2 pre-alpha and Python 2.4. Yeah, I know, but I'm stuck with it. We can't upgrade at the moment and I doubt that's the answer anyway. I've got two template tag libraries, foo and bar . However, foo is also the name of a top-level package, and it happens to be the package of bar : foo-1.2.3/ foo/ conf/ settings.py templatetags/ bar.py bar-4.5/ somepackage/ templatetags/ foo.py The tag library bar.py contains a line like this: from foo.conf import settings ...and you would