[Tutor] Finding the version # of a module, and py module problem
benjamin.kaplan at case.edu
Fri Aug 6 21:28:39 CEST 2010
On Fri, Aug 6, 2010 at 12:14 PM, W. eWatson <wolftracks at invalid.com> wrote:
> I must be missing something. I tried this. (Windows, IDLE, Python 2.5)
> # Try each module
> import sys
> import numpy
> import scipy
> import string
> dependencies = "numyp", "scipy"
> for dependency in dependencies:
> except ImportError:
> # Uh oh!
> dependency.installed = None
> # The module loaded OK. Get a handle to it and try to extract
> # version info.
> # Many Python modules follow the convention of providing their
> # version as a string in a __version__ attribute.
> module = sys.modules[dependency.name]
> # This is what I default to.
> dependency.installed = "[version unknown]"
> for attribute_name in ("__version__", "__VERSION__", "VERSION",
> if hasattr(module, attribute_name):
> dependency.installed = getattr(module, attribute_name)
> The result was this.
> Traceback (most recent call last):
> File "C:/Users/Wayne/Sandia_Meteors/Trajectory_Estimation/dependency_code",
> line 10, in <module>
> AttributeError: 'str' object has no attribute 'name'
Try reading the code, not just copying and pasting. dependencies isn't
supposed to be a list of strings. It's a list of objects (at least) a
name and an installed attribute.
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