anaconda/conda - install a specific package version

To install a specific package:

conda install <pkg>=<version>

eg:

conda install matplotlib=1.4.3

For more complex expressions, the relation can be quoted:

conda install 'matplotlib>=1.4.3'

# or

conda install "matplotlib>=1.4.3"

There is no version 1.3.0 for rope. 1.3.0 refers to the package cached-property. The highest available version of rope is 0.9.4.

You can install different versions with conda install package=version. But in this case there is only one version of rope so you don't need that.

The reason you see the cached-property in this listing is because it contains the string "rope": "cached-p rope erty"

py35_0 means that you need python version 3.5 for this specific version. If you only have python3.4 and the package is only for version 3.5 you cannot install it with conda.

I am not quite sure on the defaults either. It should be an indication that this package is inside the default conda channel.