As you (implicitly) acknowledged, you are not required to declare the name of a package in the case of the default package. Let us put that quibble aside … The reason for this seeming redundancy is that without a package declaration, the meaning of Java1 source code would be ambiguous. For example, a source file … Read more
It looks like the numexpr package has an install-time dependency on numpy. Pip makes two passes through your requirements: first it downloads all packages and runs each one’s setup.py to get its metadata, and then it installs them all in a second pass. So, numexpr is trying to import from numpy in its setup.py, but … Read more
It works, but only you the children tries to access it own variable, not variable of other instance ( even if it belongs to the same inheritance tree ). See this sample code to understand it better: //in Parent.java package parentpackage; public class Parent { protected String parentVariable = “whatever”;// define protected variable } // … Read more
The executable binaries and .cmd files end up in C:\Users\<username>\AppData\Roaming\npm (minus the node_modules at the end) so adding that path to the PATH env. variable fixed the issue. With environment variables, the path can be abbreviated: %appdata\npm.
Namespace packages As of Python 3.3, we get namespace packages. These are a special kind of package that allows you to unify two packages with the same name at different points on your Python-path. For example, consider path1 and path2 as separate entries on your Python-path: path1 +–namespace +–module1.py +–module2.py path2 +–namespace +–module3.py +–module4.py with … Read more
You can just use pip for installing packages, even when you are using anaconda: pip install -U scikit-learn scipy matplotlib This should work for installing the package. And for Python 3.x just use pip3: pip3 install -U scikit-learn scipy matplotlib
Actually, you can import a module with an invalid name. But you’ll need to use imp for that, e.g. assuming file is named models.admin.py, you could do import imp with open(‘models.admin.py’, ‘rb’) as fp: models_admin = imp.load_module( ‘models_admin’, fp, ‘models.admin.py’, (‘.py’, ‘rb’, imp.PY_SOURCE) ) But read the docs on imp.find_module and imp.load_module before you start … Read more
Any Python file is a module, its name being the file’s base name without the .py extension. A package is a collection of Python modules: while a module is a single Python file, a package is a directory of Python modules containing an additional __init__.py file, to distinguish a package from a directory that just … Read more