Source code for envisage.i_import_manager

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""" The interface for import managers. """


# Enthought library imports.
from traits.api import Interface


[docs]class IImportManager(Interface): """The interface for import managers."""
[docs] def import_symbol(self, symbol_path): """Import the symbol defined by the specified symbol path. 'symbol_path' is a string containing the path to a symbol through the Python package namespace. It can be in one of two forms: 1) 'foo.bar.baz' Which is turned into the equivalent of an import statement that looks like:: from foo.bar import baz With the value of 'baz' being returned. 2) 'foo.bar:baz' (i.e. a ':' separating the module from the symbol) Which is turned into the equivalent of:: from foo import bar eval('baz', bar.__dict__) With the result of the 'eval' being returned. The second form is recommended as it allows for nested symbols to be retreived, e.g. the symbol path 'foo.bar:baz.bling' becomes:: from foo import bar eval('baz.bling', bar.__dict__) The first form is retained for backwards compatability. """