pkgutil.iter_modules(path=None, prefix='')
Yields (module_finder, name, ispkg) for all submodules on path, or, if path is None, all top-level modules on sys.path.
path should be either None or a list of paths to look for modules in.
prefix is a string to output on the front of every module name on output.
Note
Only works for a finder which defines an iter_modules() method. This interface is non-standard, so the module also provides implementations for importlib.machinery.FileFinder and zipimport.zipimporter.
Changed in version 3.3: Updated to be based directly on importlib rather than relying on the package internal PEP 302 import emulation.
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