code: def find_packages():
      
      packages = ['mdtraj.scripts']
      for dir,subdirs,files in os.walk('MDTraj'):
          package = dir.replace(os.path.sep, '.')
          if '__init__.py' not in files:
              # not a package
              continue
          packages.append(package.replace('MDTraj', 'mdtraj'))
      return packages
docs: Find all of mdtraj's python packages.
      Adapted from IPython's setupbase.py. Copyright IPython
      contributors, licensed under the BSD license.