code: def op_install_package(self, names):
          
          venvs = self.get_venvs()
          for venv in venvs:
              for name in names:
                  self.venv_install(name, self._get_venv_path(venv))
docs: Install packages into virtual envs as to satisfy app requirements.
  
          Exact version numbers could be given as in PIP: somedep==1.5
  
          :param list names: