code: def revoke_privilege(database, privilege, username, **client_args):
      '''
      Revoke a privilege on a database from a user.
  
      database
          Name of the database to grant the privilege on.
  
      privilege
          Privilege to grant. Can be one of 'read', 'write' or 'all'.
  
      username
          Name of the user to grant the privilege to.
      '''
      client = _client(**client_args)
      client.revoke_privilege(privilege, database, username)
  
      return Truf revoke_privilege(database, privilege, username, **client_args):
      '''
      Revoke a privilege on a database from a user.
  
      database
          Name of the database to grant the privilege on.
  
      privilege
          Privilege to grant. Can be one of 'read', 'write' or 'all'.
  
      username
          Name of the user to grant the privilege to.
      '''
      client = _client(**client_args)
      client.revoke_privilege(privilege, database, username)
  
      return True
docs: Revoke a privilege on a database from a user.
  
      database
          Name of the database to grant the privilege on.
  
      privilege
          Privilege to grant. Can be one of 'read', 'write' or 'all'.
  
      username
          Name of the user to grant the privilege to.