code: def validate_many(d, schema):
      
      return [validator.to_python(d.get(key), state=key) for key,validator in schema]
docs: Validate a dictionary of data against the provided schema.
  
      Returns a list of values positioned in the same order as given in ``schema``, each
      value is validated with the corresponding validator. Raises formencode.Invalid if
      validation failed.
  
      Similar to get_many but using formencode validation.
  
      :param d: A dictionary of data to read values from.
      :param schema: A list of (key, validator) tuples. The key will be used to fetch
          a value from ``d`` and the validator will be applied to it.
  
      Example::
  
          from formencode import validators
  
          email, password, password_confirm = validate_many(request.params, [
              ('email', validators.Email(not_empty=True)),
              ('password', validators.String(min=4)),
              ('password_confirm', validators.String(min=4)),
          ])