twitter_utils.py 文件源码

def enf_type(field, _type, val):
    """ Checks to see if a given val for a field (i.e., the name of the field)
    is of the proper _type. If it is not, raises a TwitterError with a brief
    explanation.

    Args:
        field:
            Name of the field you are checking.
        _type:
            Type that the value should be returned as.
        val:
            Value to convert to _type.

    Returns:
        val converted to type _type.

    """
    try:
        return _type(val)
    except ValueError:
        raise TwitterError({
            'message': '"{0}" must be type {1}'.format(field, _type.__name__)
        })