dq_helper.py 文件源码

def to_str(val, **kwargs):
    """Convert input to string

    :param val: value to be converted
    :returns: converted value
    :rtype: str
    """

    try:
        if pd.isnull(val):
            return kwargs['nan']
    except BaseException:
        pass
    if isinstance(val, str):
        return val
    if kwargs.get('convert_inconsistent_dtypes', True):
        if hasattr(val, '__str__'):
            return str(val)
    return kwargs['nan']