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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_param_doc(doc, param):
 """Get the documentation and datatype for a parameter This function returns the documentation and the argument for a napoleon like structured docstring `doc` Parameters doc: str The base docstring to use param: str The argument to use Returns ------- str The documentation of the given `param` str The datatype of the given `param`"""

        arg_doc = docstrings.keep_params_s(doc, [param]) or \
            docstrings.keep_types_s(doc, [param])
        dtype = None
        if arg_doc:
            lines = arg_doc.splitlines()
            arg_doc = dedents('\n' + '\n'.join(lines[1:]))
            param_desc = lines[0].split(':', 1)
            if len(param_desc) > 1:
                dtype = param_desc[1].strip()
        return arg_doc, dtype