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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 __replace_coord_variables(text, x_and_y, req_len, idx):
 """ Replace x and y with their coordinates and replace pi with value of pi. :param text: text: base text to modify :param x_and_y: location x and y :param req_len: amount of required resources :param idx: index of resource we are working on :return: str """

        return ResourceConfig.__replace_base_variables(text, req_len, idx) \
            .replace("{xy}", str(x_and_y)) \
            .replace("{pi}", str(math.pi))