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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 safe_mkdir(self, d):
 """If a directory doesn't exist, create it. If it does exist, print a warning to the logger. If it exists as a file, rais a FileExistsError :param d: directory path to create :type d: str """


        if os.path.isfile(d):
            raise FileExistsError(
                "Cannont create directory %s, a file by that name already exists." % d)

        if os.path.isdir(d):
            logger.warning("%s already exists, using existing directory.", d)
            return

        os.makedirs(d)