A convenience function, returns bool if <str_path> is
            a "file" in the tree space

def isfile(self, str_path):
            """
            A convenience function, returns bool if <str_path> is
            a "file" in the tree space
            """

            b_isFile            = False
            if self.isdir(str_path):
                b_isFile        = False
            else:
                str_parentDir   = '/'.join(str_path.split('/')[0:-1])
                str_fileName    = str_path.split('/')[-1]
                if self.cd(str_parentDir)['status']:
                    l_files = self.lsf(str_parentDir)
                    if any(str_fileName in f for f in l_files):
                        b_isFile    = True
            return b_isFile