"""
package model for python PAckage INTrospection
"""

import tempfile

class Package(object):

    def __init__(self, src):
        self.src = src
        self._tmppath = None

    def path(self):
        """filesystem path to package"""
        if utils.isURL(self.src):
            if self._tmppath:
                return self._tmppath
            self.fetch()
            return self._tmppath
        return self.src

    def fetch(self):
        """fetch from remote source"""
        self._tmppath = tempfile.mkdtemp()
        raise NotImplementedError