Viewer for arbitrary pickle files

pickleViewer.py

#!/usr/bin/python

import pickle
from collections import defaultdict
from collections import OrderedDict
import sys

def checkDict(inputData):
    return (type(inputData) == dict or type(inputData) == defaultdict\
            or type(inputData) == OrderedDict)
def checkList(inputData):
    return  type(inputData) == list

def recursivePrint(inputData,extraTuple = ()):
    if checkDict(inputData):
        for extraInfo,data in inputData.items():
            recursivePrint(data,(extraInfo,)+extraTuple)
    elif checkList(inputData):
        if all([not(checkList(x) or checkDict(x)) for x in inputData]):
            print (" ".join([str(x) for x in extraTuple][::-1]),inputData)
        else:
            for data in inputData:
                recursivePrint(data,extraTuple)
    else:
        print (" ".join([str(x) for x in extraTuple][::-1]),inputData)
def pickleViewer(inputFile):
    inputData = pickle.load(open(inputFile,'rb'))
    print ("Viewing pickle file {0} which contains data of type {1}".format(inputFile,type(inputData)))
    recursivePrint(inputData)

if __name__ =="__main__":
    assert len(sys.argv) == 2, "Usage: pickleViewer <input.pkl>"
pickleViewer(sys.argv[1])

I honestly just dumped this here for myself but it's now updated to fix bugs and work in Py3