>>> import pickle
>>> data = (1.4,42)
>>> output = open('data.pkl', 'bw') # Python3
>>> #output = open('data.pkl', 'w') # Python2
>>> pickle.dump(data, output)
>>> output.close()
The content of the file data.pkl looks like this in Python2:
(F1.3999999999999999
I42
tp0
.
Not readable in Python3 per Default!