Question

After running code from my previous question, I get a result set from my subprocess that looks like this:

[[(<PyTime:6/10/2012 3:24:17 AM>, 1593.5, 413.0, 19.600000381469727, 430.0, 16.0, 47.0, 42.70000076293945, 15.600000381469727, 69.5), 
(<PyTime:6/10/2012 3:24:18 AM>, 1658.0, 412.0, 19.600000381469727, 429.0, 7.0, 34.400001525878906, 30.899999618530273, 15.699999809265137, 69.5), 
(<PyTime:6/10/2012 3:24:19 AM>, 1685.0, 406.0, 19.600000381469727, 425.0, 18.0, 28.700000762939453, 26.399999618530273, 15.699999809265137, 69.5)]]

When I attempt to send this from my subprocess to my parent process, I do this, where cu equals the above.

conn.send(pickle.dumps(cu))

This results in the following error: TypeError: can't pickle time objects

What is a work around to send the above list back to the parent process?

Answer 1

As the other answers said, PyTime objects aren’t “pickleable”. I would suggest converting them to regular datetime objects, which can be pickle:

from datetime import datetime

list_of_pytimes = [ ... ]
list_of_datetimes = [datetime.fromtimestamp(int(pytime)) for pytime in list_of_pytimes]
# Now this will work
pickle.dumps(list_of_datetimes)