34465A returns u'\n' on "READ?" using pyvisa

I'm using PyVISA on python 2.7 to read a 34465A DMM over TCP.  I am able to execute an "*IDN?" query and it returns the correct value, however the "READ?" query simply returns u'\n'.  I've tried several variations including using '' vs "", as well as having preceding ':', using "MEAS:..."; no luck. Here is an example of my code:

import visa
import time

rm = visa.ResourceManager()
resources = rm.list_resources()
print "Available resources:"
print resources
print "Getting instrument..."
my_inst = rm.open_resource(resources[1]) # The device is always at [1]
start = time.time()
worked = True
command = "MEAS:VOLT:DC?" # Doesn't work

#command = "READ?" # Doesn't work
try:
    print "Got instrument, getting *IDN?..."
    print my_inst.query('*IDN?') # Prints correct value
    print "Got *IDN?, READ?ing..."
    print my_inst.query(command).split()
    print "READ? complete attempting, write/read."
    print my_inst.write(command)
    print "Wrote READ?, reading from inst..."
    print my_inst.read().split()
except Exception as e:
    worked = False
    print e
    print "Had an... exceptional time...."
finally:
    my_inst.close()
    print "Elapsed time:"
    print time.time() - start
    print "Did it work: {}".format(worked)