dump.py

import pickle

# Simple generator that counts up to maximum, but you can set the counter by
# sending in new values.
def counter(maximum):
    i = 0
    while i < maximum:
        val = (yield i)
        # If value provided, change counter
        if val is not None:
            i = val
        else:
            i += 1

it = counter(10)

print "First:", it.next()
# First: 0

it.send(4)
print "After inserting 4:", it.next()
# After inserting 4: 5

# Serialize the generator.
f = open("_dumped", "w")
f.write(pickle.dumps(it))
f.close()

load.py

import pickle

# Deserialize the generator.
f = open("_dumped", "r")
it = pickle.loads(f.read())
f.close()

print "After serialization:"
for x in it:
    print x
# After serialization:
# 6
# 7
# 8
# 9