How to join two generators (or other iterables) in Python?

itertools.chain() should do it. It takes multiple iterables and yields from each one by one, roughly equivalent to:

def chain(*iterables):
    for it in iterables:
        for element in it:
            yield element

Usage example:

from itertools import chain

g = (c for c in 'ABC')  # Dummy generator, just for example
c = chain(g, 'DEF')  # Chain the generator and a string
for item in c:
    print(item)

Output:

A
B
C
D
E
F