You've got a stray byte floating around. You can find it by running
with open("x.py") as fp:
for i, line in enumerate(fp):
if "xe2" in line:
print i, repr(line)
where you should replace "x.py"
by the name of your program. You'll see the line number and the offending line(s). For example, after inserting that byte arbitrarily, I got:
4 "xe2 lb = conn.create_load_balancer('my_lb', ['us-east-1a', 'us-east-1b'],[(80, 8080, 'http'), (443, 8443, 'tcp')])
"
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