import
threading
from
time
import
sleep
def
one
(
)
:
while
True
:
print
'ello'
sleep
(
2
)
def
two
(
)
:
while
True
:
raw_input
(
)
t1
=
threading
.
Thread
(
target
=
one
)
t2
=
threading
.
Thread
(
target
=
two
)
t1.
start
(
)
t2.
start
(
)
t1.
join
(
)
t2.
join
(
)