IndentationError expected an indented block

Here is the code.:

def myfirst_yoursecond(p,q):

a = p.find(" ")
b = q.find(" ")
str_p = p[0:a]
str_q = p[b+1:]

if str_p == str_q:
    result = True
else:
    result = False
return result

Here is the error:

Traceback (most recent call last):
File "vm_main.py", line 26, in <module>
import main
File "/tmp/vmuser_ssgopfskde/main.py", line 22
result = False
^
IndentationError: expected an indented block

What's wrong with my code?