Im getting errors in my program Can someone help me out pyt

Im getting errors in my program. Can someone help me out?
# python code

import sys, traceback

def get_gravitational_force (mass1, mass2, dist):
   force = 6.673*pow(10,-8)*mass1*mass2/(dist*dist)
   return force

mass1 = raw_input(\"Enter mass 1: \")
if mass1.count(\".\") != 1:
   print \"Invalid Input!!\"
   sys.exit(0)
else:
   mass1 = float(mass1)
mass2 = raw_input(\"Enter mass 2: \")
if mass2.count(\".\") != 1:
   print \"Invalid Input!!\"
   sys.exit(0)
else:
   mass2 = float(mass2)
dist = raw_input(\"Enter dist: \")
if dist.count(\".\") != 1:
   print \"Invalid Input!!\"
   sys.exit(0)
else:
   dist = float(dist)

print get_gravitational_force(mass1,mass2,dist)

Solution

import sys, traceback
def get_gravitational_force (mass1, mass2, dist):
force = 6.673*pow(10,-11)*mass1*mass2/(dist*dist)
return force

mass1 = raw_input(\"Enter mass 1: \")
if mass1.count(\".\") != 1:
print \"Invalid Input!!\"
sys.exit(0)
else:
mass1 = float(mass1)
mass2 = raw_input(\"Enter mass 2: \")
if mass2.count(\".\") != 1:
print \"Invalid Input!!\"
sys.exit(0)
else:
mass2 = float(mass2)
dist = raw_input(\"Enter dist: \")
if dist.count(\".\") != 1:
print \"Invalid Input!!\"
sys.exit(0)
else:
dist = float(dist)
print get_gravitational_force(mass1,mass2,dist)

\"\"\"
Its working fine.
Specify the error

sample output.
Enter mass 1: 5.0
Enter mass 2: 6.0
Enter dist: 5.0
8.0076e-11
\"\"\"