Invalid syntax 3.6.2 with 6 highlighted

[snippsat]

Use code tag,read BBCode help.
Here is code without(>>>) which shall only be there if do interactive testing.
>>> shall not be there when writing longer code.
Also fixed error in code.

import random

# write answers
ans1 = "go for it!"
ans2 = "No way, sir"
ans3 = "Not sure. Ask again."
ans4 = "Fear of the unknown."
ans5 = "It would be madness to do that."
ans6 = "Only You can save mankind."
ans7 = "Makes no difference to me."
ans8 = "That's the right choice."

print("Welcome to my magic 8 ball.")
question = input("ask me for advice then press RETURN to shake me. \n")
print("shaking... \n" * 4)
choice = random.randint(1, 8)
if choice == 1:
    answer = ans1
elif choice == 2:
    answer = ans2
elif choice == 3:
    answer = ans3
elif choice == 4:
    answer = ans4
elif choice == 5:
    answer = ans5
elif choice == 6:
    answer = ans6
elif choice == 7:
    answer = ans7
else:
    answer = ans8
print(answer)
input("\n\nPress the RETURN key to finish.") 

Output:
E:\1
λ python ans.py
Welcome to my magic 8 ball.
ask me for advice then press RETURN to shake me.

shaking...
shaking...
shaking...
shaking...

go for it!


Press the RETURN key to finish.

So it work,if you shall use code in IDLE look at image.
Copy this code and open File --> New File window(paste in code and save it as eg ans.py)
Now you can run code it with Run -- Run Module(F5).