Basic error in python


I have created this script, but it gives the following error:

print (choice 1-Option 1  n2-Option 2  n3-Option 3)


if choose == 1:
print (The account is 5 + 5 & # 39;)
elif choose ==> 2 & # 39 ;:
print (& # 39; The account is 6 + 6 & # 39;)
elif choose == & # 39; 3 & # 39 ;:
print (& # 39; The account is 7 + 9 & # 39;)


if not:
print ('You do not choose any options')    

Fault:

Traceback (last most recent call):
File "main.py", line 11, in 
 if choice == 1:
NameError: the name & # 39; choice & # 39; is not defined

Can someone tell me what's wrong? In recent days, the program is running normally? By the way, I've already rolled into python, pycharm and ide online, and nothing works