# ls=[3,6,4,8,3,9,7]
# n=9
# pos = -1
# for i in range(len(ls)):
#     if ls[i]==n :
#
#         globals()[pos]=i
#         print("Found at :",i)
#         break

#
# def feb(n):
#     a=0
#     b=1
#     if n<=0:
#         print("Enter a value greater than Zero")
#     else:
#         if n==1:
#             print(a)
#         else:
#             print(a)
#             print(b)
#         for i in range(2,n):
#             c=a+b
#             a=b
#             b=c
#             if c>n:
#                 break
#             print(c)
# feb(10)
