search sample

 d = [3,5,10,1,7,9,8,6,4,2]

print(d.index(9))

d = 'abcdefg'

print(d.find('e'))

print(d.index('e'))

d = 'tomorrow will be better'

f = 'r'

for i in range(len(d)):

  if d[i] == f:print(i,':',d[i])