[Tutor] sorted function

[shubham goyal]

Dear mentors,
sorted function is not working when i am trying to sort the list of strings
but list.sort() is working. can you please help me understand.In this
question i was trying to sort the list but first sorting the letter
starting from x and taking them first.

def front_x(words):
  # +++your code here+++
  ls=[]
  ls1=[]
  for str in words:
      if str[0]=='x':
          ls.append(str)
      else:
          ls1.append(str);
  print ls
  print ls1
  sorted(ls)
  sorted(ls1)
  ls.extend(ls1)
  return ls

front_x(['bbb', 'ccc', 'axx', 'xzz', 'xaa'])

Output:['xzz', 'xaa', 'bbb', 'ccc', 'axx']
Output should be:  ['xaa', 'xzz', 'axx', 'bbb', 'ccc']

Thankyou. Sorry for bad writing skills.