Python : Removing duplicates in a string

Question

The task i recieved :

Examples of running the sequence_del function :

>>> sequence_del("ppyyyyythhhhhooonnnnn") 
'python'
>>> sequence_del("SSSSsssshhhh") 
'Ssh'
>>> sequence_del("Heeyyy   yyouuuu!!!") 
'Hey you!'

The code I wrote :

def sequence_del(my_str):  # the function deletes duplicated characters.
    l = []
    for ch in my_str:
        if ch not in l:
            l.append(ch)
    print("".join(l))

For some reason i can't think of a way to cover the 3rd example in the task . Would love some help with it !

@9769953 got it, so the solution is `''.join(k for k,_ in itertools.groupby("Heeyyy yyouuuu!!!"))` — Chris_Rands, Jan 11 '19 at 10:30
@9769953 it's already in the answers (of the linked duplicate) — Chris_Rands, Jan 11 '19 at 10:34

score 1 · Accepted Answer · answered Jan 11 '19 at 10:28

1

try this

def sequence_del(my_str):  # the function deletes duplicated characters.
    l = []
    last=''
    for ch in my_str:
        if last!=ch:
            l.append(ch)
            last = ch

    print("".join(l))

answered Jan 11 '19 at 10:28

nishant

2,526
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This one covers it , thanks a lot ! Is there any chance i can contanct you with another questions ? – Liran Sarel Jan 11 '19 at 10:33
@LiranSarel, SO welcomes you with quality questions. – 0xInfection Jan 11 '19 at 11:00

Python : Removing duplicates in a string

1 Answers1