count = len(string) // k

for i in range(count):
    sub_s = ""
    for j in range(i*k,(i+1)*k):
        if string[j] not in sub_s:
            sub_s+=string[j]
            print(string[j],end="")
    print()

1. import textwrap
2. 3. def merge_the_tools(string, k):
3. if(len(string)%k==0):
4. t_string = textwrap.wrap(string,k)
5. u_string=[]
6. for i in t_string:
7. s=""
8. for j in i:
9. if(j not in s):
10. s=s+j

11. u_string.append(s)

    print("\n".join(u_string))  
    

It is a little lengthy but worked for me

def merge_the_tools(string, k): # your code goes here st = string sub_string_list = [] for i in range(int(len(st)/k)): sub_string = "" count = i for j in range(k): sub_string += st[count*k + j] sub_string_list.append(sub_string)

for i in range(len(sub_string_list)):
    string_dict = {}
    formatted_str = ""
    for j in range(k):
        if sub_string_list[i][j] not in string_dict:
            formatted_str += sub_string_list[i][j]
            string_dict[sub_string_list[i][j]] = 1
    sub_string_list[i] = formatted_str
for i in sub_string_list:
    print(i)

code

def merge_the_tools(string, k): text = "" for i in string: text += "".join(i) if len(text) == k: for i in range(len(text)): s = "".join(sorted(set(text), key=text.index)) print(s) text = ""