def unique_in_order(iterable):
x = []
[x.append(item) for item in iterable ]
k = []
i = 0
while i < len(x)-1:
if x[i+1] != x[i]:
k.append(x[i])
i +=1
print(k)
return k
unique_in_order('AAAABBBCCDAABBB')
ZGVmIHVuaXF1ZV9pbl9vcmRlcihpdGVyYWJsZSk6CiAgICB4ID0gW10KICAgIFt4LmFwcGVuZChpdGVtKSBmb3IgaXRlbSBpbiBpdGVyYWJsZSBdCiAgICBrID0gW10KICAgIGkgPSAwCiAgICB3aGlsZSBpIDwgbGVuKHgpLTE6CiAgICAgICAgaWYgeFtpKzFdICE9IHhbaV06CiAgICAgICAgICAgIGsuYXBwZW5kKHhbaV0pCiAgICAgICAgaSArPTEKICAgIHByaW50KGspCiAJcmV0dXJuIGsKIAp1bmlxdWVfaW5fb3JkZXIoJ0FBQUFCQkJDQ0RBQUJCQicpIAogCiAKIA==
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib/python2.7/py_compile.py", line 117, in compile
raise py_exc
py_compile.PyCompileError: Sorry: IndentationError: unexpected indent (prog.py, line 11)