Answers for "python replace repeated characters with one character"

Python program to remove duplicate characters of a given string.

>>> foo = 'mppmt'
>>> ''.join(sorted(set(foo), key=foo.index))
'mpt'

count repeated characters in a string python

# Python 3+
import collections
collections.Counter(input_string)

# Python 2 or custom results.
{key: string.count(key) for key in set(string)}

# Other ways are too slow. In the source, You can see the proves.