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y56/List of all unique characters in a string

Created February 2, 2020 22:54
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List of all unique characters in a string?
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List of all unique characters in a string
https://stackoverflow.com/questions/13902805/list-of-all-unique-characters-in-a-string
```
In [10]: ''.join(set('aaabcabccd'))
Out[10]: 'acbd'
```
```
In [1]: list(set('aaabcabccd'))
Out[1]: ['a', 'c', 'b', 'd']
```
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