How to Eliminate Duplicate Characters from Strings in Python?

Eliminating Duplicate Characters from Strings: Python Implementation

The task at hand is to remove redundant characters from a string while disregarding their order. To accomplish this, a variety of approaches are available in Python.

One straightforward method utilizes the set() function, which creates a collection of distinct elements from the input string:

"".join(set(foo))

In this case, the "".join() function converts the set of unique characters back into a string, arranging them in an unspecified order.

Alternatively, if the order of characters is crucial, dictionaries can be employed instead of sets:

result = "".join(dict.fromkeys(foo))

In Python 3.7 and above, dictionaries maintain the sequence in which keys are added. As a result, the resulting string retains the order of the original characters. For earlier Python versions, collections.OrderedDict can be employed, as it preserves key order from Python 2.7 onwards.

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