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import re
my_str = 'my example example string contains example some text'
my_str = re.sub(r'\b(example)(?:\s+\1)+\b', r'\1', my_str)
print(my_str)

Success #stdin #stdout 0s 23352KB

stdin

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Standard input is empty

stdout

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my example string contains example some text

https://ideone.com/i0bi3T

language:

Python (cpython 2.7.16)

created:

visibility:

public

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