In Python, how do I take a list and reduce it to a list of duplicates?

In Python, how do I take a list and reduce it to a list of duplicates?



1.How do you remove duplicates from a list in Python whilst ...

Description:I think if you wanna maintain the order, you can try this:
list1 = ['b','c','d','b','c','a','a'] list2 = list(set(list1))
list2.sort(key=list1.index) print list2



2.Making a flat list out of list of lists in Python - Stack ...

Description:Possible Duplicates: Flattening a shallow list in Python
Comprehension for flattening a sequence of sequences? I wonder whether
there is a shortcut to make a ...



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Description:My program is too slow. How do I speed it up? ¶ That's a tough
one, in general. There are many tricks to speed up Python code; consider
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Description:Chapter 1 Beginning With Python 1.1. Context. You have
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Description:The main Python implementation, named CPython, is written in C
meeting the C89 standard. It compiles Python programs into intermediate
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6.5. Built-in Types — Python v2.7.6 documentation

Description:Notes:!= can also be written <>, but this is an obsolete usage
kept for backwards compatibility only. New code should always use !=.
Objects of different types ...



7.Download Python | Python.org

Description:The original implementation of Python, written in C.



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Description:Monty Python's The Meaning of Life, also known as The Meaning
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Description:With Graham Chapman, Eric Idle, Terry Jones, Michael Palin.
The irreverent Monty Python comedy troupe present a series of skits which
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Description:"If only I could resist the ice cream in the freezer, I would
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