cb8bbd9745
Update formatting in every_nth Update formatting in shuffle Update formatting in has_duplicates Update formatting in group_by Update formatting in sum_by Update formatting in zip Update formatting in longest_item Update formatting in bifurcate_by Update formatting in difference_by Update formatting in clamp_number Update formatting in min_by Update formatting in max_by Update formatting in union Update formatting in n_times_string Update formatting in check_prop Update formatting in chunk Update formatting in transpose Update formatting in bifurcate Update formatting in union_by Update formatting in initialize_list_with_range Update formatting in most_frequent
25 lines
611 B
Markdown
25 lines
611 B
Markdown
---
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title: bifurcate_by
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tags: list,function,intermediate
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---
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Splits values into two groups according to a function, which specifies which group an element in the input list belongs to.
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If the function returns `True`, the element belongs to the first group; otherwise, it belongs to the second group.
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Use list comprehension to add elements to groups, based on `fn`.
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```py
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def bifurcate_by(lst, fn):
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return [
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[x for x in lst if fn(x)],
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[x for x in lst if not fn(x)]
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]
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```
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```py
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bifurcate_by(
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['beep', 'boop', 'foo', 'bar'],
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lambda x: x[0] == 'b'
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) # [ ['beep', 'boop', 'bar'], ['foo'] ]
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```
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