DNA.
index
(subsequence, start=None, end=None)[source]¶Find position where subsequence first occurs in the sequence.
State: Stable as of 0.4.0.
subsequence (str, Sequence, or 1D np.ndarray (np.uint8 or '|S1')) – Subsequence to search for in this sequence.
start (int, optional) – The position at which to start searching (inclusive).
end (int, optional) – The position at which to stop searching (exclusive).
Position where subsequence first occurs in this sequence.
int
ValueError – If subsequence is not present in this sequence.
TypeError – If subsequence is a Sequence
object with a different type
than this sequence.
Examples
>>> from skbio import Sequence
>>> s = Sequence('ACACGACGTT-')
>>> s.index('ACG')
2