mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-27 23:11:09 +00:00
c909da9b08
* pre-commit: Upgrade psf/black for stable style 2023 Updating https://github.com/psf/black ... updating 22.12.0 -> 23.1.0 for their `2023 stable style`. * https://github.com/psf/black/blob/main/CHANGES.md#2310 > This is the first [psf/black] release of 2023, and following our stability policy, it comes with a number of improvements to our stable style… Also, add https://github.com/tox-dev/pyproject-fmt and https://github.com/abravalheri/validate-pyproject to pre-commit. I only modified `.pre-commit-config.yaml` and all other files were modified by pre-commit.ci and psf/black. * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
31 lines
555 B
Python
31 lines
555 B
Python
import re
|
|
|
|
|
|
def dna(dna: str) -> str:
|
|
"""
|
|
https://en.wikipedia.org/wiki/DNA
|
|
Returns the second side of a DNA strand
|
|
|
|
>>> dna("GCTA")
|
|
'CGAT'
|
|
>>> dna("ATGC")
|
|
'TACG'
|
|
>>> dna("CTGA")
|
|
'GACT'
|
|
>>> dna("GFGG")
|
|
Traceback (most recent call last):
|
|
...
|
|
ValueError: Invalid Strand
|
|
"""
|
|
|
|
if len(re.findall("[ATCG]", dna)) != len(dna):
|
|
raise ValueError("Invalid Strand")
|
|
|
|
return dna.translate(dna.maketrans("ATCG", "TAGC"))
|
|
|
|
|
|
if __name__ == "__main__":
|
|
import doctest
|
|
|
|
doctest.testmod()
|