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* ci: Add `B023` to `.flake8` ignores * refactor: Return `bool`/raise Exception * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * revert: Remove previous branch commit * Update data_structures/binary_tree/segment_tree_other.py Co-authored-by: Christian Clauss <cclauss@me.com> * feat: Apply `__repr__` changes * chore: Fix failing tests * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * Update data_structures/binary_tree/segment_tree_other.py Co-authored-by: Christian Clauss <cclauss@me.com> * test: Fix doctests * random.choice(population_score[:N_SELECTED])[0] * Update basic_string.py Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Christian Clauss <cclauss@me.com>
32 lines
556 B
Python
32 lines
556 B
Python
import re
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def dna(dna: str) -> str:
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"""
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https://en.wikipedia.org/wiki/DNA
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Returns the second side of a DNA strand
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>>> dna("GCTA")
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'CGAT'
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>>> dna("ATGC")
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'TACG'
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>>> dna("CTGA")
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'GACT'
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>>> dna("GFGG")
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Traceback (most recent call last):
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...
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ValueError: Invalid Strand
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"""
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if len(re.findall("[ATCG]", dna)) != len(dna):
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raise ValueError("Invalid Strand")
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return dna.translate(dna.maketrans("ATCG", "TAGC"))
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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