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Update Restriction.py

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This commit is contained in:
Manuel Lera-Ramirez
2025-02-19 15:50:18 +00:00
committed by Peter Cock
parent 650d3af421
commit 2149300fea
1 changed files with 3 additions and 1 deletions
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Bio/Restriction/Restriction.py
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@ -119,7 +119,9 @@ DNA = Seq
def _make_FormattedSeq_table() -> bytes:
table = bytearray(256)
upper_to_lower = ord("A") - ord("a")
for c in b"ABCDEFGHIJKLMNOPQRSTUVWXYZ": # Only allow alphabetic characters
# Only allow alphabetic characters
# (although only ACGT are used for finding restriction sites)
for c in b"ABCDEFGHIJKLMNOPQRSTUVWXYZ":
table[c] = c # map uppercase to uppercase
table[c - upper_to_lower] = c # map lowercase to uppercase
return bytes(table)