improve rev_comp2

source/_static/code/rev_comp2.py

@@ -5,13 +5,9 @@ def rev_comp(seq):
     return the reverse complement of seq
     the case is respect but if the sequence mix upper and lower case the function will failed
     """
-    upper = seq.isupper()
     reverse = seq[::-1]
-    direct = 'acgt'
-    comp = 'tgca'
-    if upper:
-        table = string.maketrans(direct.upper(), comp.upper())
-    else:
-        table = string.maketrans(direct, comp)
+    direct = 'acgtATCG'
+    comp = 'tgcaTGCA'
+    table = string.maketrans(direct, comp)
     rev_comp = reverse.translate(table)
     return rev_comp
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