19 lines
383 B
Python
19 lines
383 B
Python
NUCLEOTIDES = 'ATCG'
|
|
|
|
|
|
def count(strand, abbreviation):
|
|
_validate(abbreviation)
|
|
return strand.count(abbreviation)
|
|
|
|
|
|
def nucleotide_counts(strand):
|
|
return {
|
|
abbr: strand.count(abbr)
|
|
for abbr in NUCLEOTIDES
|
|
}
|
|
|
|
|
|
def _validate(abbreviation):
|
|
if abbreviation not in NUCLEOTIDES:
|
|
raise ValueError('{} is not a nucleotide.'.format(abbreviation))
|