count characters in string python
>>> sentence = 'Mary had a little lamb'
>>> sentence.count('a')
4count characters in string python
>>> sentence = 'Mary had a little lamb'
>>> sentence.count('a')
4python count characters
# Basic syntax:
import re
len(re.findall('[characters]', your_string))
# Example usage:
# say you want to count all G, g, C, or c characters in the following DNA seq
len(re.findall('[GgCc]', "ACGTGCAcgattcgatCGCTAGCTAG"))
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