Python 3: An interactive deep dive/

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Finding all occurrences of a pattern

Finding all occurrences of a pattern

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The first thing this alphametics solver does is find all the letters (A–Z) in the puzzle.

Python 3.5
import re
print (re.findall('[0-9]+', '16 2-by-4s in rows of 8'))  #①
#['16', '2', '4', '8']
print (re.findall('[A-Z]+', 'SEND + MORE == MONEY'))     #②
#['SEND', 'MORE', 'MONEY']

① The re module is Python’s implementation of regular expressions. It has a nifty function called findall() which takes a regular expression pattern and a string, and finds all occurrences of ...