I am learning regex using Python and am a little confused by this tutorial I am following. Here is the example:
rand_str_2 = "doctor doctors doctor's" # Match doctor doctors or doctor's regex = re.compile("[doctor]+['s]*") matches = re.findall(regex, rand_str_2) print("Matches :", len(matches))
I get 3 matches
When I do the same thing but replace the * with a ? I still get three matches
regex = re.compile("[doctor]+['s]?")
When I look into the documentation I see that the * finds 0 or more and ? finds 0 or 1
My understanding of this is that it would not return “3 matches” because it is only looking for 0 or 1.
Can someone offer a better understanding of what I should expect out of these two Quantifiers?
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