Regular Expression
Character types
\w matches with any alphanumeric character-
. matches to all characters, including symbols
-
\d matches to all single digits [0-9]
-
\s matches to all single spaces
-
\. matches to the period character
import re
re.findall("\w", "h32rb17")
import re
re.findall("\d", "h32rb17")
Quantify occurrences
+ symbol represents one or more occurrences of a specific character.* symbol represents zero, one, or more occurrences of a specific character.
import re
re.findall("\d+", "h32rb17")
import re
re.findall("\d*", "h32rb17")
import re
re.findall("\d{2}", "h32rb17 k825t0m c2994eh")
import re
re.findall("\d{1,3}", "h32rb17 k825t0m c2994eh")
