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  1. import re
  2. rx = r"s[4-9]\d*"
  3. text = "s000000000 s1133122 s21 s3 s4 s5212638476234857634 s6 s7 s8 s9000"
  4. print( re.findall(rx, text) )
Success #stdin #stdout 0.02s 9316KB
stdin
Standard input is empty
stdout
['s4', 's5212638476234857634', 's6', 's7', 's8', 's9000']