Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
Processing...

Test String

Code Generator

Language

Generated Code

import re regex = re.compile(r"^(.*part).*(POLYPROPYLENE\sHOMOPOLYMER)", flags=re.IGNORECASE) test_str = " (CRE8 RXN LIGHT R) (CRE8 RXN WHITE ME) (MOUTHFEEL CREAM FLAVOR) .. 1 CATERPILLAR TRACTOR PARTS 1 NYLOK NUTS, TREE CLIP, 1 PLASTIC TUBING 1 POLYPROPYLENE HOMOPOLYMER 1 SLAC: ABRASIVE MATERIAL 1 STC: INDIAN TAN LACE BACKS 11 SHIPPER'S LOAD AND COUNT 2 AUTO PARTS 29 PLYWOOD & HANGING BAR 4 SACK PAPER US05 18 INCH 5 SLAC: ABRASIVE MATERIAL 5 SLAC:13 SACK PAPER US05 18 61 SACK PAPER US05 20 INCH 7 AUTO PARTS 8544.20 AES X20160114804751 AES X20160114821615 AES X20160121191181 AES X20160122257543 AES X20160122274102 AES X20160126421765 AES X20160126421789 AES X20160127481907 AES X20160127508512 CASES COMMODITY CODE : AES X20160 CONTAINER GLOVES HS CODE 4821.90 8517.70 HS CODE: 3917.32.0000 HS CODE: 7318.16.0000 HS CODE: 8412.21 INVOICE NO: 358672 MSO NO: 3579782 NOEEI 30.37(A) NON-HAZ PACKAGE MATERIALS FOR BASEBALL PACKAGES 1 X 40HQ SHIPPER OWNED PALLET PALLET CYLINDER PALLET SLAC 17 BOXES ON 1 PLT PALLET TAPE PALLETS AES X20160114844193 PALLETS HS CODE:7907.00 PALLETS INCH USNU PO# 4550051601 SKIDS HS CODE: 8708.29 SLAC 58 BOXES ON 1 PLT TELECOM EQUIPMENT USNU" matches = regex.finditer(test_str) for match_num, match in enumerate(matches, start=1): print(f"Match {match_num} was found at {match.start()}-{match.end()}: {match.group()}") for group_num, group in enumerate(match.groups(), start=1): print(f"Group {group_num} found at {match.start(group_num)}-{match.end(group_num)}: {group}")

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Python, please visit: https://docs.python.org/3/library/re.html