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
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

# coding=utf8 # the above tag defines encoding for this document and is for Python 2.x compatibility import re regex = r".{5}-.{5}-.{5}" test_str = ("45Y43-04T52-JDLH2\n" "8YZIH-2QKFB-3KFFQ\n" "44P78-J74GI-4L9AF\n" "BTHGF-WL500-C0R4V\n" "6RM9G-N9XFP-VCJRQ\n" "IEA6K-QMFHN-YVYP9\n" "XNWHC-PR7XT-NP2KL\n" "JRFCZ-XDQB3-4YRX3\n" "4V8YN-L0DRV-CIWJ7\n" "56LPR-3B48C-746IK\n" "BDFW4-V9NZ5-JGTKZ\n" "L2FJZ-DBC2I-4CA53\n" "GEBFT-A8W6J-NHNA5\n\n" "6BRKC-TJZBC-W7E4E\n\n" "Tanuki Sunset (2020)\n" "Skateboarding Racoons\n" "Redemption Key: EZ6KQ-Q843I-4VR2K\n\n" "Swords 'n Magic and Stuff EA (2020)\n" "Cute Multiplayer RPG\n" "Redemption Key: V9KCM-ETNCK-783FC\n\n" "Sunlight (2021)\n" "Chilled, wholesome trees\n" "Redemption Key: 6XBXM-PLY8B-BH6ZI\n\n" "Space Crew (2020)\n" "Space Management Adventure\n" "Redemption Key: I24W9-5HVWA-WVVF0\n\n" "Sok-worlds (2020)\n" "Popping Micro-games\n" "Redemption Key: KLDH9-6MN8R-HGIM8\n\n" "Seals of the Bygone EA (2020)\n" "Roguelike Dungeon Delver\n" "Redemption Key: 5K984-GVM78-M0XKI\n\n" "Pyramida (2020)\n" "Popping Micro-games\n" "Redemption Key: VDVCZ-VQDFA-RGTD2\n\n" "Primal Light (2020)\n" "16bit Boss Battler\n" "Redemption Key: CIIF5-YZCV3-D5W5Z\n\n" "Popo's Tower (2020)\n" "Popping Micro-games\n" "Redemption Key: M8F2X-M39FD-X2QEC\n\n" "Pocket Watch (2020)\n" "Popping Micro-games\n" "Redemption Key: CTENC-YQRX2-WJFDE\n\n" "PlateUp! (2022)\n" "Brilliant Cooking Chaos\n" "Redemption Key: LCW28-X8FNM-PMC25\n\n" "Plague Inc: Evolved (2016)\n" "End The World\n" "Redemption Key: C7DJ7-P89MM-XNP6F\n\n" "Pendragon (2020)\n" "Mythic Tactical Narrative\n" "Redemption Key: F7AAG-9J2M4-2ZP7W\n\n" "Paradise Lost (2021)\n" "Postapocalyptic Adventure\n" "Redemption Key: ZJP3N-YW9BJ-9QLNA\n\n" "Paperball (2020)\n" "Stunt Ball Racing\n" "Redemption Key: JXBRJ-B20WN-6YZDT\n\n" "Orbi Universo (2020)\n" "Abstract Civ Strategy\n" "Redemption Key: RBBXD-02R4I-ZBCWN\n\n" "Moon Hunters (2016)\n" "Tiny DnD Adventures\n" "Redemption Key: 6QPQ5-Y4XYI-MWXRX\n\n" "Men of War: Assault Squad 2 (2014)\n" "Tanks Troops Tactics\n" "Redemption Key: 0BA6C-39RXP-LF0P2\n\n" "Mech Mechanic Sim (2021)\n" "Build-a-mech workshop\n" "Redemption Key: C45EI-0G6HZ-VWWW4\n\n" "Maiden and Spell (2020)\n" "Flying Magic Bullet-hell\n" "Redemption Key: 54EGK-4WR22-F2CPT\n\n" "Mad Experiments: Escape Room (2020)\n" "Mind-bending Escape Room\n" "Redemption Key: T896H-F6XHH-H77PJ\n\n" "Lucifer Within Us (2020)\n" "Intricate Demonic Detective\n" "Redemption Key: QJNJ6-R709L-JZJ27\n\n" "Lost Nova (2022)\n" "Explore Build Craft\n" "Redemption Key: YD66M-DW407-TXBY4\n\n" "Little Inferno (2012)\n" "Burn Your Toys\n" "Redemption Key: 2FDDH-BVHCF-ZGMRG\n\n" "Kitaria Fables (2021)\n" "ARPG with Farming\n" "Redemption Key: CR79H-XXQ39-XR326\n\n" "King Pins (2020)\n" "Popping Micro-games\n" "Redemption Key: G664K-X90Y4-TI3JL\n\n" "KILLRUN (2022)\n" "Run Gun Parkour!\n" "Redemption Key: ZQMBT-8LLNX-PLP6W\n\n" "Kaiju Wars (2022)\n" "Monster Mashing Tactics\n" "Redemption Key: JBAMA-7DNZT-PCFK9\n\n" "JARS (2021)\n" "Creepy Puzzles\n" "Redemption Key: MJY23-KB8DY-AVM9E\n\n" "Imagine Earth (2021)\n" "Planetary Colonization\n" "Redemption Key: IRENW-AD95D-W8XZY\n\n" "Idle Champions - Prismeer Sentry Skin & Feat Pack (2022)\n" "Buff Your Champion\n" "Redemption Key: 3H8T8-JD6C0-WTFEL\n\n" "Idle Champions - Polymorphed Shandie Skin & Feat Pack (2022)\n" "Buff Your Champion\n" "Redemption Key: D29T4-W9JV6-YZB6C\n\n" "House (2020)\n" "Spooky Pixel House\n" "Redemption Key: 3EZRM-9F8E8-4BD0R\n\n" "Here Comes Niko! (2021)\n" "Cute Cozy Platforming\n" "Redemption Key: XXBKJ-KNQ7R-BKPYZ\n\n" "Hellblusser (2021)\n" "Popping Micro-games\n" "Redemption Key: C4IC8-5YY5B-8NMLM\n\n" "Geneshift EA (2017)\n" "Cars Guns Action\n" "Redemption Key: ELNYT-TM9C6-36NNC\n\n" "Fury Unleashed (2020)\n" "Frantic Roguelike Shooter\n" "Redemption Key: M96X5-5647E-VXFEL\n\n" "Fresh Store Discount\n" "25% off these collections; RTGame, High Rollers, Hat Films, Spiffing Brit & ISP, active from Dec 1 to Jan 17590\n" "Redemption Key: 25HN26\n\n" "Flipper Volcano (2020)\n" "Popping Micro-games\n" "Redemption Key: HA84M-BAA6B-WXWG2\n\n" "Fit For a King (2019)\n" "Marry Divorce Execute\n" "Redemption Key: BCA7H-8KYAT-RYZ45\n\n" "First Class Trouble (2021)\n" "Cruise Ship Among Us\n" "Redemption Key: XWM5E-8NV7T-6P0HE\n\n" "Final Vendetta (2022)\n" "Side Scrolling Brawler\n" "Redemption Key: ABW65-X9YX8-0L8L3\n\n" "Fanatical spinning wheel\n" "redeem your code here: https://www.fanatical.com/en/redeem-code\n" "Redemption Key: RCtG6PHzzcXXsr\n\n" "Factory Town (2021)\n" "Automate Your Town\n" "Redemption Key: VTMA4-05TF8-7RVK9\n\n" "Eternal Hope (2020)\n" "Cinematic Puzzle Platformer\n" "Redemption Key: 4YFK3-CL7B0-K2559\n\n" "Epic Battle Fantasy 5 (2018)\n" "Tongue-in-cheek JRPG\n" "Redemption Key: YBJWL-VZRAH-9LQIB\n\n" "Dude, Stop (2018)\n" "Be Annoying\n" "Redemption Key: XFHWM-T5C33-BT9JW\n\n" "Driftland: The Magic Revival (2019)\n" "Floating Wizards 4X\n" "Redemption Key: CEKXL-34ARQ-W622F\n\n" "Displate Discount code\n" "40% off at displate (redeemable on the displate website)\n" "Redemption Key: CD2N2KZ7\n\n" "Discolored (2019)\n" "Perform Pigment Puzzles\n" "Redemption Key: BFP3L-KHCQH-CYYJQ\n\n" "DESOLATE (2019)\n" "Coop Zombie Survival\n" "Redemption Key: 4AVFQ-MHV3F-TEH33\n\n" "Deponia (2014)\n" "Iconic Point-and-Click\n" "Redemption Key: YNMK3-87GGA-7GIBR\n\n" "Demolish & Build 2018 (2018)\n" "Knock Stuff Over\n" "Redemption Key: K4LE8-VLEG2-5D92N\n\n" "delta: Rings of Saturn (2019)\n" "Realistic Space Mining\n" "Redemption Key: J3K05-7G406-7DQDP\n\n" "Dark Nights with Poe and Munro (2020)\n" "Supernatural FMV Strangeness\n" "Redemption Key: TPW4R-CAZ67-AX7II\n\n" "Danger Scavengers (2021)\n" "Cyberpunk Rooftop Romp\n" "Redemption Key: 4F0DX-W4T09-3JIQC\n\n" "CryoFall (2021)\n" "Sci-fi Multiplayer Survival\n" "Redemption Key: 4P6KY-40C3X-3ENQR\n\n" "Crazy Machines 3 (2016)\n" "Wacky Physics Sandbox\n" "Redemption Key: T3QXN-V0WR8-4JKVV\n\n" "ConnecTank (2021)\n" "Coop Conveyer Battles\n" "Redemption Key: AYZVT-D8F8B-LW9IJ\n\n" "Concrete Jungle (2015)\n" "Classic City Builder\n" "Redemption Key: WJG8H-BR0VM-0HIZE\n\n" "City Climber (2017)\n" "Ragdoll Climbing Fun\n" "Redemption Key: C7LPY-ZD0ZM-638X2\n\n" "CHUCHEL (2018)\n" "Comedy Mushroom Adventure\n" "Redemption Key: GEW0J-CW9BJ-HHGT4\n\n" "Chronicon (2020)\n" "Live Loot Level-Up\n" "Redemption Key: HE8CZ-3LPE6-RKJW3\n\n" "Chroma Squad (2015)\n" "Power Ranger Manager\n" "Redemption Key: R2QGM-JIH70-57H2Q\n\n" "Chatventures (2020)\n" "Popping Micro-games\n" "Redemption Key: CKTGT-LWT97-4TH2C\n\n" "Chaos Reborn (2015)\n" "Tactical Wizard Wars\n" "Redemption Key: 4AMFE-PEEFN-4IE2X\n\n" "Bonfire Peaks (2021)\n" "Atmospheric Burning Puzzles\n" "Redemption Key: DL3EA-4C2VD-TFB3M\n\n" "Big Crown Showdown (2018)\n" "Frantic Fall-Knights\n" "Redemption Key: AL4G8-CFJ06-GL0X6\n\n" "Ato (2020)\n" "Cat Samurai Adventure\n" "Redemption Key: EDE9C-8YNTQ-H9CXT\n\n" "Aporia: Beyond The Valley (2017)\n" "Stunning Story Puzzler\n" "Redemption Key: KJI3R-6FMTH-9KJ6H\n\n" "Ancient Enemy (2020)\n" "Modern Fantasy Solitaire\n" "Redemption Key: 0JYQ0-W5QXM-9LW3Y\n\n" "Age of Wonders: Planetfall (2019)\n" "Beautiful Sci-Fi 4X\n" "Redemption Key: 447DM-IW4Y7-TZRMG\n\n" "Aeronautica Imperialis: Flight Command (2020)\n" "Turn-based Top Gun\n" "Redemption Key: KPH7N-22L7D-AX5TD\n\n" "Absolute Drift (2015)\n" "Chill Drifting\n" "Redemption Key: YWHF9-6KTFI-CPRLL\n\n" "A Total War Saga: TROY (2021)\n" "Swords Sandals Slaughter\n" "Redemption Key: K4B0G-6WA7G-3XN25\n") matches = re.finditer(regex, test_str, re.MULTILINE) for matchNum, match in enumerate(matches, start=1): print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group())) for groupNum in range(0, len(match.groups())): groupNum = groupNum + 1 print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum))) # Note: for Python 2.7 compatibility, use ur"" to prefix the regex and u"" to prefix the test string and substitution.

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