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]
  • Character class intersection
    [\w&&[^\d]]
  • 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"(?<=NASDAQ:).*", flags=re.IGNORECASE) test_str = ("\n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:INM\n\n" " \n" "Go to Screener\n" " \n" " \n" "Thanks for reading,\n" "Team TradingView\n\n" "470 Olde Worthing Rd., Suite 200\n" "Westerville OH 43082\n\n" "Download on the App Store Get it on Google Play\n\n" " TradingView on Youtube \n\n" " \n" " \n" "This email was sent @gmail.com\n" "because you asked to be alerted on TradingView.com\n\n" " \n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 14:32 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:GSMG, NASDAQ:VRAR\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 14:34 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:BLZE, NASDAQ:GOEV, NASDAQ:VIR, NYSE:ZIM\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 14:35 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NYSE:TJX\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 14:36 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:BBBY, NASDAQ:NEGG\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView\n" "17 Nov 2021, 14:38 (1 day ago)\n" "Your alert was triggered New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+ Check out the following new tickers: NASDAQ:NEGG, NASDAQ:EYPT Go to Screen\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 14:39 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:INSG, NASDAQ:XERS\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 14:40 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:NEGG\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 14:41 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:INSG\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 14:42 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:BBBY, NASDAQ:PPSI, NASDAQ:SPI, NASDAQ:APWC\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 14:43 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:BRPM\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 14:44 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:GSM, NASDAQ:NEGG, NASDAQ:PCT\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 14:56 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:BLZE\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 14:58 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:OEG\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 15:14 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:INM\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 15:26 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:EYPT\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 15:34 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:SEV\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 15:40 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:FNHC\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 15:44 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NYSE:ZME\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 16:07 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: AMEX:SBEV\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 16:13 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NYSE:ZME\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 16:37 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:IMV\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 16:39 (1 day ago)\n\n\n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 16:43 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:AGTC\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 17:34 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:AESE\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 17:49 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NYSE:ZME\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 17:55 (1 day ago)\n\n\n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 17:56 (1 day ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:WORX\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 17:59 (1 day ago)\n\n\n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 18:38 (23 hours ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:ENSC\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 19:29 (22 hours ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:SABS\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 19:52 (22 hours ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:HMTV\n\n" " \n" "Go to Screener\n" " \n\n\n" "TradingView <noreply@tradingview.com>\n" "17 Nov 2021, 20:41 (21 hours ago)\n\n\n" " \n" "TradingView \n" " \n\n" " \n\n" " \n" "Your alert was triggered\n" " \n" "New Volatility - B/out +7.5% (15 minutes) - Vol-100k+, RV-5+\n\n" " \n" "Check out the following new tickers: NASDAQ:BLBX") 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