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"Title: (?<Title>.*$)[\s\S]*(?<PhoneNumber>\d{10})[\s\S]*When: (?<Date>.[a-zA-Z]*\s.\d*\s.[a-zA-Z]*\s\d*)\s(?<Time>.[0-9]*:[0-9]*[am|pm]* \S [0-9]*:[0-9]*[am|pm]*)[\s\S]*Where: (?<Where>.*?.*$)" test_str = ("You have been invited to the following event.\n\n" "Title: לקוח רועי\n" "0544710385\n" "When: Sat 28 Nov 2020 9:30pm – 10:30pm Israel Time\n" "Where: Mazal Keshet Street, Mazal Keshet St, Hod Hasharon, Israel\n\n" "Joining info: Join with Google Meet\n" "https://meet.google.com/ngv-fxvo-oyt\n\n" "Calendar: mplmp5e1vpvapd7fl5euj7g81ytfzlem@hook.integromat.com\n" "Who:\n" " * ecmanager8@gmail.com- organiser\n" " * My Automation\n\n" "Event details: \n" "https://calendar.google.com/calendar/event?action=VIEW&eid=NnNvbTJjMW82Z3I2YWJiMmNvbzM2YjlrYzloNmFiOW82Y3FtYWJiMWM0cDNnb3I1NzBzMzJkOXA2YyBtcGxtcDVlMXZwdmFwZDdmbDVldWo3ZzgxeXRmemxlbUBob29rLmludGVncm9tYXQuY29t&tok=MjAjZWNtYW5hZ2VyOEBnbWFpbC5jb20yODdjNWU1ZjU2ZjVjNWIwZmE4NmYwOTMxNzY5NTczMGNhNGJiN2E3&ctz=Asia%2FJerusalem&hl=en_GB&es=0\n\n" "Invitation from Google Calendar: https://calendar.google.com/calendar/\n\n" "You are receiving this courtesy email at the account \n" "mplmp5e1vpvapd7fl5euj7g81ytfzlem@hook.integromat.com because you are an \n" "attendee of this event.\n\n" "To stop receiving future updates for this event, decline this event. \n" "Alternatively, you can sign up for a Google Account at \n" "https://calendar.google.com/calendar/ and control your notification \n" "settings for your entire calendar.\n\n" "Forwarding this invitation could allow any recipient to send a response to \n" "the organiser and be added to the guest list, invite others regardless of \n" "their own invitation status or to modify your RSVP. Learn more at \n" "https://support.google.com/calendar/answer/37135#forwarding") 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