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"\d{6}\s*([^\t]*?)\s*\t\s*([^\t]*)\s*s0(\d{6})@htw-berlin.de.*" test_str = ("\n" "Nr MtkNr Name Vorname Email Studiengang Fachsemester Status\n" " 1: 546254 Adiputro Axel Ferris s0546254@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 7 angemeldet \n" " 2: 560996 Rachmatullah Fathoni s0560996@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 6 angemeldet \n" " 3: 561110 Shcherban Oksana s0561110@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 10 angemeldet \n" " 4: 569153 Wanat Philipp s0569153@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 6 angemeldet \n" " 5: 572928 Staats Martin s0572928@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 7 angemeldet \n" " 6: 573033 Trinh Quynh Vi Ngoc s0573033@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 4 angemeldet \n" " 7: 574074 Baliev Krist s0574074@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 3 angemeldet \n" " 8: 575428 Seidel Richard s0575428@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 4 angemeldet \n" " 9: 575695 Valentin Leonard s0575695@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 4 angemeldet \n" " 10: 575730 Schuldt Jonah-Sophie s0575730@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 4 angemeldet \n" " 11: 575754 Blank Maximilian s0575754@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 4 angemeldet \n" " 12: 575868 Klingberg Paul s0575868@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 4 angemeldet \n" " 13: 576962 Strecker Ralf s0576962@htw-berlin.de Master IMI (M) H Wintersem. 2016 3 angemeldet \n" " 14: 540347 Redanz René s0540347@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 4 zugelassen \n" " 15: 549481 Müller Nadja s0549481@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 15 zugelassen \n" " 16: 550246 Ramadhan Irfan s0550246@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 7 zugelassen \n" " 17: 562212 Haseloff Moritz s0562212@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 10 zugelassen \n" " 18: 564500 Voitel Justin s0564500@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 8 zugelassen \n" " 19: 565517 Ha Le s0565517@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 7 zugelassen \n" " 20: 565873 Al Mohamad Hasan s0565873@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 8 zugelassen \n" " 21: 566367 Baloska Diro s0566367@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 8 zugelassen \n" " 22: 568194 Kolev Dimitar s0568194@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 7 zugelassen \n" " 23: 568851 Springborn Kevin s0568851@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 7 zugelassen \n" " 24: 568927 Solihin Martin Christian s0568927@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 7 zugelassen \n" " 25: 570766 Alkhodor Salim s0570766@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 6 zugelassen \n" " 26: 571336 Hedemann Katja Gertrud s0571336@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 6 zugelassen \n" " 27: 572745 Pötsch Michelle s0572745@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 5 zugelassen \n" " 28: 572933 Siewertsen Paul s0572933@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 4 zugelassen \n" " 29: 573063 Unverzagt Laura Laetitia s0573063@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 5 zugelassen \n" " 30: 574153 Hahn Hendrik s0574153@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 4 zugelassen \n" " 31: 575518 Hintze Carolin s0575518@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 4 zugelassen \n" " 32: 575888 Katysheva Daria s0575888@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 7 zugelassen \n" " 33: 575923 Lüdecke Lukas Daniel s0575923@htw-berlin.de Bachelor IMI (B) H Wintersem. 2011 4 zugelassen ") 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