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"(?:(dataLayerLocal\.products = ))\[.*\];" test_str = ("<script type=\"text/javascript\">\n" " dataLayerLocal.products = dataLayerLocal.products || [];\n" " dataLayerLocal.products = [{'amount':'0','categories':['Gereizte Augen','Augentropfen','Augentropfen','Augentropfen'],'categoryIds':['A001G001','A003E001A001','A003G002A001','A003T001A001'],'name':'Artelac Complete EDO','price':1399,'pzn':'11617896'},{'amount':'0','categories':['Fenistil'],'categoryIds':['A001F001'],'name':'Fenistil Dragees','price':599,'pzn':'00376975'},{'amount':'0','categories':['Gereizte Haut','Gesichtspflege f\\xFCr allergische Haut','Insektenstiche','Sonnenallergie & Mallorca-Akne','Basispflege & Reinigung'],'categoryIds':['A001G002','HN001A002G001','HN001A002I002','HN001A002S001','HN001N001B001'],'name':'Linola akut 0,5% Creme','price':969,'pzn':'02138990'},{'amount':'0','categories':['Gereizte Nase','Bei Allergie'],'categoryIds':['A001G003','EN002S001N003B002'],'name':'Otri-Allergie Nasenspray Fluticason','price':1049,'pzn':'12400130'},{'amount':'0','categories':['Gereizte Haut','Insektenstiche','Sonnen- & Insektenschutz'],'categoryIds':['A001G002','HN001A002I002','M004K001S003'],'name':'Soventol Gel, 20 mg Bamipin','price':499,'pzn':'00949632'},{'amount':'0','categories':['Gereizte Haut','Nachtpflege','Tagespflege','Tagespflege','empfindliche Haut','trockene Haut'],'categoryIds':['A001G002','KN001A002N001','KN001A002T001','KN001R001T001','KN001G001T001E001','KN001G001T001T001'],'name':'Eucerin UltraSensitive Beruhigende Pflege trockene Haut','price':1729,'pzn':'10268672'},{'amount':'0','categories':['Gereizte Haut','empfindliche Haut'],'categoryIds':['A001G002','KN001K001R001E001'],'name':'Eucerin pH5 Hautschutz Duschgel','price':799,'pzn':'13889245'},{'amount':'0','categories':['Gereizte Haut','empfindliche Haut'],'categoryIds':['A001G002','KN001K001R001E001'],'name':'Eucerin pH5 Hautschutz Dusch\\xF6l','price':1469,'pzn':'13889038'},{'amount':'0','categories':['Zum Einnehmen'],'categoryIds':['A001Z001'],'name':'Allvent Kapseln','price':2095,'pzn':'05884185'},{'amount':'0','categories':['Gereizte Haut','Nachtpflege','Tagespflege','Tagespflege','normale bis Mischhaut'],'categoryIds':['A001G002','KN001A002N001','KN001A002T001','KN001R001T001','KN001G001T001N001'],'name':'Eucerin UltraSensitive Beruhigende Pflege Normale/Mischhaut','price':1729,'pzn':'10268689'},{'amount':'0','categories':['Gereizte Nase','Bei Allergie'],'categoryIds':['A001G003','EN002S001N003B002'],'name':'Pollival 1 mg/ml','price':899,'pzn':'13748585'},{'amount':'0','categories':['Gereizte Haut'],'categoryIds':['A001G002'],'name':'Eucerin pH5 Hautschutz Lotion','price':1859,'pzn':'13889156'},{'amount':'0','categories':['Gereizte Haut','Reinigung','Gesichtsreinigung','empfindliche Haut','Gesichtsreinigung'],'categoryIds':['A001G002','HN001R001R001','KN001A002G001','KN001G002E001','KN001R001G001'],'name':'Eucerin UltraSensitive Reinigungslotion','price':1199,'pzn':'10268695'},{'amount':'0','categories':['Gereizte Haut','Gesichtspflege f\\xFCr allergische Haut','Insektenstiche','K\\xF6rperpflege & Reinigung','Sonnenallergie & Mallorca-Akne','Basispflege & Reinigung','Notfallapotheke'],'categoryIds':['A001G002','HN001A002G001','HN001A002I002','HN001A002K001','HN001A002S001','HN001N001B001','M004K001N002'],'name':'Ebenol 0,25% Creme','price':1089,'pzn':'04479152'},{'amount':'0','categories':['Cetirizin'],'categoryIds':['A001C001'],'name':'Cetirizin AL Direkt Lutschtabletten','price':699,'pzn':'00927352'},{'amount':'0','categories':['Gereizte Haut'],'categoryIds':['A001G002'],'name':'Eucerin pH5 Hautschutz Creme F','price':1648,'pzn':'13889096'},{'amount':'0','categories':['Gereizte Haut'],'categoryIds':['A001G002'],'name':'Eucerin pH5 Hautschutz Lotion F','price':1798,'pzn':'13889185'},{'amount':'0','categories':['Gereizte Haut','Gesichtspflege f\\xFCr allergische Haut','Insektenstiche','Sonnenallergie & Mallorca-Akne','Basispflege & Reinigung','Hauterkrankungen','Haut- & K\\xF6rperpflege','Komplexmittel','Haut, Haare & N\\xE4gel','Magen & Darm'],'categoryIds':['A001G002','HN001A002G001','HN001A002I002','HN001A002S001','HN001N001B001','M004B001H001','M004K001H003','N001H001K001','N001P001H001','N001P001M001'],'name':'Dermaplant Salbe','price':669,'pzn':'01713512'},{'amount':'0','categories':['Gereizte Nase','Immunsystem unterst\\xFCtzen','Schnupfen & Ohrenschmerzen','Befeuchtend & pflegend','Bei Allergie'],'categoryIds':['A001G003','EN002V001I001','M004K001S002','EN002S001N003B001','EN002S001N003B002'],'name':'RCPflege N Nasen und Rachenspray','price':429,'pzn':'06415162'},{'amount':'0','categories':['Allergie & Heuschnupfen','Allergie & Heuschnupfen'],'categoryIds':['A001','N001P001A001'],'name':'Pascallerg','price':1079,'pzn':'07703644'},{'amount':'0','categories':['Gereizte Haut'],'categoryIds':['A001G002'],'name':'Eucerin pH5 Hautschutz Lotion F','price':1898,'pzn':'13889179'},{'amount':'0','categories':['Gereizte Haut','empfindliche Haut'],'categoryIds':['A001G002','KN001K001R001E001'],'name':'Eucerin pH5 Hautschutz Dusch\\xF6l','price':1499,'pzn':'13889021'},{'amount':'0','categories':['Gereizte Haut','empfindliche Haut'],'categoryIds':['A001G002','KN001K001R001E001'],'name':'Eucerin pH5 Hautschutz Waschlotion','price':1099,'pzn':'13889222'},{'amount':'0','categories':['Gereizte Augen','Gereizte Nase','Zum Einnehmen','Allergisch empfindliche Augen','Komplexmittel','Allergie & Heuschnupfen'],'categoryIds':['A001G001','A001G003','A001Z001','A003G002A002','N001H001K001','N001P001A001'],'name':'Klosterfrau Allergin fl\\xFCssig','price':969,'pzn':'02855556'},{'amount':'0','categories':['Gereizte Augen','Gereizte Nase','Zum Einnehmen','Allergisch empfindliche Augen'],'categoryIds':['A001G001','A001G003','A001Z001','A003G002A002'],'name':'Loratadin AL 10 mg Tabletten','price':1822,'pzn':'01653945'},{'amount':'0','categories':['Gereizte Nase','Zum Einnehmen','Komplexmittel','Allergie & Heuschnupfen'],'categoryIds':['A001G003','A001Z001','N001H001K001','N001P001A001'],'name':'Heuschnupfenmittel DHU Mischung','price':892,'pzn':'01905022'},{'amount':'0','categories':['Loratadin','Zum Einnehmen','Allergie & Heuschnupfen'],'categoryIds':['A001L001','A001Z001','N001P001A001'],'name':'Loratadin ratiopharm 10 mg','price':1199,'pzn':'00142906'},{'amount':'0','categories':['Loratadin'],'categoryIds':['A001L001'],'name':'Lorano Pro','price':1975,'pzn':'10090197'},{'amount':'0','categories':['Gereizte Haut'],'categoryIds':['A001G002'],'name':'Eucerin pH5 Hautschutz Creme','price':1569,'pzn':'13889073'},{'amount':'0','categories':['Gereizte Augen','Zum Einnehmen','Allergisch empfindliche Augen','Komplexmittel','Allergie & Heuschnupfen'],'categoryIds':['A001G001','A001Z001','A003G002A002','N001H001K001','N001P001A001'],'name':'Klosterfrau Allergin Tabletten','price':878,'pzn':'05961218'},{'amount':'0','categories':['Gereizte Augen','Zum Einnehmen','Pflanzlich & Hom\\xF6opathisch','Schnupfen & Nasennebenh\\xF6hlenentz\\xFCndung','Allergisch empfindliche Augen','Allergie & Heuschnupfen'],'categoryIds':['A001G001','A001Z001','EN002P001','EN002S001','A003G002A002','N001P001A001'],'name':'Luffanest Tabletten','price':1317,'pzn':'01828511'},{'amount':'0','categories':['Gereizte Augen','Gereizte Nase','Zum Einnehmen','Allergisch empfindliche Augen','Komplexmittel','Allergie & Heuschnupfen'],'categoryIds':['A001G001','A001G003','A001Z001','A003G002A002','N001H001K001','N001P001A001'],'name':'allergoLoges','price':1549,'pzn':'00910512'},{'amount':'0','categories':['Gereizte Haut'],'categoryIds':['A001G002'],'name':'Eucerin pH5 Hautschutz Lotion','price':1969,'pzn':'13889133'},{'amount':'0','categories':['Zum Einnehmen','Komplexmittel','Allergie & Heuschnupfen'],'categoryIds':['A001Z001','N001H001K001','N001P001A001'],'name':'Klosterfrau Allergin Globuli','price':959,'pzn':'04629775'},{'amount':'0','categories':['Loratadin'],'categoryIds':['A001L001'],'name':'Loratadin STADA allerg 10 mg','price':256,'pzn':'01592422'},{'amount':'0','categories':['Gereizte Haut','empfindliche Haut'],'categoryIds':['A001G002','KN001K001R001E001'],'name':'Eucerin pH5 Hautschutz Waschlotion','price':679,'pzn':'13889191'}];asdasd\n" " </script>") 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