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

/
/
gmi

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"(?:\[(?:(\+[0-9]{1,2}|(?:I PRI|II DUO|III TRI|IV TET|V PEN)):? )?(.*)\]) (?:([0-9,]*)).*?\(([0-9:]{5})\)" test_str = ("[II DUO: Blue Coral Ring] 14,479,777 Silver(Marketplace Registration Queue) (11:17)\n" "[I PRI: Blue Coral Ring] 14,479,777 Silver(Marketplace Registration Queue) (11:17)\n" "[Blue Coral Earringssss] sold to Kasumizu through a pre-order. (11:16)\n" "[V PEN: Blue Coral Earringssss] sold to Kasumizu through a pre-order. (11:16)\n" "[Blue Coral Earring] 4,999,999 Silver(Marketplace Registration Queue) (11:16) \n" "[+5 Steel Combat Champron] 4,924,197 Silver(Marketplace Registration Queue) (11:15)\n" "[Blue Coral Earring] 4,999,999 Silver(Marketplace Registration Queue) (11:16)\n" "[[Ranger] Blue Coral Earring] 4,999,999 Silver(Marketplace Registration Queue) (11:16)\n" "[+5 Steel Combat (nampron] 4,924,197 Silver(Marketplace Registration Queue) (11:15)\n" "[+15 Vuria snortsword of Crimson Flame] 14,348,172 Silver(Marketplace Registration Queue) (11:10)\n" "[Blue Coral Earring] 4,999,999 Silver(Marketplace Registration Queue) (11:16)\n" "[[Berserker] Cavaro Clasic Set] 4,999,999 Silver(Marketplace Registration Queue) (11:16)\n" "[Blue Coral Earring] 4,999,999 Silver(Marketplace Registration Queue) (11:16)\n" "[Blue Coral Earring] 4,999,999 Silver(Marketplace Registration Queue) (11:16)\n" "[Ring of Crescent Guardian(30 days)] 49,559,233 Silver(Marketplace Registration Queue) (11:16)\n" "[Basilisk's Belt] 74,999,999 Silver(Marketplace Registration Queue) (11:16)\n" "[Sharp Black Crystal Shard] 3,699,999 Silver(Marketplace Registration Queue) (11:16)\n" "[Liverto Amulet] 8,999,999 Silver(Marketplace Registration Queue) (11:16)\n" "[Liverto Amulet] 8,999,999 Silver(Marketplace Registration Queue) (11:16)\n" "[snarp Black Crystal snard] 3,699,999 Silver(Marketplace Registration Queue) (11:16)\n" "[Liverto Amulet] 8,999,999 Silver(Marketplace Registration Queue) (11:16)\n" "[Liverto Amulet] 8,999,999 Silver(Marketplace Registration Queue) (11:16)\n" "[Basilisk's Belt] 74,999,999 Silver(Marketplace Registration Queue) (11:16)\n" "[Sharp Black Crystal Shard] 3,699,999 Silver(Marketplace Registration Queue) (11:16)\n" "[Forest Fury] 3,699,999 Silver(Marketplace Registration Queue) (11:16)\n" "[Blue Coral Earring] sold to Kasumizu through a pre-order. (11:16)\n" "[Sharp Black Crystal Shard] sold to Laforet through a pre-order. (11:16)\n" "[+15 Ultimate Agerian Shoes] 16,499,992 Silver(Marketplace Registration Queue) (11:16)\n" "[Black Magic Crystal - Cobelinus] 7,472,292 Silver(Marketplace Registration Queue) (11:16)\n" "[+15 Ultimate Agerian Gloves] 16,499,992 Silver(Marketplace Registration Queue) (11:16)\n" "[Mark of Shadow] 6,339,996 Silver(Marketplace Registration Queue) (11:17)\n" "[II DUO: Blue Coral Ring] 14,479,777 Silver(Marketplace Registration Queue) (11:17)") matches = re.finditer(regex, test_str, re.MULTILINE | re.IGNORECASE) 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