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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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

/
/
g

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"在此输入你的正则表达式" test_str = ("A(\"Excalibur\", \"誓约胜利之剑\", LONG_SWORD, (SPFX_NOGEN | SPFX_RESTR | SPFX_SEEK | SPFX_DEFN | SPFX_INTEL | SPFX_SEARCH), \n" " 0, 0, PHYS(5, 10), DRLI(0, 0), NO_CARY, 0, A_LAWFUL, PM_KNIGHT, NON_PM, 4000L, NO_COLOR);\n" "/*\n" " * Stormbringer only has a 2 because it can drain a level,\n" " * providing 8 more.\n" " */\n" "A(\"Stormbringer\", \"兴风者\", RUNESWORD,\n" " (SPFX_RESTR | SPFX_ATTK | SPFX_DEFN | SPFX_INTEL | SPFX_DRLI), 0, 0,\n" " DRLI(5, 2), DRLI(0, 0), NO_CARY, 0, A_CHAOTIC, NON_PM, NON_PM, 8000L,\n" " NO_COLOR);\n" "/*\n" " * Mjollnir will return to the hand of the wielder when thrown\n" " * if the wielder is a Valkyrie wearing Gauntlets of Power.\n" " */\n" "A(\"Mjollnir\", \"雷神之锤\", WAR_HAMMER, /* Mjo:llnir */\n" " (SPFX_RESTR | SPFX_ATTK), 0, 0, ELEC(5, 24), NO_DFNS, NO_CARY, 0,\n" " A_NEUTRAL, PM_VALKYRIE, NON_PM, 4000L, NO_COLOR);\n" "A(\"Cleaver\", \"撕裂者\", BATTLE_AXE, SPFX_RESTR, 0, 0, PHYS(3, 6), NO_DFNS, NO_CARY, 0, A_NEUTRAL, PM_BARBARIAN, NON_PM, 1500L, NO_COLOR);\n" "/*\n" " * Grimtooth glows in warning when elves are present, but its\n" " * damage bonus applies to all targets rather than just elves\n" " * (handled as special case in spec_dbon()).\n" " */\n" "A(\"Grimtooth\", \"邪兽之牙\", ORCISH_DAGGER, (SPFX_RESTR | SPFX_WARN | SPFX_DFLAG2),\n" " 0, M2_ELF, PHYS(2, 6), NO_DFNS,\n" " NO_CARY, 0, A_CHAOTIC, NON_PM, PM_ORC, 300L, CLR_RED);\n" "/*\n" " * Orcrist and Sting have same alignment as elves.\n" " *\n" " * The combination of SPFX_WARN+SPFX_DFLAG2+M2_value will trigger\n" " * EWarn_of_mon for all monsters that have the M2_value flag.\n" " * Sting and Orcrist will warn of M2_ORC monsters.\n" " */\n" "A(\"Orcrist\", \"杀兽剑\", ELVEN_BROADSWORD, (SPFX_WARN | SPFX_DFLAG2), 0, M2_ORC, PHYS(5, 0), \n" " NO_DFNS, NO_CARY, 0, A_CHAOTIC, NON_PM, PM_ELF, 2000L, CLR_BRIGHT_BLUE); /* bright blue is actually light blue */") matches = re.finditer(regex, test_str) 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