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
Processing...

Test String

Code Generator

Language

Generated Code

import re regex = re.compile(r"(zzdel\s+)(from\s+)([^\.]+)\.([^\s]+\s)([^\s]+)\n(INNER\s+)(JOIN\s+)([^\.]+)\.(T001\s+)(t0\s+)(on\s+)(t0\.mandt\s+)(=\s+)([^\.]+)\.(mandt\s+)") test_str = ("from SPP01.AUFM t\n\n" "'' zzdel\n" "from LP101.AFRU afru\n" "INNER JOIN SPP01.T001 t0 on t0.mandt = t.mandt\n" "INNER JOIN SPP01.BSEG on x=y\n\n\n" "from LP101.AFRU afru\n" "INNER JOIN SPP01.T001 t0 on t0.mandt = t.mandt\n\n" "INNER JOIN SPP01.T001 t0 on t0.mandt=t.mandt\n" "INNER JOIN SPP01.T001 t0 on t0.mandt = t.mandt\n\n" "(zzdel\\s+)\n" "(from\\s+)([^\\.]+)\\.([^\\s]+\\s)([^\\s]+)\n" "(INNER\\s+)(JOIN\\s+)([^\\.]+)\\.(T001\\s+)(t0\\s+)(on\\s+)(t0\\.mandt\\s+)(=\\s+)([^\\.]+)\\.(mandt\\s+)\n\n" "(INNER\\s+)(JOIN\\s+)([^\\.]+)\\.([^\\.]+)(on\\s)([^\\.]+)(=)([^\\s]+)\n" "\\1\\2\\.\\3\\4\\nINNER JOIN \\2\\.T001 t0 on t0\\.mandt =\\4\\.mandt") match = regex.search(test_str) if match: print(f"Match was found at {match.start()}-{match.end()}: {match.group()}") for group_num, group in enumerate(match.groups(), start=1): print(f"Group {group_num} found at {match.start(group_num)}-{match.end(group_num)}: {group}")

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