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

/
/
ms

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"(?ms)(^NAME.*?)^\s+^\d" test_str = ("SQL*Plus: Release 11.2.0.1.0 Production on Wed Jan 27 13:46:07 2016\n\n" "Copyright (c) 1982, 2010, Oracle. All rights reserved.\n\n\n" "Connected to:\n" "Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production\n" "With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,\n" "Data Mining and Real Application Testing options\n\n\n" "NAME\n" "--------------------------------------------------------------------------------\n" "Agent-Job Follow Up Missed Group D\n" "Agent-Job Follow Up Missed Group E\n" "Audit Archive\n" "Day BGO - 705 and 705NA - A (2)\n" "Day BGO - ERR Quebec - A\n" "Dispatch Lunch Break Agent (Pre-Agent) - Group D\n" "Helper Job Agent (Amend, Prevent, Lead) Group A\n" "Incomplete Tasks Display Status Cleanup - Group A\n" "Jeopardy Agent (Late EnRoute, OnSite, Complete) Group A\n" "Jeopardy Agent (Late EnRoute, OnSite, Complete) Group B\n" "Lunch Break Report Agent(Post-Agent) - Group A\n\n" "NAME\n" "--------------------------------------------------------------------------------\n" "MST Validation - Group A\n" "MST Validation - Group C\n" "Unschedule INHS Tasks\n" "Unschedule Jobs with Schedule Update Failure - Group E\n\n" "15 rows selected.\n\n" "Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production\n" "With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,\n" "Data Mining and Real Application Testing options") matches = re.search(regex, test_str, re.MULTILINE | re.DOTALL) if matches: print ("Match was found at {start}-{end}: {match}".format(start = matches.start(), end = matches.end(), match = matches.group())) for groupNum in range(0, len(matches.groups())): groupNum = groupNum + 1 print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = matches.start(groupNum), end = matches.end(groupNum), group = matches.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