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"(object-group service (?P<name>.+)(?:\n |.)|service-object (?P<protocol>.+) destination eq (?P<port_no1>\d{0,5} |\w{0,10}.+)\n|service-object (?P<protocol2>object) (?P<port_no2>\d{0,5} |\w{0,10}.+)\n)", flags=re.MULTILINE) test_str = ("object-group service DM_INLINE_SERVICE_8\n" " service-object tcp destination eq ldap\n" " service-object udp destination eq syslog\n" " service-object object kerberos5-tcp\n" " service-object object kerberos5-udp\n" " service-object object ldap-udp\n" " service-object udp destination eq domain\n" " service-object object ldap-gcs\n" " service-object object TCP_3268\n" " service-object object TCP_3269\n" " service-object object TCP_445\n" " service-object tcp-udp destination eq domain\n" " service-object tcp destination eq ldaps\n" " service-object udp destination eq ntp\n" " service-object object TCP_464\n" "object-group network DM_INLINE_NETWORK_13\n" " network-object object IN_V030_197_memcache_01\n" " network-object object IN_V030_198_memcache_02\n" "object-group service DM_INLINE_SERVICE_9\n" " service-object tcp destination eq ldap\n" " service-object udp destination eq syslog\n" " service-object object kerberos5-tcp\n" " service-object object kerberos5-udp\n" " service-object object ldap-udp\n" " service-object udp destination eq domain\n" " service-object object ldap-gcs\n" " service-object object TCP_3268\n" " service-object object TCP_3269\n" " service-object object TCP_445\n" " service-object tcp-udp destination eq domain\n" " service-object tcp destination eq ldaps\n" " service-object udp destination eq ntp\n" " service-object object TCP_464\n") matches = regex.finditer(test_str) for match_num, match in enumerate(matches, start=1): print(f"Match {match_num} 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