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"('|\"|)([Pp]assword|[Ss]ecret|[Aa]piKey|[Pp]rivateKey)('|\"|)(\s)?(:|=)(\s)?('|\")(.*)('|\")") test_str = ("'password':'asdf'\n" "'password' :'asdf'\n" "'password': 'asdf'\n" "'password' : 'asdf'\n\n" "'password'='asdf'\n" "'password' ='asdf'\n" "'password'= 'asdf'\n" "'password' = 'asdf'\n\n" "\"password\":\"asdf\"\n" "\"password\" :\"asdf\"\n" "\"password\": \"asdf\"\n" "\"password\" : \"asdf\"\n\n" "\"password\"=\"asdf\"\n" "\"password\" =\"asdf\"\n" "\"password\"= \"asdf\"\n" "\"password\" = \"asdf\"\n\n" "password=\"asdf\"\n" "password =\"asdf\"\n" "password= \"asdf\"\n" "password = \"asdf\"\n\n" "password='asdf'\n" "password ='asdf'\n" "password= 'asdf'\n" "password = 'asdf'\n\n" "password=asdf\n" "password =asdf\n" "password= asdf\n" "password = asdf\n\n" "Password=asdf\n\n" "secret = \"asdf\"\n" "Secret='asdf'\n\n" "asdfpassword=asdf\n" "emailPassword = soreeeaukr,so;d[\"asdfasdf\"];\n" "asdfasdfpasswordasdfasdf\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