Regular Expressions 101

Save & Manage Regex

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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]
  • Character class intersection
    [\w&&[^\d]]
  • 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"(?<Catergory>.+[A-z]{2}\d{4})\s+(?<FY1>[\d.,-]+(?=\s))\s*(?<FY2>[\d.,-]+(?=\s))\s*(?<FY3>[\d.,-]+(?=\s))\s*(?<FY4>[\d.,-]+(?=\s))\s*(?<FY5>[\d.,-]+)\s*(?<FY6>[\d.,-]+)\s*(?<FY7>[\d.,-]+)\s*(?<FY8>[\d.,-]+)\s*(?<FY9>[\d.,-]+)", flags=re.MULTILINE) test_str = ("Return to Contents\n\n" "Streets Improvement Summary\n\n" "Capital Expenses (1,000s) Total Prior Years FY 2021 FY 2022 FY 2023 FY 2024 FY 2025 Years 6-10 Beyond 10\n" "Yrs\n\n" "Ocotillo Road - Greenfield to Higley ST0540 66,519 332 12,413 53,774 - - - - -\n\n" "Baseline Road - Burk to Consolidated Canal ST0710 1,340 87 1,253 - - - - - -\n\n" "Baseline Road - Greenfield to Power ST0780 8,801 112 - - - - 8,689 - -\n\n" "Recker Road - Ocotillo to Chandler Heights ST0800 11,611 - - - - - - 11,611 -\n\n" "Hunt Highway - Val Vista to 164th ST0840 86,241 40 - - - - - - 86,201\n\n" "Recker Road - Ray to SR 202 ST0960 3,940 455 3,485 - - - - - -\n\n" "Higley Road - Riggs to Stacey ST0980 20,403 1,973 - - - - - 18,430 -\n\n" "Ocotillo Road - 148th to Greenfield ST0990 20,317 - 5,568 14,749 - - - - -\n\n" "Elliot Road - Neely to Burk ST1050 4,060 - - - - - - - 4,060\n\n" "Val Vista Drive - Appleby to Riggs ST1120 34,277 7,513 26,764 - - - - - -\n\n" "Lindsay Road - Queen Creek to Ocotillo ST1140 3,881 171 1,097 2,613 - - - - -\n\n" "Hunt Highway - Higley to Recker ST1150 9,438 - - - - - - 9,438 -\n\n" "Recker Road - Riggs to Hunt Highway ST1160 11,395 104 - - - - - 11,291 -\n\n" "Lindsay Road - Pecos to SR 202 ST1170 12,171 6,609 5,562 - - - - - -\n\n" "Warner Road - Power to East of Recker ST1180 14,752 - - - 14,752 - - - -\n\n" "Power Road - Guadalupe to Santan Freeway ST1200 15,140 - - - 15,140 - - - -\n\n" "Val Vista Drive - Riggs to Hunt Highway ST1270 7,779 - - - - - - 7,779 -\n\n" "Warner and Greenfield Intersection ST1300 12,367 - - - - - - - 12,367\n\n" "Ray and Gilbert Intersection ST1310 8,536 - - - - - - 8,536 -\n\n" "Elliot and Gilbert Intersection ST1320 8,626 66 - - - - 8,560 - -\n\n" "Guadalupe and Val Vista Intersection ST1330 8,880 - - - - - - 8,880 -\n\n" "Guadalupe and Power Intersection ST1340 8,790 - - 8,790 - - - - -\n\n" "Elliot and Cooper Intersection ST1380 10,370 670 9,700 - - - - - -\n\n" "Elliot and Higley Intersection ST1390 7,552 - - - - - - 7,552 -\n\n" "Germann Road - Gilbert to Val Vista ST1450 27,429 4,385 23,044 - - - - - -\n\n" "Turn Lane Safety and Congestion Improvements ST1540 9,329 723 1,170 1,104 1,583 1,583 1,583 1,583 -\n\n" "Accessibility Upgrades in Public ROW ST1550 2,209 1,278 586 345 - - - - -\n\n" "Constellation Way - South of Coldwater ST1570 3,356 55 - - - - - 3,301 -\n\n" "Lindsay Road/SR 202 Traffic Interchange ST1580 18,151 7,658 10,493 - - - - - -\n\n" "Higley and Pecos Intersection ST1590 928 - - 928 - - - - -\n\n" "Infrastructure Imp at Railroad Crossings ST1600 2,545 57 2,488 - - - - - -\n\n" "Mesquite Street - Lindsay to Val Vista ST1620 6,107 - - - 6,107 - - - -\n\n" "Adora Trails Improvements ST1660 874 830 44 - - - - - -\n\n" "Val Vista Drive Reconstruction ST1690 7,405 491 6,914 - - - - - -\n\n" "Val Vista Drive - Eastern Canal Bridge Repair ST1710 1,055 150 905 - - - - - -\n\n" "Val Vista Lakes Improvements ST1720 48,195 480 64 12,147 8,860 10,276 16,368 - -\n\n" "Higley and Baseline Intersection ST1740 5,028 4,714 314 - - - - - -\n\n" "Guadalupe Road Improvements ST1770 9,920 - 1,750 8,170 - - - - -\n\n" "PM10 Paving ST1790 3,283 131 52 1,512 - - - 1,588 -\n\n" "Cooper Road - Encinas to Baseline ST1800 7,743 - - 7,743 - - - - -\n\n" "Pecos Road - Allen to Lindsay ST1820 2,962 - 342 2,620 - - - - -\n\n" "Higley Road - North of Elliot ST1830 1,523 - - 1,523 - - - - -\n\n" "Cooley Station Transit Center ST1840 10,306 - - - - 10,306 - - -\n\n" "Greenfield Road Right Turn Lane at Knox ST1850 613 - - 613 - - - - -\n\n" "Gilbert and Warner Intersection ST1860 11,493 178 53 11,262 - - - - -\n\n" "McQueen and Elliot Intersection ST1870 11,434 - - 11,434 - - - - -\n\n" "Lindsay and Guadalupe Intersection ST1880 12,608 - - - - 12,608 - - -\n\n" "Chandler Heights Improvements ST1890 3,000 - 3,000 - - - - - -\n\n" "McQueen and Guadalupe Intersection ST1910 12,369 - 2,987 9,382 - - - - -\n\n" "Val Vista and Ray Intersection ST1920 9,707 - - - - - - 9,707 -\n\n" "Power and Queen Creek Intersection ST1940 8,537 - - - - - - 8,537 -\n\n" "Market and Williams Field Interesction ST1960 813 48 39 - 726 - - - -\n\n" "Val Vista and Mercy Intersection ST1970 1,172 48 39 1,085 - - - - -\n\n" "Market and San Tan Village Intersection ST1980 1,342 55 35 - 1,252 - - - -") 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