Regular Expressions 101

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  • 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

/
/
gm

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"(Semno_h)\b\s+(\w{50})" test_str = ("CLUSTAL X (1.81) multiple sequence alignment\n\n\n" "Maca_ma TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_tonke TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "Maca_ni TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_orchr TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_nemes TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_silen TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_siber TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCTACGATGAC\n" "M_fusca TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_mulat TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_cyclo TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_fasci TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_arcto TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_thibe TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_sylva TGTG-TCTCACCATCT-TCCTACTCTCCACCACACTGAGCCCACGATGAC\n" "P_anubi TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "P_hamad TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "Papi_Pa TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "L_albig TGTG-TCTCACCATCT-TCCTACTCTCCACTACCCTGAGCCCACGATGAC\n" "L_aterr TGTG-TCTCACCATCT-TCCTACTCTCCACTACCCTGAGCCCACGATGAC\n" "Tupa_ge TGTG-TCTCACCATCT-TCCTACTCTCCACTACCCTGAGCCCACGATGAC\n" "Cb_agil TGTG-CCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "C_chrys TGTG-CCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "C_torqu TGTG-CCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_leuco TGTG-CCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_sphin TGTG-CCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "C_albog TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "cercop_ ??????????????????????????????????????????????????\n" "C_ascan TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "Cerc_ce TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "C_petau TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "Cercop_ TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "C_wolfi TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACAATGAC\n" "Cercop_ TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "C_negle TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "C_hamly TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "M_ogoue TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "C_aethi TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "C_sabae TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "C_cynos TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "Cer_lho TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "Erythro TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAGCCCACGATGAC\n" "A_nigro TGTG-TCTCACCATCT-TCCCACTCTCCACTACACTGAGCCCACGATGAC\n" "Tupa_ob TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "Tupa_ph TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "Tupa_au TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "Tupa_de TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "Tupa_fr ??????????????????????????????????????????????????\n" "Tupa_ha TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "S_entel CGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCTATGATGAC\n" "Semno_h CGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCTATGATGAC\n" "S_entel TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "Tupa_ve TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "P_ciner TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "P_nemae TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "P_nigri TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "Nasalis TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "Rhinopi TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "Presb_c TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "P_melal TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "Cb_guer TGTG-TCTCCCCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "Cb_poly TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "Cb_ango TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGATGAC\n" "PilioCb TGTG-TCTCACCATCT-TTCTACTCGCCACTACACTGAGCCCATGAT-AC\n" "hylo_ag TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACCATGAT\n" "hylo_mu TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACCATGAT\n" "hyloba_ TGTG-TCKCACCATCT-TCCTACTCTCCACTACACTGAACCCACCATGAT\n" "Symphal TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACCATGAC\n" "Nomas_l TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACCATGAT\n" "Nomas_s TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACCATGAT\n" "Nomas_c TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACCATGAT\n" "Nomas_g TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACCATGAT\n" "Ptroglo TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACAATGAC\n" "P_trogl TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACAATGAC\n" "Pan_pan TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACAATGAC\n" "Homo_sa TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACAATGAC\n" "Gorilla TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACAATGAC\n" "png_abe TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACGATGAC\n" "png_pyg TGTG-TCTCACCATCT-TCCTACTCTCCACTACACTGAACCCACGATGAC\n" "Ca_jacc CGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "Ca_peni CGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "Ca_geof CGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "Ca_kuhl CGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "Ca_auri ??????????????????????????????????????????????????\n" "Mico_ar CGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "Mico_hu CGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "Cebuell CGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "C_goeld TATG-TCTCTGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "L_chrys TGCG-TCTCAGCATCC-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "L_rosal TGCG-TCTCAGCATCC-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "S_bicol TGTG-TCTCAGCATCT-TCCTGCTCTCCACCATACTGAGCCCAAGATGAC\n" "S_marti TGTG-TCTCAGCCTCTATCCTGCTCTCCACCATACTGAGCCCAAGATGAC\n" "S_midas TGTG-TCTCAGCATCT-TCCTGCTCTCCACCATACTGAGCCCAAGATGAC\n" "S_geoff TGTG-TCTCAGCATCT-TCCTGCTCTCCACCATACTGAGCCCAAGATGAC\n" "S_oedip TGTG-TCTCAGCATCT-TCCTGCTCTCCACCATACTGAGCCCAAGATGAC\n" "S_labia TGTG-TCTCAGCATCT-TCCTGCTCTCCACCATACTGAGCCCAAGATGAC\n" "S_mysta TGTG-TCTCAGCATCT-TCCTGCTCTCCACCATACTGAGCCCAAGATGAC\n" "S_imper TGTG-TCTCAGCATCT-TCCTGCTCTCCACCATACTGAGCCCAAGATGAC\n" "S_fusci TGTG-TCTCAGCATCT-TCCTGCTCTCYACCATACTGAGCCCAAGATGAC\n" "A_azar_ TGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "A_azar_ TGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "Aot_aza TGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "A_nancy TGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGTGCCCAAGATGAC\n" "A_Linus ??????????????????????????????????????????????????\n" "A_trivi ??????????????????????????????????????????????????\n" "C_robus ?????????AGCA-TT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "C_xanth TGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "Cebs_ap TGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "C_capuc TGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "C_albif TGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "C_oliva TGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "S_oerst ?????????AGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "S_sciur TGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCCCAAGATGAC\n" "Saim_us ??????????????????????????????????????????????????\n" "S_boliv ??????????????????????????????????????????????????\n" "A_belze TGTG-TMTCAGAATCT-TCCTGCTCTCCACCACACTGAGCCCACCATGAC\n" "A_geoff ??????????????????????????????????????????????????\n" "A_hybri TGTG-TCTCAGAATCT-TCCTGCTCTCCACCACACTGAGCCCACCATGAC\n" "A_fusci TGTG-TCTCAGAATCT-TCCTGCTCTCCACCACACTGAGCCCACCATGAC\n" "Atel_ch TGTG-TCTCAGAATCT-TCCTGCTCTCCACCACACTGAGCCCACCATGAC\n" "A_panis TGTG-TCTCAGAATCT-TCCTGCTCTCCACCACACTGAGCCCACCATGAC\n" "B_arach TGTG-TCTCAGAATCT-TCCTGCTCTCCACCACACTGAGCCCACCATGAC\n" "B_hypox CGTG-TCTCAGAATCT-TCCTGCTCTCCACCACACTGAGCCCACCATGAC\n" "Lagot_c TGTG-TCTCAGAATCT-TCCTGCTCTCCACCACACCGAGCCCACCATGAC\n" "L_lagot TGTG-TCTCAGAATCT-TCCTGCTCTCCACCACACCGAGCCCACCATGAC\n" "A_belze CGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCACACAATGAT\n" "Alouat_ CGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCACACGATGAT\n" "Alout_S CGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCACACGATGAT\n" "A_palli CGTG-TCTCAGCATCT-TCCTGCTCTCCACCACACTGAGCGCACGTTGAT\n" "C_brunn ??????????????????????????????????????????????????\n" "Callic_ TGTG-TCTTAGTATCT-TCCTGCTCTCCACCACACTGAGCCCACGATGAC\n" "C_cupre TGTG-TCTTAGTATCT-TCCTGCTCTCCACCACACTGAGCCCACGATGAC\n" "C_calig TGTG-TCTTAGTATCT-TCCTGCTCTCCACCACACTGAGCCCACGATGAC\n" "C_donac TGTG-TCTTAGTATCT-TCCTGCTCTCCACCACACTGAGCCCACGATGAC\n" "C_coimb TGTG-TCTTAGTATCT-TCCTGCTCTCCACCATACTGAGCCCACGATGAC\n" "C_perso TGTG-TCTCAGTATCT--CCTGCT-CTCACCATACTGAGCCCACGATGAC\n" "C_nigri ??????????????????????????????????????????????????\n" "C_melan TGTG-TCTCAGCATCT-TCCTGCTCCCCACCACACTGAGCCCAAGATGAC\n" "Cacaj_c TGTG-TCTCAGCATCT-TCCTGCTCCCCACCACACTGAGCCCACGATGAC\n" "C_israe TGTG-TCTCAGCATCT-TCCTGCTCCCCACCACACTGAGCCCACGATGAC\n" "C_satan TGTG-TCTCAGCATCT-TCCTGCTCCCCACCACACTGAGCCCACGATGAC\n" "P_irror TGTG-TCTCAGCAT-T-TCCTGCTCCCCACCACACTGAGCCCACGATGAC\n" "Papi_Pa TGTG-TCTCAGCATCT-TCCTGCTCCCCACCACACTGAGCCCACGATGAC\n" "Tupa_ba CAT--CCTCAATGTCT-TTCTATTCTCTACCACGCTGAGCCCAGGATAAC\n" "Tupa_sy GAT--CCTCAATGTCT-TTCTATTCTCCACCACGCTGAGCCCAGGATAAC\n" "L_ankar TATG-TCCCAACATTT-TCTTATTCTCCACCGC--TGAGCYCARGATGAT\n" "L_septe TATG-TCCCAACATTT-TCTTATTCTCCACCGC--TGAGCYCAGGATGAT\n" "L_dorsa TATG-TCCCAACATTT-TCTTATTCTCCACCGC--TGAGCCCAGGATGAT\n" "L_rufic TATG-TCCCAACATCT-CCTTATTTTCCACCGC--TGAGCCCAGGATGAT\n" "Lepi_ja TATG-TCCCATCATTT-TCTTATTCTCCACTGC--TGAGCCCAGGATGAT\n" "Microce -ATA-TCCCAACATTT-ACTTATTCTCCACCAC--TAAGCCCAGGATGAC\n" "Microce ??????????????????????????????????????????????????\n" "Mirza_z TATA-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCCAGGATGAC\n" "Chei_me -ATGTCCCCAACATCT----CATTCTCCACCAC--TGAGCCCAGGATGAC\n" "P_ver_c ??????????????????????????????????????????????????\n" "P_verre TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGYCTGGGATGAC\n" "P_tatte TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCTGGGATGAC\n" "P_diade TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCCGGGATGAC\n" "P_edwar TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCCGGGATGAC\n" "Avahi_l TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCCGGGATGAC\n" "Eulem_r TATG-TCCCAAYATCT-CCTTATTCTCCACCAC--TGAGCCCGGGATGAC\n" "E_colla TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCCGGGATGAC\n" "Eul_ful TAKG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCGGGGATGAC\n" "E_albif TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCSGGGATGAC\n" "E_sanfo TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCGGGGATGAC\n" "Eul_Mon TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCCGGGATGAC\n" "Eul_mac TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCCGGGATGAC\n" "EuMac_f TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TTAGCCCGGGATGAC\n" "E_coron TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCCGGGATGAC\n" "E_rubri TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCCGGGATGAC\n" "H_occid TATG-TCCCAAAAACT-CCTTATTCTCCACCAC--TGAGCCCAGGATGAC\n" "H_grise TATG-TCCCAAAAACT-CCTTATTCTCCACCAC--TGAGCCCAGGATGAC\n" "L_catta TATG-TCCCAACAACT-CCTTATTCTCCACCAC--TGAGCCCAGGATGAC\n" "Vv_vari TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCCAGGATGAC\n" "Vv_rubr TATG-TCCCAACATCT-CCTTATTCTCCACCAC--TGAGCCCAGGATGAC\n" "Daubent ??????????????????????????????????????????????????\n" "N_benga TATG-TCTCCACAGCT--CCTATTCTCTACCACAGTAAGCCCA-------\n" "N_couca TATG-TCTCCACAGCT--CCTATTCTCTACCACAGTAAGCCCA-------\n" "N_pygma TGTG-TCTCACCATCT-TCCTACTCTCCACTGCACTGAACCCACAATGAC\n" "L_tardi ??????????????????????????????????????????????????\n" "ArctoC_ TGTG-TCTCCCCATCT--CCTATTCTC---------TAACACACTAAGCC\n" "Perodic TATG-TCTCCACATCT--CCCATTCTCTAACACACTAAGCCCA-------\n" "O_garne ??????????????????????????????????????????????????\n" "O_crass TATG-TCTCCACACCT--CCTATTCTCTACCACAATAAGCCCA-------\n" "G_Galag ??????????????????????????????????????????????????\n" "G_seneg ??????????????????????????????????????????????????\n" "G_thoma TATG-TCTCCACACCT--CCTATTCTCTACCACACTAAGCCCA-------\n" "Galeopt ??????????????????????????????????????????????????\n" "Cynocep ??????????????????????????????????????????????????\n" "Tupa_gl ??????????????????????????????????????????????????\n" "Tupa_mi ??????????????????????????????????????????????????\n" "rabbitr ??????????????????????????????????????????????????\n") matches = re.finditer(regex, test_str, re.MULTILINE) for matchNum, match in enumerate(matches, start=1): print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group())) for groupNum in range(0, len(match.groups())): groupNum = groupNum + 1 print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.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