first_attempt.py

import math

cipher_text = 'IPAXACQBNEGDEORTHBPFCVDIUIPCIAXTTNHXBRPDXTZVIKXIZBBDNOATVEXTHDNFCAAKXTNHDXCXIPTKBKHDXTXZKBHNGHMICXUIIPCEBNXGXSZBUIWXBRPDRTKANHCSIVRODNZVAZEVLKADINFLILCDXTOBXZAVZAIWAZEHIPAXCXENXLNZCANSPLCBNSGYBDDGNSGYBDXTNECYCDAKVRCVPUXKAZIVCYCMZNSRQAKRKDHAXTVESNEAVAIPACXTBNIAQBNBAKXTVXDAQGXTXAIPCSQBOELARVXOCXGKXAEDTIAZKTCIKDDLBRGHGTTYAXBQFANOELDBDKVAXTAZRBAZAVCAMCNOSCAVZLXTBRHKXTATCBAXLNVZDTIPNOEYAZKVCUUENSGYBDAZBRIPXZXTXSXADBDAAZAHCIRQHAXTSCCYNDHAVAVNLWGTAZIKQRAZBRIPXZNBGZNOTYLTCIADHAXTGAELZBBDNOAKXTPCYNVENBKDAKSBDKPVDLVAKNIADGNSGYBDANLZRXHNPXKDCAELZBBDIPXABQGTIAXTAHTBAZRBUIIPKXNZRBNOELNUBPDAAZBUIPDCTAADHNIAVAXTZGDNNLZBBDATFARVCDAZKARBVAFRNECWPIAVAVTKNDVENOEZKTHADAAVRQCYNZPFAXKNIAAZKPXTCOXTBKVXDNWKDRENBRXGVEXTBRZBIPAXCSDBDTBXDTEVFHCTUWBRPDXTPULANSGYBDNOAKXTRVCQCXRVQAZVRTYAIPTKVXDCVZIPAXRQVAUIBELAOEKAQBCOLKADINFLBVIAXTYUSRRBAZEHIPACEOAHNOECIPUIPXTBGTCAEYAZEHIPTXQNXCPFNHCDATBRCIAKBQRBIPXADKLPCXNOAYVZCXNZMUHDFHQNPXIPDTNHAZKARBVAFRXKIDEOUHVXKGAXCEVNCBIWUINADNNZROAZEHIPACRBIPNOEZQNIPPULAZGDKPFAXDKXTRVCQCXAVZANSGYBDNOLDTATCEHIPCGCGENEIACKDBRHKXTLXLNRODAVAUIIPDGLTLZASRKLXLNRODKXTTNHNXEACAXDNZMVEUNNLZBBDWNEHIPCEXATKBHCXQCXAQRIPKGUIAZCASTHRVCADQRIPTXQNXCBNCVDAVIIWPVPXAXNOTYCPXTXNZBBDCIIVNUKPEOTKIPTSAXHDVBQRIPCSXLNZCANOAKXTXAVIXABDUIDANOKMEONEHYHNDAPLCDOELAPLCDOEBKRDXCEOUNRDZXQNNSCNELNBHRKRDTIPAXAZIVKPEOSTHRATFANSGYBDNOAKXTPULARVMUDARVHYHNMNRDBRCITYAXNSGYBDWNKARBVAFRRQCIEZXTBKOXLTUIWSCUKDDTVCZMAZKTHKAXIPKXNHVEXKGFPFNHCZNBQNLANSGYBDNOAZCAVAXTHALPKGXTIAXTRVCQDKVTGTAMTAZMNSGYBDVXKXDCKTVCXQXTGKXAGAUIBXSNEDEMACDIXLZBBDNUEDNANAHLONNXTACDAZEHAVAVTLALVANUEDVIAZIPAXNONAQNEHIPAXSRZBNSGYBDORPFAXCSZBBDORPKXTXANSGYBDANFAUIMCQNLZRMIKAZBRIPXZTKFQVICXIVCYNZIAXTYUSRRBNOKMTNKDAKVZCGKGRTKPQNZLRTGHGTLAVAROSCAVAVBSEHAVRODTHAXTVBACAHTBAZRBNSGYBDNOKYDCNUONLATKHUXOEHIPDCVIDICENHIDRVCWPIVXTXTANZVEPVDLVAWNEVSRROVXCXKBROASXFCVDTXOVEULTUCBIWIPBRCWPIXTRVCDNSGYBDRQHAXTVEBRCBBHCXQCXAQRIPDTNHBKQECGTGUIPXLPIWZVIPTKXTNSCNALVARKCYZLVAVXCSXATIAVIPTXZNCSZBBDNECWPIAVAVMRIPCGDTXNZBBDNOEYAYEBECTYLPUIAVIPAXSRZBEBTNILZBBDKRKDFBNBELNZVCCBIPDKBNMTSRRBZVIPTKORBZXAENLUADIAXSQNZLRTGHGTLAVARVNFKRKDHFQNHBEOXCATBKXLZBBDNOEZNZMUMLRBVAFRBSAVSTHFAXXHCPPIWNEVXTXKIDFQVIDCRODCXLZBBDNOAKXTPULAVXHNDEDAZVNZLKZMDNNDARIKXTHARTEVXTCANBZMGANEGDADKRAZKTKHNHVEVXTXTABQLAAXDAUHVXKGQNZLGAATVXDAAVTVCSCXPFACIPTXQNXCXKCYNDBEUIWNKTVEXTRVNFVGEOXCATLAORIPUIPEAXHNMNTXTBGTCAELZBBDVXCXAVGHGTKMRBHRUIBELAXAZVIZDAAVBKVINEZDZMNOEZCGKGRTEHIPKXIKNFKGQNZLABUIMEVATKNDVEVXCSBNMUDAVQAXIPCXBKHLCBYUSRRBAVXTBADANSGYBDNOLZDRAZBUIWROVINOAKVAQRZNNZGKATLANDMLQBOACXLTTXAXAZIVCOTVKDQRIPCXBKHLCBQRIPTXQNXCNOAKXTBKUNUIBSHKXTPULANSGYBDAZBRIPXZSRROLNVZDAXTXAXDOELAXKCYUYEOKTZCCGTG'

char_dict = {}

for i in range(math.floor(len(cipher_text) / 2)):
    pair_x = cipher_text[2*i: 2*i +2]
    if pair_x in char_dict:
        char_dict[pair_x] += 1
    else:
        char_dict[pair_x] = 1


# https://stackoverflow.com/questions/613183/how-do-i-sort-a-dictionary-by-value
sorted_dict = {k: v for k, v in sorted(char_dict.items(), key=lambda item: item[1])}


print(sorted_dict)