Breaking The Substitution Cipher

Here is your homework - A character sub was used. Can you decipher as much of this text as you can? Submit your results in the drop box. You may use Python to code the solution.

ztrfqvdjrzqt rci wzyabi wdmwrzrdrzqt jzacif zw g jzacif rcgr cgw miit zt dwi hqf ygtx cdtvfivw qh xigfw (gt iojibbitr czwrqfx zw lzsit zt wzyqt wztlcw 'rci jqvi mqqk'). zr mgwzjgbbx jqtwzwrw qh wdmwrzrdrztl isifx abgztrior jcgfgjrif hqf g vzhhifitr jzacifrior jcgfgjrif. zr vzhhifw hfqy rci jgiwgf jzacif zt rcgr rci jzacif gbacgmir zw tqr wzyabx rci gbacgmir wczhriv, zr zw jqyabiribx udymbiv.

rci wzyabi wdmwrzrdrzqt jzacif qhhifw sifx bzrrbi jqyydtzjgrzqt wijdfzrx, gtv zr pzbb mi wcqpt rcgr zr jgt mi igwzbx mfqkit isit mx cgtv, iwaijzgbbx gw rci yiwwgliw mijqyi bqtlif (yqfi rcgt wisifgb cdtvfiv jzacifrior jcgfgjrifw).