Python exception handling question

Am I using try/except correctly? Am I missing any try/excepts i could be using? (sorry if you have to zoom in to see the coding)

Ey: in filesopan ("grades.txt out_rile-open("grades except TOError: rint ("Bzzor opening/reading 11e") EY: 12 or line in in file linc-line.ratript Le out rile.wrile("An elif outtilc.vrital"Rin out ile.write("n 26 20 30 out tile.write!Dn 6156 out file.writel"gtn" out file.write" out_rile.write ("A: for i in range (a): 24 35 out rile.write else try