python 3.x - ord function doesn't work -

file_ascii = [(ord(c)) c in contents] f_file = [] x in range (0, len(file_ascii)):      if file_ascii[x] != 32:         file_ascii2 = (file_ascii[x])         file_ascii2 = (offset) + (file_ascii2)         if file_ascii2 > 126:             file_ascii2 = (file_ascii2) - 94     print (file_ascii2)     file_ascii2 = [(chr(i)) in file_ascii2]     f_file.append(file_ascii2) 

everything in list 'contents' supposed turned equivalent ascii code. when 'file_ascii2' turned normal letters, of normal letter, thought has been added , subtracted already. when code run with

file_ascii2 = [(chr(i)) in file_ascii2] 

as comment, 'file_ascii2' proven integers

you never changed elements in file_ascii list. changed variable file_ascii2. need assign list changes reflected there:

if file_ascii[x] != 32:     file_ascii2 = (file_ascii[x])     file_ascii2 = (offset) + (file_ascii2)     if file_ascii2 > 126:         file_ascii2 = (file_ascii2) - 94     file_ascii[x] = file_ascii2 

or directly append chr() result number f_file list.

you should use better names variables; file_ascii list of numbers representing characters, file_ascii2 one such number, list comprehension trying use for loop on number fail.

cleaning code little, without changing technique, results in:

file_ascii = [ord(c) c in contents] f_file = [] index in range(0, len(file_ascii)):      codepoint = file_ascii[index]     if codepoint != 32:         codepoint += offset         if codepoint > 126:             codepoint -= 94     f_file.append(chr(codepoint)) 

it'd easier loop on contents , convert each character integer in loop:

f_file = [] character in contents:     codepoint = ord(character)     if codepoint != 32:         codepoint += offset         if codepoint > 126:             codepoint -= 94     f_file.append(chr(codepoint))