Converts file from Kamenický encoding/KEYBCS2/CP895, a legacy Czechoslovak encoding, to system Unicode. Not even iconv supports this!

conv_cp895.py

#!/bin/python3

from sys import argv

highchars = 'üéďäĎŤčěĚĹÍľĺÄÁÉžŽôöÓůÚýÖÜŠĽÝŘťáíóúňŇŮÔšřŕŔ¼§«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■'

out = ""

with open(argv[1], 'rb') as f: 
    for byte in f.read():
        if byte < 128:
            out += chr(byte)
        else:
            out += highchars[byte-129]

print(out)

Nice, but I think that you're missing character 'Č' at position 128, that will therefore be translated to highchars[-1]