Hướng dẫn python read byte array

There is a file with following contents:

b'prefix:input_text'
b'oEffect:PersonX \xd8\xaf\xd8\xb1 \xd8\xac\xd9\x86\xda\xaf ___ \xd8\xa8\xd8\xa7\xd8\xb2\xdb\x8c \xd9\x85\xdb\x8c \xda\xa9\xd9\x86\xd8\xaf'
b'oEffect:PersonX \xd8\xaf\xd8\xb1 \xd8\xac\xd9\x86\xda\xaf ___ \xd8\xa8\xd8\xa7\xd8\xb2\xdb\x8c \xd9\x85\xdb\x8c \xda\xa9\xd9\x86\xd8\xaf'

This is my try to read the lines and convert them to readable utf characters, but still it shows the same strings in the output file:

f = open[input_file, "rb"]
for x in f:
  inpcol.append[x.decode['utf-8']]

f = open[pred_file, "r"]
for x in f:
  predcol.append[x]

f = open[target_file, "r"]
for x in f:
  targcol.append[x]
data =[]
for i in tqdm[range[len[targcol]]]:
  data.append[[inpcol[i],targcol[i],predcol[i]]]

pd.DataFrame[data,columns=["input_text","target_text","pred_text"]].to_csv[f"{path}/merge_{predfile}.csv", encoding="utf-8"]
print["Done!"]

The output file is:

,input_text,target_text,pred_text
0,"b'prefix:input_text'
","target_text
","ﺏﺭﺎﯾ ﺩﺮﮐ ﻮﻀﻌﯿﺗ
"
1,"b'xNeed:PersonX \xd8\xaf\xd8\xb1 \xd8\xac\xd9\x86\xda\xaf ___ \xd8\xa8\xd8\xa7\xd8\xb2\xdb\x8c \xd9\x85\xdb\x8c \xda\xa9\xd9\x86\xd8\xaf'
","ﺞﻨﮕﯾﺪﻧ
","ﺏﺭﺎﯾ ﭗﯾﺩﺍ ﮎﺭﺪﻧ ﯽﮐ ﺖﯿﻣ
"

As you see, the problem exists for input line but not for target and prediction lines [however scrambled but that's okay]