This is proving to be a rough transition over to python. What is going on here?:
f = open( 'myfile', 'a+' ) f.write('test string' + '\n') key = "pass:hello" plaintext = subprocess.check_output(['openssl', 'aes-128-cbc', '-d', '-in', test, '-base64', '-pass', key]) print (plaintext) f.write (plaintext + '\n') f.close() The output file looks like:
test string
and then I get this error:
b'decryption successful\n' Traceback (most recent call last): File ".../Project.py", line 36, in <module> f.write (plaintext + '\n') TypeError: can't concat bytes to str 4 Answers
subprocess.check_output() returns a bytestring.
In Python 3, there's no implicit conversion between unicode (str) objects and bytes objects. If you know the encoding of the output, you can .decode() it to get a string, or you can turn the \n you want to add to bytes with "\n".encode('ascii')
subprocess.check_output() returns bytes.
so you need to convert '\n' to bytes as well:
f.write (plaintext + b'\n') hope this helps
You can convert type of plaintext to string:
f.write(str(plaintext) + '\n') f.write(plaintext) f.write("\n".encode("utf-8")) 
