python新行（字节到字符串）

Question

Code:

word="hello\nhai"
fout=open("sample.txt","w");
fout.write(word);

Output:

hello
hai

But this:

word=b"hello\nhai"
str_word=str(word)                     # stripping ' '(quotes) from byte
str_word=str_word[2:len(str_word)-1]   # and storing just the org word
fout=open("sample.txt","w");
fout.write(str_word);

Outputs:

hello\nhai

What is the problem in the code?

I am working on sending and receiving strings over a port in python. As only bytes can be sent and received I have the above problem. But why does it occur?

Answer 1

Write the bytes in binary mode:

word=b"hello\nhai"
with open("sample.txt","wb") as fout:
    fout.write(word);

You can also encode the original string to bytes:

word="hello\nhai".encode()