How to read byte type string from text file

Question

I have a txt file. And this file's content is a byte type, like this

b'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">\r\n<html xmlns="http://www.w3.org/1999/xhtml">\r\n<head>\r\n<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />\r\n<!--<META http-equiv=Page-Enter content=blendTrans(Duration=0.5)>\r\n<META http-equiv=Page-Exit content=blendTrans(Duration=0.5)> -->\r\n<title>\xba...'

How can I translate it into

value = b'...'  # txt file content

Answer 1

You can use ast.literal_eval() to evaluate the bytes literal:

bytesobject = ast.literal_eval(filecontents)

Demo:

>>> import ast
>>> foo = "b'bytes value as a literal'"
>>> type(foo)
<class 'str'>
>>> ast.literal_eval(foo)
b'bytes value as a literal'
>>> type(ast.literal_eval(foo))
<class 'bytes'>

However, it would be much better if you could just fix the source of the error, which is the code that created that file in the first place. Presumably that code used str() on a bytes value to write the data to a text file, where it should instead have opened a file in binary mode.

How to read byte type string from text file

Question

1 answers

solution1
2 ACCPTED 2018-06-17 10:52:24

How to read byte type string from text file

Question

1 answers

solution1 2 ACCPTED 2018-06-17 10:52:24

solution1
2 ACCPTED 2018-06-17 10:52:24