How to replace a double backslash with a single backslash in python?

Question

I have a string. In that string are double backslashes. I want to replace the double backslashes with single backslashes, so that unicode char codes can be parsed correctly.

(Pdb) p fetched_page
'<p style="text-align:center;" align="center"><strong><span style="font-family:\'Times New Roman\', serif;font-size:115%;">Chapter 0<\\/span><\\/strong><\\/p>\n<p><span style="font-family:\'Times New Roman\', serif;font-size:115%;">Chapter 0 in \\u201cDreaming in Code\\u201d give a brief description of programming in its early years and how and why programmers are still struggling today...'

Inside of this string, you can see escaped unicode character codes, such as:

\\u201c

I want to turn this into:

\u201c

Attempt 1:

fetched_page.replace('\\\\', '\\')

but this doesn't work -- it searches for quadruple backslashes.

Attempt 2:

fetched_page.replace('\\', '\')

But this results in an end of line error.

Attempt 3:

fetched_page.decode('string_escape')

But this had no effect on the text. All the double backslashes remained as double backslashes.

Answer 1

You can try codecs.escape_decode, this should decode the escape sequences.