Python how to replace backslash with re.sub()

Question

I have the following string

mystr1 = \'mydirname\'
myfile = \'mydirname\\myfilename\'

I\'m trying to do this

newstr = re.su         


        

Answer 1

In a regular expression, you can escape a backslash just like any other character by putting a backslash in front of it. This means "\\" is a single backslash.

Answer 2

You need a quadruple backslash:

newstr = re.sub(mystr1 + "\\\\", "", myfile)

Reason:

• Regex to match a single backslash: \\
• String to describe this regex: "\\\\".

Or you can use a raw string, so you only need a double backslash: r"\\"