How to delete () using re module in Python

I am in trouble for processing XML text. I want to delete () from my text as follows:

from <b>(apa-bhari(n))</b> to <b>apa-bhari(n)</b>

The following code was made

name= re.sub('<b>\((.+)\)</b>','<b>\1</b>',name)

But this can only returns

<b></b>

I do not understand escape sequences and backreference. Please tell me the solution.开发者_开发问答

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You need to use raw strings, or escape the slashes:

name = re.sub(r'<b>\((.+)\)</b>', r'<b>\1</b>', name)

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You need to escape backslashes in Python strings if followed by a number; the following expressions are all true:

assert '\1' == '\x01'
assert len('\\1') == 2
assert '\)' == '\\)'

So, your code would be

name = re.sub('<b>\\((.+)\\)</b>','<b>\\1</b>',name)

Alternatively, use the regular expression string definition:

name = re.sub(r'<b>\((.+)\)</b>', r'<b>\1</b>',name)

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Try:

name= re.sub('<b>\((.+)\)</b>','<b>\\1</b>',name)

or if you do not want to have an illisible code with \\ everywhere you are using backslashes, do not escape manually backslashes, but add an r before the string, ex: r"myString\" is the same as "myString\\".