Python replace related question?

Question

Python

I need to write some code to change the text [b] and [/b] into <.b> and <./b> directly.
I used the replace function, but only one pair of these tags can be changed there.
That is, I wrote like this:
stroka = input()
new_stroka = stroka.replace("[b]", "<.b>", '[/b]', '<./b>')
print(new_stroka) , but this is a mistake.
stroka = input()
new_stroka = stroka.replace("[b]", "<.b>")
new_stroka = stroka.replace("[/b]", "<./b>")
print(new_stroka) , but in this case, only the second line changes, it ignores the first one,
Who knows how this can be implemented, help.

Answer 1

stroka = '[b]ew f  f sd fa sd fasdfasdf[/b]'
stroka.replace("[b]", "<.b>").replace("[/b]", "<./b>")

'<.b>ew f f sd fa sd fasdfasdf<./b>'