Right-to-left string replace in Python?

Question

I want to do a string replace in Python, but only do the first instance going from right to left. In an ideal world I\'d have:

myStr = \"mississippi\"
print          


        

Answer 1

You could also use str.rpartition() which splits the string by the specified separator from right and returns a tuple:

myStr = "mississippi"

first, sep, last = myStr.rpartition('iss')
print(first + 'XXX' + last)
# missXXXippi