John O'Hagan: > li=['a', 'c', 'a', 'c', 'c', 'g', 'a', 'c'] > for i in range(len(li)): > if li[i:i + 2] == ['a', 'c']: > li[i:i + 2] = ['6']
Oh well, I have done a mistake, it seems. Another solution then: >>> 'acaccgac'.replace("ac", chr(6)) '\x06\x06cg\x06' Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list