There is a place in the regular expression in the following code that I can't understand ：
line=getline()d={
'reset':'reset what','reset board':'board fault','board add':'where to add','board delete':'no board at all','reboot backplane':'impossible','backplane abort':'install first'}while line: if len(line.split(" ")) == 1: n=0 for k in d.keys(): if re.match("^%s.*"%line, k):# Here line Previous % What do you mean by that? , In the ....In the last line of the above code line Previous % What do you mean by that? , In the
