Code works but doesn't get pass the 'check'
def f(x) : if len(x) >10e5 : return 'sentence is extremely long' x=x.lower() l=[] d={} for u in x: if u in 'aqwertyuioplkjhgfdszxcvbnm' : l.append(u) d[u] =0 for i in l : d[i] +=1 a=[[i, d[i]] for i in d] a.sort(key=lambda x:x[1], reverse=True) for i in a: return i[0]
It works with all the assert statements but doesn't get pass the check Please fix