Python programming: Number of occurrences of words in a statistical file

F=open ("2.txt", ' R ')
Ll=f.read ()
"' Replace the space with a comma to facilitate the split ()
ll=ll.replace ("", ', ')
"' prevents the case of double commas due to the non-specification of document editing"
Ll=ll.replace (",,", ', ')
l=ll.split ("\ n")
rows=[]
dic={}
For i in L:
row=i.split (",")
rows.append (Row)
For II in rows:
For each in II:
if each in dic:
dic[each]=dic[each]+1
Else:
dic[each]=1

#输出所有的排序:
print (sorted (Dic.items (), Key=lambda x:x[1],reverse=true))

" output the maximum value only"
highvalue=0
Highkey=none
For each in DIC:
if Dic[each]>highvalue:
Highvalue=dic[each]
Highkey=each
print (Highkey,highvalue)

Python programming: Number of occurrences of words in a statistical file