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字典的运用：词频统计.py

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+# -*- coding: utf-8 -*-
+"""
+Created on Mon Nov 22 17:19:33 2021
+
+@author: Administrator
+"""
+
+WordStr=input()
+WordStr=WordStr.lower()
+for ch in "\".,~!@#$%^&*()+_\/0123456789":
+    WordStr=WordStr.replace(ch," ")
+print(WordStr)
+#字符分割
+wordlist=WordStr.split()
+print(wordlist)
+#统计词频
+dict1={}
+for word in wordlist:
+    if word not in dict1:
+        dict1[word]=1#创建键值对
+    else:
+        dict1[word]=dict1[word]+1
+print(dict1)        
+#排序
+#new1=sorted(dict1.values(),reverse=True)#sorted函数默认升序排列并且按照ASCII值排列
+#print(new1)
+new2=sorted(dict1.items(),key=lambda d:d[1],reverse=True)#key=lambda d:d[1]对第二维即value进行排序
+print(new2)#排完之后是list类型
+new3=dict(new2)
+print(new3)
+print(max(new3.values()))   
+for key,value in new3.items():#遍历键值
+    if value>=max(new3.values()):
+        print(key,value)
+    
+        
+        
+