Merge pull request #599 from shuwenlan/master

添加 0383.赎金信.md Python3版本

problems/0383.赎金信.md

@@ -209,6 +209,22 @@ class Solution(object):
         return True
 ```
 
+Python写法四：
+
+```python3
+class Solution:
+    def canConstruct(self, ransomNote: str, magazine: str) -> bool:
+        c1 = collections.Counter(ransomNote)
+        c2 = collections.Counter(magazine)
+        x = c1 - c2
+        #x只保留值大于0的符号，当c1里面的符号个数小于c2时，不会被保留
+        #所以x只保留下了，magazine不能表达的
+        if(len(x)==0):
+            return True
+        else:
+            return False
+```
+
 Go：
 
 ```go