From ce1a80b0166b8f37c03c3ed867dc6d89279f345a Mon Sep 17 00:00:00 2001
From: jojoo15 <75017412+jojoo15@users.noreply.github.com>
Date: Thu, 27 May 2021 18:01:48 +0200
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=200078.=E5=AD=90=E9=9B=86=20?=
 =?UTF-8?q?python3=E7=89=88=E6=9C=AC?=
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添加 0078.子集 python3版本
---
 problems/0078.子集.md | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/problems/0078.子集.md b/problems/0078.子集.md
index 17c4fb5c..0b2f3c09 100644
--- a/problems/0078.子集.md
+++ b/problems/0078.子集.md
@@ -205,7 +205,20 @@ class Solution {
 ```
 
 Python：
-
+```python3
+class Solution:
+    def subsets(self, nums: List[int]) -> List[List[int]]:
+        res = []  
+        path = []  
+        def backtrack(nums,startIndex):
+            res.append(path[:])  #收集子集，要放在终止添加的上面，否则会漏掉自己
+            for i in range(startIndex,len(nums)):  #当startIndex已经大于数组的长度了，就终止了，for循环本来也结束了，所以不需要终止条件
+                path.append(nums[i])
+                backtrack(nums,i+1)  #递归
+                path.pop()  #回溯
+        backtrack(nums,0)
+        return res
+```
 
 Go：
 ```Go