Merge pull request #137 from LiangDazhu/patch-7

添加 0134.加油站 python版本

problems/0134.加油站.md

@@ -223,7 +223,21 @@ class Solution {
 ```
 
 Python：
-
+```python
+class Solution:
+    def canCompleteCircuit(self, gas: List[int], cost: List[int]) -> int:
+        start = 0
+        curSum = 0
+        totalSum = 0
+        for i in range(len(gas)):
+            curSum += gas[i] - cost[i]
+            totalSum += gas[i] - cost[i]
+            if curSum < 0:
+                curSum = 0
+                start = i + 1
+        if totalSum < 0: return -1
+        return start
+```
 
 Go：
 
@@ -234,4 +248,4 @@ Go：
 * 作者微信：[程序员Carl](https://mp.weixin.qq.com/s/b66DFkOp8OOxdZC_xLZxfw)
 * B站视频：[代码随想录](https://space.bilibili.com/525438321)
 * 知识星球：[代码随想录](https://mp.weixin.qq.com/s/QVF6upVMSbgvZy8lHZS3CQ)
-<div align="center"><img src=../pics/公众号.png width=450 alt=> </img></div>
+<div align="center"><img src=../pics/公众号.png width=450 alt=> </img></div>