From 0ae9d1808cf4db850f28ad9cfa837506bfec9588 Mon Sep 17 00:00:00 2001
From: boom-jumper <56831966+boom-jumper@users.noreply.github.com>
Date: Thu, 27 May 2021 20:37:53 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A00150=E9=80=86=E6=B3=A2?=
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---
 problems/0150.逆波兰表达式求值.md | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/problems/0150.逆波兰表达式求值.md b/problems/0150.逆波兰表达式求值.md
index e38bc1a3..c8b0da08 100644
--- a/problems/0150.逆波兰表达式求值.md
+++ b/problems/0150.逆波兰表达式求值.md
@@ -224,6 +224,22 @@ var evalRPN = function(tokens) {
 };
 ```
 
+python3
+
+```python
+def evalRPN(tokens) -> int:
+    stack = list()
+    for i in range(len(tokens)):
+        if tokens[i] not in ["+", "-", "*", "/"]:
+            stack.append(tokens[i])
+        else:
+            tmp1 = stack.pop()
+            tmp2 = stack.pop()
+            res = eval(tmp2+tokens[i]+tmp1)
+            stack.append(str(int(res)))
+    return stack[-1]
+```
+
 
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