From c9a4509fcc82fbac8a9060bd81ff196ea56b6efc Mon Sep 17 00:00:00 2001
From: gavin <2861484755@qq.com>
Date: Sat, 1 Apr 2017 15:30:17 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8Dbug=EF=BC=9A=E7=9B=B4?=
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---
 calc.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/calc.py b/calc.py
index e7c6b9e..bffda30 100644
--- a/calc.py
+++ b/calc.py
@@ -71,7 +71,8 @@ class Calc(QMainWindow):
                 else:#无y
                     if value != '0':
                         self.y = value
-                self.text_result.setText(self.y)
+                if self.y is not None:
+                    self.text_result.setText(self.y)
 
             else:#无运算符
                 if self.x is not None:#有x
@@ -80,7 +81,8 @@ class Calc(QMainWindow):
                 else:
                     if value != '0':
                         self.x = value
-                self.text_result.setText(self.x)
+                if self.x is not None:
+                    self.text_result.setText(self.x)
 
         
         # 开始处理运算符
-- 
Gitee