auto save

2-14-diy4.py

+class Hero:
+    def __init__(self, name, hp, attack):
+        self.level = 1
+        self.name = name      # name:名字
+        self.hp= hp
+        self.attack= attack     # attack：攻击
+        
+    def upgrade(self):
+        self.level=self.level+1
+        self.hp = self.hp + 50
+        self.attack = self.attack + 4
+
+houyi = Hero("后羿",240,23)
+houyi.upgrade()
+print("等级为：",houyi.level)
+print("血量为：",houyi.hp)
+print("攻击力为：",houyi.attack)
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diy3.py

+# 完成修改数据前的遍历和条件判断，找下'小强：10本'在不在数据中，以及小兰的数据'小兰：12本'在不在
+with open(r'C:\Users\Makcoo\Desktop\新建文本文档.txt','r',encoding='utf-8') as file1:
+    # for data in file1:
+    #     if '小强：10本' in data:
+    #         print('小强数据在文件中')
+    #     if '小兰：12本'in data:
+            # print('小兰数据在文件中')
+     
+        print(file1)
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diy4.py

+# 修改小强的数据为11本，以及小兰的数据'小兰：12本'修改为14本，最后读取修改后的数据
+new_data=''
+with open(r'C:\Users\CM\Desktop\book.txt','r',encoding='utf-8') as file1:
+    for data in file1:
+        if '小强：10本'in data:
+            data=data.replace('小强：10本','小强：11本')
+        if '小兰：12本'in data:
+            data=data.replace('小兰：12本','小兰：14本')
+        new_data +=data
+
+with open(r'C:\Users\CM\Desktop\book.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
+
+with open(r'C:\Users\CM\Desktop\book.txt','r',encoding='utf-8') as file1:
+    a=file1.read()
+    print(a)