auto save

1.py

+new_data='' #定义新变量
+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')
+        new_data +=data
+
+with open(r'C:\Users\CM\Desktop\book.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
+

创建英雄角色.py

+class Hero:
+class Hero:
+    def __init__(self):
+        self.level = 1 
+        self.hp= 300     
+        self.attack= 20     # attack：攻击
+
+yase = Hero()
+print("yase的血量值为：",yase.hp)
+print("yase的攻击力为：",yase.attack)
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自定义角色.py

+class Hero:
+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
+
+yase = Hero("垭瑟",300,20)
+houyi = Hero("后羿",240,23)
+print("垭瑟的血量为：",yase.hp)
+print("后羿的血量为：",houyi.hp)
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