diff --git a/PythonDemo/class_test.py b/PythonDemo/class_test.py
new file mode 100644
index 0000000..fadf7aa
--- /dev/null
+++ b/PythonDemo/class_test.py
@@ -0,0 +1,36 @@
+user1 = {'name': 'tom', 'hp': 100}
+user2 = {'name': 'jerry', 'hp': 80}
+
+
+def print_role(rolename):
+    print('name is %s, hp is %s' % (rolename['name'], rolename['hp']))
+
+
+print_role(user1)
+
+
+class Player():     # 定义一个函数
+    def __init__(self, name, hp, occ):
+        self.__name = name # 下划线开头的属性只能通过方法访问和修改
+        self.hp = hp
+        self.occ = occ
+
+    def print_role(self):
+        print('%s: %s  %s' % (self.__name, self.hp, self.occ))
+
+    def update_name(self,new_name):
+        self.__name = new_name
+
+
+class Monster():
+    '定义怪物类'
+    pass
+
+
+user1 = Player('tom', 100, 'war') # 类实例化
+user2 = Player('jerry', 90, 'master')
+user1.print_role()
+user2.print_role()
+
+user1.update_name('wilson')
+user1.print_role()
diff --git a/PythonDemo/mod_test.py b/PythonDemo/mod_test.py
new file mode 100644
index 0000000..d09a3b0
--- /dev/null
+++ b/PythonDemo/mod_test.py
@@ -0,0 +1,18 @@
+import  mymod
+
+mymod.print_me()
+
+
+#
+# brew install autopep8 或者 pip install autopep8
+# 打开PyCharm
+#
+# File → Settings → Tools → External Tools → +
+#
+# 配置参数
+#
+# Name: autopep8
+# Program: autopep8
+# Arguments: --in-place --aggressive --aggressive $FilePath$
+# Working directory: $ProjectFileDir$
+# Output filters: $FILE_PATH$\:$LINE$\:$COLUMN$\:.*
diff --git a/PythonDemo/mymod.py b/PythonDemo/mymod.py
new file mode 100644
index 0000000..563ed65
--- /dev/null
+++ b/PythonDemo/mymod.py
@@ -0,0 +1,2 @@
+def print_me():
+    print('me')
\ No newline at end of file
diff --git a/PythonDemo/sanguo.py b/PythonDemo/sanguo.py
index d63ee2c..e127511 100644
--- a/PythonDemo/sanguo.py
+++ b/PythonDemo/sanguo.py
@@ -20,4 +20,5 @@
 def func(filename):
     print(open(filename).read())
 
+
 func('name.txt')
diff --git a/PythonDemo/sanguo_v3.py b/PythonDemo/sanguo_v3.py
index 7a26b90..d7d8229 100644
--- a/PythonDemo/sanguo_v3.py
+++ b/PythonDemo/sanguo_v3.py
@@ -40,5 +40,8 @@ def find_main_charecters(main_charecters):
             weapon_dict[weapon_name] = weapon_number
         i += 1
 
-weapon_sorted = sorted(weapon_dict.items(), key=lambda item: item[1], reverse=True)
+weapon_sorted = sorted(
+    weapon_dict.items(),
+    key=lambda item: item[1],
+    reverse=True)
 print(weapon_sorted)