reg cmd with desc - maintain together if so ..

spug_api/manage.py

@@ -5,6 +5,7 @@ import sys
 import os
 
 commands = {}
+commands_desc = {}
 
 
 # 工具函数
@@ -26,9 +27,10 @@ def check_input_username(username):
 
 
 # 注册命令
-def registry_command(cmd_str):
+def registry_command(cmd_str, cmd_desc=''):
     def decorate(func):
         commands[cmd_str] = func
+        commands_desc[cmd_str] = cmd_desc
 
         @wraps(func)
         def wrapper(*args, **kwargs):
@@ -37,7 +39,7 @@ def registry_command(cmd_str):
     return decorate
 
 
-@registry_command('init_db')
+@registry_command('init_db', '初始化数据库')
 def init_db():
     from public import db
     from config import BASE_DIR
@@ -64,7 +66,7 @@ def init_db():
             create_admin()
 
 
-@registry_command('create_admin')
+@registry_command('create_admin', '创建管理员账户')
 def create_admin():
     from apps.account.models import User
 
@@ -84,7 +86,7 @@ def create_admin():
         print('创建管理员账户成功！')
 
 
-@registry_command('enable_admin')
+@registry_command('enable_admin', '启用管理员账户，用于登录失败次数过多账户被禁用时使用')
 def enable_admin():
     from apps.account.models import User
 
@@ -94,14 +96,14 @@ def enable_admin():
 
 
 def print_usage():
-    print('''
+    cmd_desc_str = '''
 usage: %s <command>
 
 command:
-    init_db         初始化数据库
-    create_admin    创建管理员账户
-    enable_admin    启用管理员账户，用于登录失败次数过多账户被禁用时使用
-    ''' % sys.argv[0])
+    '''
+    for k in commands_desc.keys():
+        cmd_desc_str += '\t{0}\n\t\t-- {1}\n'.format(str(k), str(commands_desc.get(k) if commands_desc.get(k) else ''))
+    print(cmd_desc_str % sys.argv[0])
 
 
 if __name__ == '__main__':