python=35讲，15.1 EgStore，实践中报错，咋整？？

欣欣celin

1. #^^^^^^^^^^^^
   
2. #creat 'settings', a persistent settings object
   
3. #note that the 'filename' argument is required
   
4. #the directory for the persistet file must already exist
   
5. #^^^^^^^^^^^^
   
6. import os
   
7. import easygui as g
   
8. settingsFilename = os.path.join('E:','FishCApp','settings.txt')    #windows example
   
9. settings = settings(settingsFilename)
   
10. 
    
11. #we initialize the 'user' and 'server' variables
    
12. #in a real application, we'd probaly have the user enter them via enterbox
    
13. user = 'Obama'
    
14. server = 'WhiteHouse'
    
15. #we save the variables as attriutes of the 'settings' object
    
16. settings.userId = user
    
17. settings.targetServer = server
    
18. settings.store() #persist the settings
    
19. #run code that gets a new value for userId
    
20. #then persist the settings with the new value
    
21. user = 'cc'
    
22. settings.userId = user
    
23. setting.srore()

复制代码

wei_Y

第九行，settings = settings(settingsFilename)没有定义过settings不能这样写啊。十六行，字符串没有userID这个对象。

十七行，也没有targetServer这个对象。
十八行，也没有.store()这个对象。


这些要用的话应该建立一个类
class settings:
      userID =
      targetServer =
      def store(self):
                pass

欣欣celin

wei_Y 发表于 2014-9-6 21:17
第九行，settings = settings(settingsFilename)没有定义过settings不能这样写啊。十六行，字符串没有userI ...

#^^^^^^^^^^^^
#creat 'settings', a persistent settings object
#note that the 'filename' argument is required
#the directory for the persistet file must already exist
#^^^^^^^^^^^^
import os
import easygui as g

#we initialize the 'user' and 'server' variables
#in a real application, we'd probaly have the user enter them via enterbox
user = 'Obama'
server = 'WhiteHouse'

class settings:
    userId = user
    targetServer = server
    def store(self):
        pass

settingsFilename = os.path.join('E:','FishCApp','settings.txt') #windows example
settings = settings(settingsFilename)


#we save the variables as attriutes of the 'settings' object
settings.userId = user
settings.targetServer = server
settings.store() #persist the settings
#run code that gets a new value for userId
#then persist the settings with the new value
user = 'cc'
settings.userId = user
settings.srore()


还是报错：
TypeError: object() takes no parameters

wei_Y

欣欣celin 发表于 2014-9-6 21:35
#^^^^^^^^^^^^
#creat 'settings', a persistent settings object
#note that the 'filename' argume ...

- -。我那个就是个例子，函数里你别写pass啊。。。

欣欣celin

wei_Y 发表于 2014-9-6 22:06
- -。我那个就是个例子，函数里你别写pass啊。。。

#^^^^^^^^^^^^
#creat 'settings', a persistent settings object
#note that the 'filename' argument is required
#the directory for the persistet file must already exist
#^^^^^^^^^^^^
import os
import easygui as g

#we initialize the 'user' and 'server' variables
#in a real application, we'd probaly have the user enter them via enterbox
user = 'Obama'
server = 'WhiteHouse'

class settings:
    userId = user
    targetServer = server
    def store(settings):
        #pass

        settingsFilename = os.path.join('E:','FishCApp','settings.txt') #windows example
        settings = settings(settingsFilename)


        #we save the variables as attriutes of the 'settings' object
        settings.userId = user
        settings.targetServer = server
        settings.store() #persist the settings
        #run code that gets a new value for userId
        #then persist the settings with the new value
        user = 'cc'
        settings.userId = user
        settings.srore()

这样，终于可以运行了，但什么都没显示哦

wei_Y

欣欣celin 发表于 2014-9-6 22:20
#^^^^^^^^^^^^
#creat 'settings', a persistent settings object
#note that the 'filename' argument ...

你把下面的整个变成这个类里的方法了，并且没有调用。
调用还是会报错- -。
不过我比较菜，没看懂会运行成啥样。。
还是等版主来吧。。
不好意思没有帮到你。

欣欣celin

wei_Y 发表于 2014-9-6 22:24
你把下面的整个变成这个类里的方法了，并且没有调用。
调用还是会报错- -。
不过我比较菜，没看懂会运 ...

感谢大神的解答，虽然问题还在

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qq213 发表于 2016-11-25 20:04
#!/usr/bin/env python
#-*- coding:utf-8 -*-

还需要吧egstore.py里面的内容修改
def _restore(self):
               with open(self.filename, 'rb') as f:
            
                              store = pickle.load(f)
               for key, value in store.__dict__.items():
                              self.__dict__[key] = value



修改如下：
def _restore(self):
               with open(self.filename, 'rb') as f:
                            try:
                                       store = pickle.load(f)
                            except EOFError:
                                return None

                for key, value in store.__dict__.items():
                            self.__dict__[key] = value