我正在研究我的PyTUI应用程序，试图改进某些功能。我似乎陷入了一个非常基本的问题。我在这里搜索并尝试了几个答案，以及阅读许多Pickle教程。
如果我单独保存变量，一切都有效。
我有一个名为quicklaunch_list的列表，其中包含以下变量：
browser_cmd，filebrowser_cmd，textedit_cmd，mudclient_cmd
我的程序允许用户通过在用户选择运行浏览器，文件管理器等时输入PyTUI命令来更改用于Web浏览的程序等。
这是完整的代码。
我几周来一直在尝试不同的事情。 GitHub上的版本具有此功能，但它直接保存变量，而不是列表。我希望能够保存为列表，以便用户可以向Quick Launch菜单添加新命令。我只是将新命令附加到列表中，当pickle保存列表时，将保存新命令。这就是主意。我必须犯一些根本性的错误，我之前从来没有遇到过那么多麻烦。
# A simple menu system for use with TTY to launch various applications
# using framebuffer
#
# version 0.1.1
#
# Changelog
# 0.1.1
#
# Added Quick Launch
# Added Settings to change default quick launch apps
# Added Settings Save Feature Using Pickle
import os
import json
import pickle
import math
global is_savefile # 0 = false 1 = true
is_savefile = 0 # On first run, fbtui will create one if 0 and set to 1
global quicklaunch_list
quicklaunch_list = []
global browser_cmd
browser_cmd = ''
global browser_cmd_default
browser_cmd_default = "links2 -g google.com"
global filebrowser_cmd
filebrowser_cmd = ''
global filebrowser_cmd_default
filebrowser_cmd_default = "mc"
global mudclient_cmd
mudclient_cmd = ''
global mudclient_cmd_default
mudclient_cmd_default = "tt++"
global textedit_cmd
textedit_cmd = ''
global textedit_cmd_default
textedit_cmd_default = "nano"
global filename
filename = "fbtui.obj"
def clear():
"""Clear the screen"""
os.system("clear")
def show_settings():
""" Show current command registrations for Quick Launch """
print quicklaunch_list
print
raw_input("Press Enter")
def load_session():
""" Loads session variables from fbtui_settings.pickle """
global browser_cmd, filebrowser_cmd, mudclient_cmd, textedit_cmd, mudclient_cmd, quicklaunch_list
with open('objs.pickle') as f:
quicklaunch_list_loaded = pickle.load(f)
quicklaunch_list = quicklaunch_list_loaded
def save_session():
""" Saves session variables using pickle """
global browser_cmd, filebrowser_cmd, mudclient_cmd, textedit_cmd, is_savefile, quicklaunch_list
# now saving with json
# and back to pickle , no more json for now
print "about to write the following to save file:"
print quicklaunch_list
raw_input("Press Enter")
with open('objs.pickle', 'w') as f:
pickle.dump([quicklaunch_list[0],quicklaunch_list[1],quicklaunch_list[2],quicklaunch_list[3], quicklaunch_list[4]], f)
def quicklaunch_setup():
""" Quick Launch Setup Wizard """
global browser_cmd, filebrowser_cmd, mudclient_cmd, textedit_cmd, quicklaunch_list
clear()
print "Follow the prompts, typing 'default' restores the default values."
x1 = raw_input("Command for Web Browser: ")
browser_cmd = x1
quicklaunch_list.insert(0, browser_cmd)
x2 = raw_input("Command for File Browser: ")
filebrowser_cmd = x2
quicklaunch_list.insert(1,filebrowser_cmd)
x3 = raw_input("Command For Mud Client: ")
mudclient_cmd = x3
quicklaunch_list.insert(2, mudclient_cmd)
x4 = raw_input("Command for Text Editor: ")
textedit_cmd = x4
quicklaunch_list.insert(3, mudclient_cmd)
clear()
print "Browser Command set to: ", browser_cmd
print "File Browser Command set to: ", filebrowser_cmd
print "Mud Client Command set to: ", mudclient_cmd
print "Text Editor Command set to: ", textedit_cmd
print
raw_input("Press Enter")
save_session()
settingsmenu()
def ask_restore_defaults():
""" Ask User If They Want To Restore Quick Launch Details """
global browser_cmd, filebrowser_cmd, mudclient_cmd, textedit_cmd
clear()
print "Would you like to restore the Quick Launch defaults?"
print "Answer 'n' to skip restore and set up Quick Launch."
print "'q' to return to previous menu."
x = raw_input("Restore Defaults? y/n/q ")
if x == "y":
browser_cmd = browser_cmd_default
filebrowser_cmd = filebrowser_cmd_default
mudclient_cmd = mudclient_cmd_default
textedit_cmd = textedit_cmd_default
save_session()
settingsmenu()
elif x == "n":
quicklaunch_setup()
elif x == "q":
settingsmenu()
def defaultapps():
""" Change default apps used for quick launch """
clear()
x = raw_input("Begin Quick Launch Setup? y/n: ")
if x == 'y':
quicklaunch_setup()
clear()
raw_input("Quick Launch Setup Complete.")
settingsmenu()
else:
settingsmenu()
def packagesinstalled():
""" Report to user that packageinstall() has finished """
clear()
print "Installation Commands Completed."
print "There May Or May Not Have Been Errors"
print "Depending on your repo configuration."
print
raw_input("PRESS ENTER")
MainMenu()
def packageinstall():
""" Install needed packages """
os.system("sudo apt-get install directfb")
os.system("sudo apt-get install fbterm")
os.system("sudo apt-get install links2")
os.system("sudo apt-get install elinks")
os.system("sudo apt-get install mc")
os.system("sudo apt-get install tt++")
os.system("sudo apt-get install nano")
os.system("sudo apt-get install pianobar")
packagesinstalled()
def settingsmenu():
""" Make Sure Dependencies Are Installed """
clear()
print "|++++++++++++++SETTINGS+++++++++++++++++++++++|"
print "| |"
print "| 1. Install Needed Packages |"
print "| 2. Change Default Applications |"
print "| 3. Restore Setting Defaults |"
print "| 4. Main Menu |"
print "|+++++++++++++++++++++++++++++++++++++++++++++|"
print
print
x = raw_input("Settings Menu: ")
if x == '1':
packageinstall()
settingsmenu()
elif x == '4':
MainMenu()
elif x == '2':
defaultapps()
elif x == '3':
ask_restore_defaults()
else:
settingsmenu()
def internetmenu():
""" Print List of Internet Using Apps"""
clear()
print "|++++++++++++++++INTERNET++MENU++++++++++++++++|"
print "| 1. Links2 with image support |"
print "| 2. Elinks |"
print "| 3. TinTin Mud Client |"
print "| 4. PianoBar |"
print "| ------------------------------------------ |"
print "| 5. Main Menu |"
print "|++++++++++++++++++++++++++++++++++++++++++++++|"
print
print
print
x = raw_input("Internet Menu: ")
if x == '1':
clear()
os.system('links2 -g google.com')
internetmenu()
elif x == '2':
clear()
os.system("elinks google.com")
internetmenu()
elif x == '3':
clear()
os.system('tt++')
internetmenu()
elif x == '4':
clear()
os.system('pianobar')
internetmenu()
elif x == '5':
MainMenu()
else:
internetmenu()
def MainMenu():
"""Print Main Menu and Handle Main Menu Input"""
global browser_cmd, filebrowser_cmd, mudclient_cmd, textedit_cmd, quicklaunch_list
clear()
print " FBTUI 0.1a "
print "-----------------------------------------------"
print "|++++++++++++++++++MAIN+MENU+++++++++++++++++++|"
print "| 1. Internet |"
print "| 2. Files |" # Load Files Apps Menu
print "| 3. Settings |" # Load Settings Apps Menu
print "| 4. Apps |" # Load Apps Menu
print "| ----------------------------------------- |"
print "| 5. Exit |"
print "|++++++++++++++++++++++++++++++++++++++++++++++|"
print
print "Quick Launch: web files mud text shell "
print " save load fix sshow "
print
x = raw_input("Main Menu: ")
if x == '1':
internetmenu()
elif x == '2':
clear()
os.system('mc')
MainMenu()
elif x == '3':
settingsmenu()
elif x == '4':
MainMenu()
elif x == '5':
clear()
exit()
elif x == "web":
os.system(browser_cmd)
MainMenu()
elif x == "files":
os.system(filebrowser_cmd)
MainMenu()
elif x == "mud":
os.system(mudclient_cmd)
MainMenu()
elif x == "text":
os.system(textedit_cmd)
MainMenu()
elif x == "shell":
os.system("bash")
MainMenu()
elif x == "save":
save_session()
MainMenu()
elif x == "fix":
firstrun()
MainMenu()
elif x == "load":
load_session()
MainMenu()
elif x == "sshow":
show_settings()
MainMenu()
else:
MainMenu()
def firstrun():
""" Creates a save file on first run """
global quicklaunch_list, browser_cmd, filebrowser_cmd, mudclient_cmd, textedit_cmd, is_savefile
browser_cmd = "links2 -g google.com"
quicklaunch_list.append(browser_cmd)
filebrowser_cmd = "mc"
quicklaunch_list.append(filebrowser_cmd)
mudclient_cmd = "tt++"
quicklaunch_list.append(mudclient_cmd)
textedit_cmd = "nano"
quicklaunch_list.append(textedit_cmd)
clear()
print "Browser command set to: ", browser_cmd
print "File manager command set to: ", filebrowser_cmd
print "Mud Client command set to: ", mudclient_cmd
print "Text Editor command set to: ", textedit_cmd
print
print "First Run Setup will now create a save file."
raw_input("Press Enter")
is_savefile += 1
quicklaunch_list.append(is_savefile)
save_session()
print "Save file created."
raw_input("Press Enter")
MainMenu()
def check_savefile():
""" Checks whether or not a save file has been created """
global is_savefile
if is_savefile < 1:
clear()
print "This appears to be the first time FBtui is run."
print "Initializing First Run setup."
raw_input()
firstrun()
else:
clear()
print "Save File Found and Loaded."
raw_input("Press Enter")
load_session()
MainMenu()
def Main():
""" Load Main Menu and Set Up Environment"""
quicklaunch_list.insert(0, 'links2 -g google.com')
quicklaunch_list.insert(1, 'mc')
quicklaunch_list.insert(2, 'tt++')
quicklaunch_list.insert(3, 'nano')
MainMenu()
# Load Main()
Main()
答案 0 :(得分：0)
问题：问题可能在我的代码中的其他地方？
运行此最小示例：
import pickle
class Session(object):
def __init__(self, fname):
self.qlaunch = []
self._filename = fname
def __str__(self):
if self.qlaunch:
return ', '.join([m for m in self.qlaunch])
else:
return 'self.qlaunch is Empty!'
def setup(self, menu):
for m in menu:
self.qlaunch.append(m)
def load(self):
with open(self._filename, 'r') as f:
self.qlaunch = pickle.load(f)
def save(self):
with open(self._filename, 'w') as f:
pickle.dump(self.qlaunch, f, protocol=0)
if __name__ == '__main__':
session = Session('session.pickled')
save = False
save = True
if save:
session.setup(['Command for Web Browser: ',
'Command for File Browser: ',
'Command For Mud Client: ',
'Command for Text Editor: '])
session.save()
print(session)
if not save:
session.load()
print(session)
使用Python测试：2.7.9