所以我正在尝试使用cpickle将kivy小部件保存到文件中,我收到错误。
from kivy.uix.widget import Widget
import cPickle as pickle
foo = Widget()
bar = open('bar.dat', 'w')
pickle.dump(foo, bar)
bar.close()
提供跟踪,如
Traceback (most recent call last):
File ".last_tmp.py", line 6, in <module>
pickle.dump(foo, bar)
File "QPython/build/python-install/lib/python2.7/copy_reg.py", line 71, in_reduce_ex
TypeError: __init__() takes exactly 0 positional arguments(1 given)
有没有办法解决这个问题?或者有更好的方法将窗口小部件保存到文件中供以后使用吗?
答案 0 :(得分:1)
看起来使用较高的protocol可能有所帮助:
#!/usr/bin/python
# -*- coding: utf-8 -*-
try:
import cPickle as pickle
except:
import pickle
from kivy.uix.widget import Widget
w = Widget()
w.test = 5
data_string = pickle.dumps(w, protocol=pickle.HIGHEST_PROTOCOL)
x = pickle.loads(data_string)
print x.test