在Python_Shelve_Pickle中保存会话的所有变量(工作空间)

时间:2017-02-27 05:38:43

标签: python pandas pickle workspace shelve

我正在尝试在python中编写一个程序,它可以像R的保存一样工作。保存工作空间的图像。 Follwoing是我的代码,但它运行不顺畅,请帮助我使其工作

我使用了以下样本数据和绘图,以便可以对其进行测试

尝试1 - 使用Shelve,字典保存工作空间类型

import shelve
import numpy as np
import matplotlib.pyplot as plt
import pickle
import os
import pandas as pd


x = np.arange(-3, 3, 0.01)
y = np.sin(np.pi*x)

fig = plt.figure()
ax = fig.add_subplot(111)
line=ax.plot(x, y)

#shelving or pickling my session

my_shelf = shelve.open('shelve.out','c') # 'n' for new
for name in dir():
    if not name.startswith (('__','_','In','Out','exit','quit','get_ipython')):
      try:
        my_shelf[name] = globals()[name] # I didn't undersatnd why to use globals()
      except Exception:
        pass
        print('ERROR shelving: {0}'.format(name))

my_shelf.close()

要恢复:

my_shelf = shelve.open('shelve.out','r')
for key in my_shelf:
    globals()[key]=my_shelf[key]

my_shelf.close()

尝试这次使用Pickle再尝试一次:

 with open('save.p', 'wb') as f:
     for name in dir():
         if not name.startswith (('__','_','In','Out','exit','quit','get_ipython')):
             try:
               pickle.dump(name, f)
             except Exception:
               print('ERROR shelving: {0}'.format(name))
               pass


 with open('save.p',"rb") as f:  # Python 3: open(..., 'rb')
    pickle.load(f)            

我将非常感谢任何帮助,对于任何错误的缩进道歉,同时粘贴溢出他们得到了改变

1 个答案:

答案 0 :(得分:0)

莳萝模块提供了此功能。

dump_session(filename ='/ tmp / session.pkl',main = None,byref = False,** kwds)

load_session(filename ='/ tmp / session.pkl',main = None,** kwds)