在Python中保存變量

Question

我的問題是關於在Python中保存變量的值。更具體地說，我有兩種不同的腳本，用兩種不同的方式計算相同的東西。我想要做的是比較兩個腳本返回的變量的值。所以我想知道是否我可以運行第一個腳本，保存其中一個變量的值（比方說矩陣V），然後運行第二個腳本並比較第二個腳本計算的相同變量的值。

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Answer 1

就像@claymore說的意見，這可以用泡菜來完成。您將您想要的變量存儲到pickle中，然後從比較腳本中獲取pickle對象。

下面是一個例子

script_a.py

# Save a dictionary into a pickle file. 
import pickle 

def funca(): 
    favorite_color = { "lion": "yellow", "kitty": "red" } 
    with open("a.pickle","wb") as f: 
     pickle.dump(favorite_color, f) 

funca() 

script_b.py

# Save a dictionary into a pickle file. 
import pickle 

def funcb(): 
    favorite_color = { "lion": "blue", "kitty": "orange" } 
    with open("b.pickle","wb") as f: 
     pickle.dump(favorite_color, f) 

funcb() 

compare.py

# Load the dictionary back from the pickle file. 
import pickle 
import os 

os.system("python script_a.py") 
os.system("python script_b.py") 

a_fav = pickle.load(open("a.pickle", "rb")) 
b_fav = pickle.load(open("b.pickle", "rb")) 

print "script 1 had favorite = ", a_fav 
print "script 2 had favorite = ", b_fav 

來源：https://wiki.python.org/moin/UsingPickle