CODEWITHSUNDEEP
pythonpickle
Nitroxone
Nitroxone

Reputation: 39

Python : pickle.load() only returns the first value of the file

I'm creating a very basic program that stores a dictionary of words translated from English to French, for example :

I'm storing all those values in a file that I append and read using the pickle function.

The problem is that when I use pickle.load to read the file and then print it, only the first value is returned.

I can't see where is my error, and I've been looking everywhere without getting any answer. Thanks in advance.

import pickle
import os

clear=lambda:os.system("cls")

def pause():
    input("Press ENTER to continue.")

def print_dictionary(dct):
    print("Dictionary (English / French)")
    for wordenglish, wordfrench in dct.items():
        print("{} : {}".format(wordenglish, wordfrench))

dictionary={}
for loop in range(3):
    wordEnglish=input("Enter the word in English : ")
    wordFrench=input("Enter the word in French : ")
    pause()
    clear()
    print("Saving ...")
    dictionary[wordEnglish]=wordFrench
    with open("data","ab") as file:
        pickler=pickle.Pickler(file)
        pickler.dump(dictionary)
    print("Saved !")
pause()
with open("data","rb") as file:
    unpickler=pickle.Unpickler(file)
    dictionary_get=unpickler.load()
print_dictionary(dictionary_get)
pause()

For example, if I enter "Fire","Feu" / "Water","Eau" / "Mud","Boue", the only value I will get will be "Fire","Feu".

Upvotes: 0

Views: 2135

Answers (2)

arutaku
arutaku

Reputation: 6107

Now you can use the walrus operator (:=) in a clear way:

with open('pickle_file_to_read.p', 'rb') as f:
    pickler = pickle.Unpickler(f)
    while record := pickler.load():
        # record is the read object from the pickle file.

Upvotes: 0

Avash Kumar
Avash Kumar

Reputation: 11

use exception like

try:
   while True:
      y=pickle.load(file)
      print(y)
except EOFError:
   print('End of File')

Upvotes: 1

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