python, when I load a dictionary using pickle, only the first key and value print when I try to print all contents of the dictionary

[Gilley178]

Good day,

The purpose of my script is to create a small dictionary that is saved to a file using pickle and print the entire contents of the dictionary for the user. My script prompts the user to make 1 of 3 choices:

Selection 1 is intended to print all contents of a dictionary loaded using pickle. Selection 2 appends to the existing dictionary and prints what was appended. Selection 3 creates a file and adds an entry into it.

When I select option 1, only the first entry prints.

When I use select option 2, I can add an entry and I can see that entry in the file that is in the same folder as the script. I am unsure what type of file it is. I can open with notepad though. The new entry also prints.

I only select option 3 once, to create the file. It adds the first entry and prints it successfully.

I need help getting the entire contents of the dictionary to print.

import pickle
 
 
print("""\n 
      1- View  codes
      2- Add code
      3- Create file/add first""")
 
while True:
    choice = input("What is your choice?")
 
    DC_Message = {}
 
 
    if choice == "1":
        filename = "dcoutput"
        infile = open(filename, 'rb')
        DC_Message2 = pickle.load(infile)
        infile.close()
        for key, value in DC_Message2.items():
            print(key, ' : ', value)
 
 
    elif choice == "2":
        DCcode = str(input("What is the new DCcode?"))
        Message = str(input("What is the new message"))
        DC_Message[DCcode] = Message
        print(DC_Message)
        for key, value in DC_Message.items():
            outfile = open("dcoutput", 'ab')
            pickle.dump(DC_Message, outfile)
            outfile.close()
            print(key, ' : ', value)
 
    elif choice == "3":
        DCcode = str(input("What is the new DCcode?"))
        Message = str(input("What is the new message"))
        DC_Message[DCcode] = Message
        print(DC_Message)
        for key, value in DC_Message.items():
            outfile = open("dcoutput", 'wb')
            pickle.dump(DC_Message, outfile)
            outfile.close()
            print(key, ' : ', value)

[dev7060]

The purpose of my script is to create a small dictionary that is saved to a file using pickle and print the entire contents of the dictionary for the user. My script prompts the user to make 1 of 3 choices:

Selection 1 is intended to print all contents of a dictionary loaded using pickle. Selection 2 appends to the existing dictionary and prints what was appended. Selection 3 creates a file and adds an entry into it.

When I select option 1, only the first entry prints.

When I use select option 2, I can add an entry and I can see that entry in the file that is in the same folder as the script. I am unsure what type of file it is. I can open with notepad though. The new entry also prints.

I only select option 3 once, to create the file. It adds the first entry and prints it successfully.

I need help getting the entire contents of the dictionary to print.

import pickle
 
 
print("""\n 
      1- View  codes
      2- Add code
      3- Create file/add first""")
 
while True:
    choice = input("What is your choice?")
 
    DC_Message = {}
 
 
    if choice == "1":
        filename = "dcoutput"
        infile = open(filename, 'rb')
        DC_Message2 = pickle.load(infile)
        infile.close()
        for key, value in DC_Message2.items():
            print(key, ' : ', value)
 
 
    elif choice == "2":
        DCcode = str(input("What is the new DCcode?"))
        Message = str(input("What is the new message"))
        DC_Message[DCcode] = Message
        print(DC_Message)
        for key, value in DC_Message.items():
            outfile = open("dcoutput", 'ab')
            pickle.dump(DC_Message, outfile)
            outfile.close()
            print(key, ' : ', value)
 
    elif choice == "3":
        DCcode = str(input("What is the new DCcode?"))
        Message = str(input("What is the new message"))
        DC_Message[DCcode] = Message
        print(DC_Message)
        for key, value in DC_Message.items():
            outfile = open("dcoutput", 'wb')
            pickle.dump(DC_Message, outfile)
            outfile.close()
            print(key, ' : ', value)

pickle.load(inf ile) unserializes one object at a time. The file pointer is then shifted to the beginning of the next object. You may use it like below to unserialize all the objects.

while True:
    try:
        print(pickle.load(infile))
    except EOFError:
        break