CODEWITHSUNDEEP
pythonjson
Thomas O'Donnell
Thomas O'Donnell

Reputation: 73

Python: Can't convert 'tuple' object to str implicitly

I'm trying to get my code to store messages within txt file using json. Each time a new message comes in, it will add the new message to the array.

The structure will be:

{
  "Messages": {
    "Test Contact 2": {
      "0": "\"Message 1"
    },
    "Test Contact 1": {
      "0": "\"Message 1\"",
      "1": "\"Message 2\""
    }
  }
}

And here is my current code:

class PluginOne(IPlugin):
    def process(self):
        try:
            print("Database")
            data_store('Test contact', 'Text Message')
            pass
        except Exception as exc:
            print("Error in database: " + exc.args)


def data_store(key_id, key_info):
    try:
        with open('Plugins/Database/messages.txt', 'r+') as f:
            data = json.load(f)
            data[key_id] = key_info
            f.seek(0)
            json.dump(data, f)
            f.truncate()
        pass
    except Exception as exc:
        print("Error in data store: " + exc.args)

when I try to run the code, I get the following error

Can't convert 'tuple' object to str implicitly

Upvotes: 0

Views: 3763

Answers (1)

Wander Nauta
Wander Nauta

Reputation: 19685

In your exception handler, you're adding exc.args to a string. The args attribute is a tuple, which can't be converted to a string implicitly. You could...

    # print it seperately
    print("Error in data store")
    print(exc.args)

    # or alternatively
    print("Error in data store: " + str(exc.args))

    # or alternatively
    print("Error in data store: " + str(exc))

However, this being a problem in the exception handler, the root cause of the problem is something else, and your current exception handler isn't that great at handling it:

  • without your exception handler, Python would show a complete traceback of the root cause of the exception, and halt your program.
  • with your exception handler, only your message is printed and the program continues. This might not be what you want.

It would perhaps be better to only catch the specific exceptions you know you can recover from.

Upvotes: 1

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