CODEWITHSUNDEEP
python
Luka
Luka

Reputation: 125

Undo changes in python

     with open('example.json', 'r+') as file:
        dict_data = json.load(file)

     for data in dict_data:

        if "field1" in data:
            
            data["field1"] = constants.FIELD1[data["field1"][0]]

        if "field2" in data:
            data["field2"] = data["field1"] + data[["field2"][0]]
            data["field2"] = constants.FIELD2[data["field1"][0]]

I want that data["field1"] to take the original value and not the value that returns in the previous line. I have changed the execution of the lines but it gives me an error.

Upvotes: 2

Views: 558

Answers (1)

alexis
alexis

Reputation: 50190

I think you mean something like this:

if "field1" in data:            
    saved_key = data["field1"][0]
    data["field1"] = constants.FIELD1[data["field1"][0]]

    if "field2" in data:
        data["field2"] = data["field1"] + data[["field2"][0]]
        data["field2"] = constants.FIELD2[saved_key]

The second block of code only makes sense if both keys exist, so it is embedded under the first if.

Upvotes: 2

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