CODEWITHSUNDEEP
pythonjsondictionary
R.Fast
R.Fast

Reputation: 1

Python: replace existing json file

I want to add a new entry in my dictionary but with my code below it overwrites my existing file with the initial dictionary and adds a second dictionary with my new entry. I want to just have one updated dict. My initial dictionary looks like this: Dictionary

This is my code:

@app.route("/add_movie", methods=["POST"])
def add_movie():
    test_title = request.form["title"]
    test_year = request.form["year"]
    new_entry = {"Title": test_title,"Year": test_year,}
    with open("movie_database.json", "r+", encoding="UTF-8") as open_file:
        movie_database = json.load(open_file)
        movie_database.append(new_entry)
        json.dump(movie_database, open_file)
    return render_template("search.html")

Does anybody know what is wrong here?

Upvotes: 0

Views: 99

Answers (1)

Lex
Lex

Reputation: 61

I believe it's because you used

with open("movie_database.json", "r+", encoding="UTF-8") as open_file:

instead of

with open("movie_database.json", "a", encoding="UTF-8") as open_file:

opening with "a" means append to file

Upvotes: 1

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