Iterate over Python list with clear code - rewriting functions

Question

I've followed a tutorial to write a Flask REST API and have a special request about a Python code.

The offered code is following:

# data list is where my objects are stored 
def put_one(name):
    list_by_id = [list for list in data_list if list['name'] == name]
    list_by_id[0]['name'] = [new_name] 
    print({'list_by_id' : list_by_id[0]})

It works, which is nice, and even though I understand what line 2 is doing, I would like to rewrite it in a way that it's clear how the function iterates over the different lists. I already have an approach but it returns Key Error: 0

def put(name):    
    list_by_id = []
    list = []
    for list in data_list:
        if(list['name'] == name):
            list_by_id = list
            list_by_id[0]['name'] = request.json['name'] 
    return jsonify({'list_by_id' : list_by_id[0]})

My goal with this is also to be able to put other elements, that don't necessarily have the type 'name'. If I get to rewrite the function in an other way I'll be more likely to adapt it to my needs.

I've looked for tools to convert one way of coding into the other and answers in forums before coming here and couldn't find it.

Answer 1

It may not be beatiful code, but it gets the job done:

    def put(value):
        for i in range(len(data_list)):
            key_list = list(data_list[i].keys())
            if data_list[i][key_list[0]] == value:
                print(f"old value: {key_list[0], data_list[i][key_list[0]]}")
                data_list[i][key_list[0]] = request.json[test_key]
                print(f"new value: {key_list[0], data_list[i][key_list[0]]}")
                break

Now it doesn't matter what the key value is, with this iteration the method will only change the value when it finds in the data_list. Before the code breaked at every iteration cause the keys were different and they played a role.