Create dictionary with a for loop-CodePudding

I want to create a dictionary with Key value pairs which are filled via an for Loop

The dictionary I want to achive

[
  { 
    "timestamp": 123123123,
    "image": "image/test1.png"
   },
  {
    "timestamp": 0384030434,
    "image": "image/test2.png"
  }

]

My code does not work and I´m new to the datatypes of python.

    images_dict = []
    for i in images:
      time = Image.open(i)._getexif()[36867]
      images_dict = {"timestamp": time, "image": i}

What am I missing?

CodePudding user response：

First, you seem to be confusing the definition of a list and a dictionary in python. Dictionaries use curly brackets {} and lists use regular brackets []. So in your first example, you are describing a list with a single element, which is a dictionary.

As for your code example, you are creating an empty list, and then iterating over images which I assume is a list of images, and then redefining the variable images_dict to be a dictionary with two key: value pairs for every iteration.

It seems like what you want is this:

images_dict = {}
for image in images:
    time = Image.open(1)._getexif()[36867]
    images_dict['timestamp'] = time
    images_dict['image'] = image

CodePudding user response：

The answer from Tom McLean worked for me, I´m a little bit confused with the dataypes of python

images_dict.append({"timestamp": time, "image": i})