将for循环的结果添加到字典中，然后追加到列表中

Question

I'm aware that this is really simply , but I'm struggling with this. Basically I want to add the results of a for loop inside a dicionary, so i can work the results on another function, which i can print the desired field based on the key value,

Example:

    i = 0
    b = 0
    cc = []
    while True:
        i += 1
        b += 1
        abc = {b: i}
        cc.append(abc)
        if i == 3:
            break

Result : [{1: 1}, {2: 2}, {3: 3}]

So, the expected result would be [{"1": 1, "2": 2, "3": 3}]

This is for python 2.7

Answer 1

Based on your expected outcome, I would suggest this:

cc = []
for i in range(0,3):
    cc.append({str(i): i})

But please note that you do NOT get a dictionary at the end of this loop... What you get is a list of dictionaries, each dictionary featuring only one key-value pair... [{'1':1},{'2':2}] is not the same as {'1':1, '2':2} and you will probably have problems using such a list of dictionaries.

So my guess is you want something more along the lines of this:

cc = dict()
for i in range(0,3):
    cc[str(i)] = i

Please tell me if I misunderstood your problem or if you need more explanation for the solutions.