python 中的字符串操作，用于读取 json object 和 '' 删除

Question

I am trying to construct a role in AWS where I am trying to have list of resources.

Below is an example

shared ={
    "mts":{
        "account_id":"11111",
        "workbench":"aaaaa",
        "prefix":"rad600-ars-sil,rad600-srr-sil-stage1,rad600-srr-sil-stage2"
    },
    "tsf":{
        "account_id":"22222",
        "workbench":"bbbbb",
        "prefix":"yyyy"

    }
}

I am trying to construct a list with

role_arn=[]
for key in shared:
    
    role_arn.append(f"arn:aws:iam::'{shared[key]['account_id']}':role/'{shared[key]['workbench']}'_role") 

here is my output:

["arn:aws:iam::'11111':role/'aaaaa'_role", "arn:aws:iam::'22222':role/'bbbbb'_role"]

I want the '' to be removed from the list while appending into the list itself.

desired output:

["arn:aws:iam::11111:role/aaaaa_role", "arn:aws:iam::22222:role/bbbbb_role"] 

I am trying my hands on python. IS there a way to achieve it?

Answer 1

role_arn=[]
for key in shared:
    
    role_arn.append(f"arn:aws:iam::{shared[key]['account_id']}:role/{shared[key]['workbench']}_role") 

You don't need those ' unless you want them. You can remove it and the string formatting would still work as expected and get rid of the ' .

Most likely your concern was coming from not knowing the Lietral format strings. You don't need to use '' before every variable. {} takes care of it.

Answer 2

This is my take on it

This uses dictionary comprehension to iterate over the shared dictionary instead of a for loop

shared ={
    "mts":{
        "account_id":"11111",
        "workbench":"aaaaa",
        "prefix":"rad600-ars-sil,rad600-srr-sil-stage1,rad600-srr-sil-stage2"
    },
    "tsf":{
        "account_id":"22222",
        "workbench":"bbbbb",
        "prefix":"yyyy"

    }
}

role_arn = [f"arn:aws:iam::{data['account_id']}:role/{data['workbench']}_role" for key, data in shared.items()]

print(role_arn)

Which gives the output

['arn:aws:iam::11111:role/aaaaa_role', 'arn:aws:iam::22222:role/bbbbb_role']