string manipulation in python for reading json object and '' removal-CodePudding

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?

CodePudding user response：

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.

CodePudding user response：

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']

CodePudding user response：

To read a JSON object in Python, you can use the JSON module. Here is an example of how to use the JSON module to parse a JSON object stored in a string:

    import json

json_string = '{"key": "value"}'

parsed_json = json.loads(json_string)

print(parsed_json)  # Output: {'key': 'value'}

To remove quotes from a string in Python, you can use the replace() method. Here is an example of how to remove single quotes from a string:

    string = "'Hello, World'"

new_string = string.replace("'", "")

print(new_string)  # Output: Hello, World

You can also use the strip() method to remove quotes from the beginning and end of a string. Here is an example of how to remove both single and double quotes from the beginning and end of a string:

    string = '"Hello, World"'

new_string = string.strip('"\'')

print(new_string)  # Output: Hello, World