Python script to create encrypted secrets in AWS secret manager using KMS Key

app.py

import boto3
import os
import json
filename = 'data.json'
kms_id = ''
secretdata= {"username":"chris","password":"BnQw!XDWgaEeT9XGTT29"}
secret_data={}
for k,v in secretdata.items():
    encrypt_string = os.popen(("aws kms encrypt --key-id %s --plaintext '%s' --query CiphertextBlob --output text" % (kms_id, v))).read()
    secret_data[k] = encrypt_string
json_data = json.dumps(secret_data)
with open(filename,'w') as f:	    
    f.write(json_data)
with open('data.json', 'r') as content_file:
    secret_content = content_file.read()
print(secret_content)
client = boto3.client('secretsmanager')
response = client.create_secret(
    Description='My test secret',
    Name='MyTestt',
    SecretString=secret_content,
)