authentication for boto3

Question

I am watching a few boto3 videos from youtube to see how the python script gets authenticated from AWS to run a script.
1. Using **aws configure** to create a profile file, then via the following to get authenticated.
    aws_management_console = boto3.session.Session(profile_name="default")
2. some demo does not include any authentication, how is that script authenticated to run ?
![Enter image description here](/media/postImages/original/IMUWZ22R_1QXm-ndB1yOU2UQ)
 
thanks a lot !!

Riku_Kobayashi · Accepted Answer

Hello.

boto3 will read the authentication information of "~/.aws/credentials" set for the OS user who executed the script without including the code below.  
The authentication information to be read is "default", so if you have set a different profile, you will need to specify the profile using the code below.  
```
aws_management_console = boto3.session.Session(profile_name="default")
```

https://boto3.amazonaws.com/v1/documentation/api/latest/guide/credentials.html  
> Boto3 will look in several locations when searching for credentials. The mechanism in which Boto3 looks for credentials is to search through a list of possible locations and stop as soon as it finds credentials. The order in which Boto3 searches for credentials is:  
> 
> * Passing credentials as parameters in the boto.client() method  
> * Passing credentials as parameters when creating a Session object  
> * Environment variables  
> * Shared credential file (~/.aws/credentials)  
> * AWS config file (~/.aws/config)  
> * Assume Role provider  
> * Boto2 config file (/etc/boto.cfg and ~/.boto)  
> * Instance metadata service on an Amazon EC2 instance that has an IAM role configured.

gongya · Answer

thanks so much for such a quick response !!!

authentication for boto3

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