在多种功能中使用身份验证凭据

Question

I'm writing a script that uses the requests library to obtain API data from a website requiring authentication. From my understanding and testing, the site doesn't seem to use auth-saving cookies, so authentication is required with each request, such as this:

page = requests.get('http://a_url.com', auth=(uname, pword))

This is fine for what I need except , that I have specific tasks split up into separate functions that handle different data in different ways. The only commonality is that they all require the username and password (obtained at the command line), so I've ended up with just short of every function taking "uname" and "pword" as their first parameters, followed by any other necessary params:

def get_all_projects(uname, pword):
    # function

def get_single_project(uname, pword, project_name):
    # function

def get_select_projects(uname, pword, projects):
    for project in projects:
        get_single_project(uname, pword, project)

# Etc...

Aside from turning the script into a class, is there any other way to deliver the credentials to the functions that need them without having to parameterize them? Requests.Session() won't work, since as stated above I need to include the auth with each call to get. I feel like a decorator would fit the situation well, but I don't understand them well enough yet to be able to confirm that belief.

Answer 1

As @barny pointed out, I missed the fact that you can indeed pass authentication to a requests.Session() via the following (from the docs and barny's comment):

s = requests.Session()
s.auth = (uname, pword)

so my url request from the op can now just be:

page = s.get('http://a_url.com')

with the auth automatically included as long as the session is active.

Along with that, my functions can now be condensed to just using the session object as a param instead of the username and password each time:

def get_all_projects(s):
    # function

def get_single_project(s, project_name):
    # function

def get_select_projects(s, projects):
    for project in projects:
        get_single_project(s, project)

# Etc...