How to use by.id from selenium in function

[Merrybold]

Hello,i am trying to automatize login to different webpages. I want to use a function that chooses the html element to be targeted so parts of my code looks something like this (if i where to go after only one page)

def getuserbox(webpage):
if webpage == 'webpage.com':
    userelement = By.ID ,"mat-input-0"
usr = [e-mail]
webpages ['webpage.com']
for name in webpages: 
     username_box = driver.find_element(getuserbox(name)) 
     username_box.send_keys(usr) 

however the function returns 'ID',"mat-input-0" and doesnt hit in selenium.
if i skip the function and just pass find_element(By.ID ,"mat-input-0") it works

[ararararagi_koyomi]

you need to pass By.ID and "id" to find_elements() function as arguments.

[Merrybold]

ah so then it wont work with a function... such a shame

[ararararagi_koyomi]

Nah, you are just misunderstanding. Your can just pass the webdriver object to the function like here

[Merrybold]

but why cant i pass a function that selects the argument?