use function to the items in list

Question

originally, beaker is instance and the function below is possible. beaker.replace(z=10)

I made a list of beakers bk = [beaker1, beaker2, beaker3] and I want all beaker to give function 'replace' like beaker1.replace(z=10) beaker2.replace(z=10) beaker3.replace(z=10)

so I made it brief but it does not work

bk = [beaker1, beaker2, beaker3]
for item in bk :
    item.replace(z=10)

but it says

    item.replace(z=10)
AttributeError: 'list' object has no attribute 'replace'

Answer 1

As it said, list has no attribute replace, but string has

bk = [beaker1, beaker2, beaker3]
bk = [10 if i == beaker1 else i for i in bk]

You don't have to write z = 10 as in Java or other languages. Only when you do want to bind 10 to z. Instead you can do it like this.

Answer 2

Have you tried printing out item that you are looping to be sure? It said that item is a list like:

bk = [beaker1, beaker2, beaker3]
for item in bk :
    print(item)
    print(type(item))