how does the calling of Book() work if not imported?

Question

I was just wondering how does the calling of Book class in Bookcase work if Kenneth imported like this: from books import Bookcase?

Can someone please explain? we probably already covered this but it must of slipped through the cracks of my mind lol

Answer 1 · 2018-06-18T15:36:29Z

June 18, 2018 3:36pm

If you import something (may it be a function, a class, etc.), and it uses a piece of data (it could be a variable, a function, a class, etc.) from the program it's from, you still can import it alone and it correctly looks for the variables in the original program it is imported from.

So, yes, from books import Bookcase is completely valid, and Bookcase may access Books from the original program it was from. However, if you defined a variable, then imported Bookcase frombooks, Bookcase would not be able to access it.

For example:

# This is my_program.py
my_variable = 123
def my_func():
    print(my_variable)

# This is test.py
from my_program import my_func
my_func()  # Prints 123
my_variable = 64
my_func()  # Still prints 123

I hope this helps! ~Alex

Answer 2 · 2018-06-18T15:43:14Z

June 18, 2018 3:43pm

Thank you Alex! totally helped, I get it now :)

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Ines Fazlić

Ines Fazlić

how does the calling of Book() work if not imported?

2 Answers

Alexander Davison

Alexander Davison

Ines Fazlić

Ines Fazlić

Alexander Davison

Alexander Davison

Jay Reyes

Jay Reyes