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Python SQLAlchemy Basics Working with SQLAlchemy Cleaning Data

Andras Andras
Andras Andras
7,941 Points
Posted by Andras Andras
Andras Andras
7,941 Points

App returns strange list of items.

When I run the code:

if name == "main": Base.metadata.create_all(engine) # app() add_csv() for book in session.query(Book): print (book)

It gives a strange result. Why?

PS C:\prog\Python\Eel\SQLite book database> python app.py <models.Book object at 0x000002479B5F3F10> <models.Book object at 0x000002479E507220> <models.Book object at 0x000002479E507280> <models.Book object at 0x000002479E507040> <models.Book object at 0x000002479E507010> <models.Book object at 0x000002479E506F80> <models.Book object at 0x000002479E506EF0> <models.Book object at 0x000002479E506E60> <models.Book object at 0x000002479E506DD0> <models.Book object at 0x000002479E506950>

Caleb Kemp
Caleb Kemp
12,754 Points
Caleb Kemp
Caleb Kemp
12,754 Points

I only looked at this for a second, but I saw you wrote

name == "main":

I think that might supposed to be __name__ == "main":

Here is a link to the video about using dunder main. I know jb30 is experienced in Python, he might have some good ideas if that wasn't the problem. Hope that helps.

jb30
jb30
44,805 Points

@craskan Markdown formats __name__ == "__main__" without the backticks as name == "main", so that is not an issue.

This question looks like a duplicate by the same poster so I tried answering the previous one instead.

Caleb Kemp
Caleb Kemp
12,754 Points
Caleb Kemp
Caleb Kemp
12,754 Points

That makes sense, I looked at the answer you put on the other post and I think it's exactly right, kind of how you might have to overwrite the "toString" method in some other languages. jb30 thanks for looking into it.

Andras Andras this is the video where the teacher covers that and 5:18 is where the teacher covers the __repr__ method specifically.

1 Answer

Sergio Andrés Herrera Velásquez
Sergio Andrés Herrera Velásquez
Courses Plus Student 23,765 Points

Basically it is giving you the position in memory of the item,(like when you park the car, it is telling you where the car is parked) in memory, check how you are calling the object, I think the method used is not the correct one, check for the way your method is being called.