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Python Using Databases in Python Meet Peewee Queries Are Your Friend

rajan lagah
rajan lagah
2,539 Points
Posted by rajan lagah
rajan lagah
2,539 Points

how 0.username work ?

we return student but use 0.username. how does it work?

3 Answers

Josh Keenan
Josh Keenan
19,652 Points
Josh Keenan
Josh Keenan
19,652 Points

0 isn't the list it is the index, it isn't necessarily a list either. It is the first part of the output from the function called in the .format(), it looks for the first part of the output and takes that, in this case it is what we are looking to return and the function returns just one things, if you made it return two things you could use the 1 index.

Josh Keenan
Josh Keenan
19,652 Points
Josh Keenan
Josh Keenan
19,652 Points

My understanding is that is is accessing the 0th index (the first item) that is returned from the function in format, then it gets the username from this object and returns it

rajan lagah
rajan lagah
2,539 Points
rajan lagah
rajan lagah
2,539 Points

u are right boss. when i tried 1.username it give index out of bond . but how 0 can b list or etc. i cant digest that .

Dmitriy Ignatiev
PLUS
Dmitriy Ignatiev
Courses Plus Student 6,236 Points
Dmitriy Ignatiev
Dmitriy Ignatiev
Courses Plus Student 6,236 Points

I guess that is more simple that we think. My view is that when we call top student() it return a tuple (username, points) from our list and to have access to username or the points we need first indicate index of tuple or dict and this always be 0 if use get() and then we pass a key what information we would like to show 0.points or 0.usrename or both.