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One way of avoiding/understanding these errors is printing out the type.

When you run print(type(matches)) you will see that bf.match(desL,desR) returns a list. So accessing trainIdx on the entire list makes no sense at all.

Instead, you want to find the trainIdx of a particular match inside this list.For example, if you want to access the trainIdx of the first match, do matches[0].

The second problem in your code is trainIdx[:10]. This means that trainIdx returns a list and you are trying to access every element in it from index 0 to index 10. But if you again run print(type(matches[0].trainIdx)), it will return an int and not a list.

So the correct syntax for accessing the training id of the first match should be print(matches[0].trainIdx).

I will let you figure out how to access the remaining training idxs of all the matches.

Whenever in doubt, refer to the documentation.

Cheers :)

One way of avoiding/understanding these errors is printing out the type.

When you run print(type(matches)) you will see that bf.match(desL,desR) returns a list. So accessing trainIdx on the entire list makes no sense at all.

Instead, you want to find the trainIdx of first extract a particular match inside this list.For list. For example, if you want to access the trainIdx of the first first match, do matches[0].

The second problem in your code is trainIdx[:10]. This means that trainIdx returns a list and you are trying to access every element in it from index 0 to index 10. But if you again run print(type(matches[0].trainIdx)), it will return an int and not a list.

So the correct syntax for accessing the training id of the first match should be print(matches[0].trainIdx).

I will let you figure out how to access the remaining training idxs of all the matches.

Whenever in doubt, refer to the documentation.

Cheers :)

One way of avoiding/understanding these errors is printing out the type.

When you run print(type(matches)) you will see that bf.match(desL,desR) returns a list. So accessing trainIdx on the entire list makes no sense at all.

Instead, you want to first extract a particular match inside this list. For example, if you want to access the first first match, do matches[0].

The second problem in your code is trainIdx[:10]. This means that trainIdx returns a list and you are trying to access every element in it from index 0 to index 10. But if you again run print(type(matches[0].trainIdx)), it will return an int and not a list.

So the correct syntax for accessing the training id of the first match should be print(matches[0].trainIdx).

I will let you figure out how to access the remaining training idxs of all the matches.

Whenever in doubt, refer to the documentation.

Cheers :)