erratum: chapter 2

[khosrogh]

• Page 43, the output of the code below should be different:

 [1]: yellow = {'dandelions', 'fire hydrant', 'leaves'}

 [2]: red = {'fire hydrant', 'blood', 'rose', 'leaves'}

 [3]: yellow&red

In the book, it is written {'fire hydrant'}, but it should be {'leaves', 'fire hydrant'}.

• Page 54: in the Terminology table, the Sibling nodes' definition reads: "Two nodes in a tree are called siblings if they are at the same level." By this definition, in the page 55 image, nodes E and F are also siblings, which is incorrect. I found out siblings node definition in here and here. I think the definition should be changed in one of these ways:

  • Sibling nodes are nodes on the same hierarchical level under the same parent node.

  • Child nodes with the same parent are sibling nodes.

[rajat-packt]

The above listed issues have been verified, and we have updated the readme to reflect the same.
We'll be closing this issue, thanks for the feedback, appreciate it!