#indexing

• 7 Mar 2024 · Study

  Pandas · Selection with loc and iloc

  Label-based loc versus position-based iloc, boolean filtering, query(), and avoiding chained assignment.

• 12 Feb 2024 · Study

  NumPy · Boolean and fancy indexing

  Selecting with boolean masks and integer arrays, combining conditions with & and |, np.where, and why these return copies.

• 8 Feb 2024 · Study

  NumPy · Indexing and slicing

  Multi-dimensional indexing with a[i, j], slicing rows and columns, and the most important rule: basic slices are views, not copies.