The Python .where function produces ____.

Question

BlackTom AI · Accepted Answer

The question asks about what the Python .where function produces.
Option 1: 'a value' — This is too general and imprecise. A typical conditional selection in Python, especially in data processing frameworks, returns a collection or structure rather than a single scalar value, so claiming it always yields a single value misstates the behavior.
Option 2: 'an array' — While some implementations or contexts might return an array-like result for certain operations, .where is commonly used to filter or select elements and tends to preserve a tabular or structured form rather than a bare one-dimensional array in many data-handling libraries. This makes it an incomplete or potentially misleading description.
Option 3: 'a table' — In many Python data science contexts, especially when using libraries that handle tabular data, a conditional selection like .where yields a table (or a dataframe-like structure) where the results align with the original tabular layout, often with missing values where the condition is not met. This framing matches the typical outcome of applying a condition to a dataset.
Option 4: 'a file' — This option introduces a file as the output, which is not a standard or intrinsic result of a .where operation. File creation is not implied by a typical in-memory conditional operation.
Overall, the most accurate characterization among the options is that the operation results in a tabular form, preserving the structure of the input dataset while applying the condition to filter or mask values. The other choices incorrectly describe the usual output shape or scope of .where in common Python data contexts.

UGBA 88-LEC-001 SP25 Check Your Understanding B

The Python .where function produces ____.

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