Python
All Top 50 Python & Pandas Interview Questions#17
Isolate Numerical and Categorical Columns with select_dtypes in Pandas
EasyInterview Question #17
Given a mixed DataFrame of numerical, object, and datetime columns, select all numerical columns (int, float) for statistical scaling.
Input Table: mixed_df
1 rows preview| id | age | salary | signup_date | country |
|---|---|---|---|---|
| 1 | 25 | 65000.5 | 2026-01-01 | India |
Expected Output Structure1 rows
| id | age | salary |
|---|---|---|
| 1 | 25 | 65000.5 |
Interview Context
Asked frequently in data analyst and business analyst technical rounds. Focus on clean filtering, optimal indexing usage, and unambiguous column selection.
Python 3.10 (Pandas)
Environment Ready
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