Completed Pandas10

[DhruvParashar246]

No description provided.

[super30admin]

The student has provided solutions to three different pandas problems. Here's an evaluation of each:

1. Actors and Directors who Cooperated At Least Three Times:

   • Correctness: The solution correctly groups by actor_id and director_id, counts the timestamps, and filters for counts >= 3.
   • Time Complexity: O(n) for grouping and counting, which is efficient.
   • Space Complexity: O(n) in the worst case, but likely less since we're filtering.
   • Code Quality: The code is clean and straightforward. The variable name 'num_unique' could be more descriptive.
   • Efficiency: The solution is efficient, though reset_index() could be avoided if not needed.

2. Daily Leads and Partners:

   • Correctness: Correctly groups by date_id and make_name, calculates nunique for lead_id and partner_id, and renames columns appropriately.
   • Time Complexity: O(n) for grouping and counting unique values, which is efficient.
   • Space Complexity: O(n) for the grouped data.
   • Code Quality: Good, but the variable name 'num_unique' is misleading since we're counting unique values, not just counting.
   • Efficiency: The solution is efficient. No major optimizations needed.

3. Group Sold Products by the Date:

   • Correctness: Correctly groups by sell_date, calculates number of unique products and concatenates them in sorted order.
   • Time Complexity: O(n log n) due to the sorting operation, which is acceptable.
   • Space Complexity: O(n) for the grouped data.
   • Code Quality: Good, but the lambda function could be replaced with a predefined function for better readability.
   • Efficiency: The solution is efficient. The sort could potentially be done during the groupby operation.

General feedback:

• The student demonstrates good understanding of pandas operations.
• Variable naming could be more descriptive in some cases.
• The solutions are efficient and handle the problems correctly.
• The code is well-structured and follows pandas best practices.
• Adding docstrings to the functions would improve readability and maintainability.