Create a Single Python File with the Functions - IT/Computer Science Assignment Help

Assignment Task:

Task:

Create a single Python file with the functions requested below. Submit your challenge solution as a separate file – Lastname_Firstname_A2_challenge.py.

Task 1: Quality control [2 marks] Plastyco manufactures sheets of plastic and has a process that scans for defects in 100×100 grid locations. Sheets with defects can still be salvaged so long as the following conditions are met:

• There are no more than 8 defects overall • There are no more than 4 defects in any 3×3 square The image below shows 4 defects in a 3×3 square. A sheet with this set of defects could pass quality control. The next image shows 5 defects in a 3×3 square; this sheet would be rejected. Write a function is_sheet_usable(sheet), that takes a numpy array. In the array, if a grid location has a defect, the array will contain 1, otherwise it will contain 0. The function should return True if the pane can be used, otherwise False. Error checking If sheet is not a numpy ndarray, raise TypeError. If sheet has a shape other than 100×100, raise ValueError. If sheet contains values other than 0 or 1, raise ValueError.

Task 2: Combining CSVs [4 marks] Suppose we have a folder containing a large number of CSV files. Each CSV should have a column called key that should be used as the index. If the file does not have a key column, it should be skipped. Most of the files will have a similar set of columns, with some variations. We need to combine all the data from each file into a single DataFrame. Write a function combine_csv_files(directory, output_filename). • directory is the folder location where the files can be found

• output_filename is where the combined DataFrame should be saved

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