NumPy I/O Operations: Exercises, Practice, and Solutions

NumPy I/O Operations Exercises [ 20 exercises with solution]

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1. Write a NumPy program that reads data from a CSV file into a NumPy array. The CSV file contains numeric data.
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2. Write a NumPy array with both numeric and string data to a CSV file.
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3. Write a NumPy program that reads data from a CSV file into a structured NumPy array with specified data types for each column.
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4. Write a structured NumPy array to a CSV file, ensuring proper formatting of different data types.
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5. Write a NumPy program that reads a CSV file containing missing values into a NumPy array, handling the missing values appropriately.
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6. Write a NumPy program that saves a NumPy array to a text file with space as the delimiter and then reads it back into a NumPy array.
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7. Write a NumPy array to a binary file using np.save and then load it back using np.load.
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8. Write a NumPy program that saves multiple NumPy arrays to a single binary file using np.savez and then loads them back using np.load.
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9. Write a NumPy array to an HDF5 file and then read it back into a NumPy array.
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10. Write a NumPy program that reads a specific dataset from an HDF5 file into a NumPy array.
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11. Write a NumPy program that saves a large NumPy array to a compressed .npz file and then reads it back into a NumPy array.
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12. Write a NumPy array to an Excel file using a library like pandas and then read it back into a NumPy array.
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13. Write a NumPy program that reads data from a JSON file into a NumPy array. The JSON file contains numeric data.
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14. Write a NumPy array with numeric data to a JSON file.
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15. Write a NumPy program that reads data from a CSV file into a Pandas DataFrame and then converts it to a NumPy array.
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16. Write a NumPy array to a SQLite database and then read it back into a NumPy array.
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17. Write a NumPy program that saves a NumPy array to a MATLAB .mat file using scipy.io.savemat and then reads it back using scipy.io.loadmat.
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18. Write a NumPy program that read image data from a PNG file into a NumPy array using an image processing library like PIL or opencv.
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19. Write a NumPy program that saves a NumPy array as an image file (e.g., PNG) using an image processing library like PIL or opencv.
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20. Write a NumPy program to append a NumPy array to a Python list and print the result.
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