(Python Example for Beginners)
Write a Pandas program to insert a new column in existing DataFrame.
Sample DataFrame:
Sample Python dictionary data and list labels:
exam_data = {‘name’: [‘Anastasia’, ‘Dima’, ‘Katherine’, ‘James’, ‘Emily’, ‘Michael’, ‘Matthew’, ‘Laura’, ‘Kevin’, ‘Jonas’],
‘score’: [12.5, 9, 16.5, np.nan, 9, 20, 14.5, np.nan, 8, 19],
‘attempts’: [1, 3, 2, 3, 2, 3, 1, 1, 2, 1],
‘qualify’: [‘yes’, ‘no’, ‘yes’, ‘no’, ‘no’, ‘yes’, ‘yes’, ‘no’, ‘no’, ‘yes’]}
labels = [‘a’, ‘b’, ‘c’, ‘d’, ‘e’, ‘f’, ‘g’, ‘h’, ‘i’, ‘j’]
Sample Solution :
Python Code :
Sample Output:
Original rows: attempts name qualify score a 1 Anastasia yes 12.5 b 3 Dima no 9.0 c 2 Katherine yes 16.5 d 3 James no NaN e 2 Emily no 9.0 f 3 Michael yes 20.0 g 1 Matthew yes 14.5 h 1 Laura no NaN i 2 Kevin no 8.0 j 1 Jonas yes 19.0 New DataFrame after inserting the 'color' column attempts name qualify score color a 1 Anastasia yes 12.5 Red b 3 Dima no 9.0 Blue c 2 Katherine yes 16.5 Orange d 3 James no NaN Red e 2 Emily no 9.0 White f 3 Michael yes 20.0 White g 1 Matthew yes 14.5 Blue h 1 Laura no NaN Green i 2 Kevin no 8.0 Green j 1 Jonas yes 19.0 Red
Pandas Example – Write a Pandas program to filter words from a given series that contain atleast two vowels
Two Machine Learning Fields
There are two sides to machine learning:
- Practical Machine Learning:This is about querying databases, cleaning data, writing scripts to transform data and gluing algorithm and libraries together and writing custom code to squeeze reliable answers from data to satisfy difficult and ill defined questions. It’s the mess of reality.
- Theoretical Machine Learning: This is about math and abstraction and idealized scenarios and limits and beauty and informing what is possible. It is a whole lot neater and cleaner and removed from the mess of reality.
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