Python List reverse() Method
Reverses the order of the list
reverse() method reverses the order of list. This method does not return anything; it modifies the list in place.
L = ['red', 'green', 'blue'] L.reverse() print(L) # Prints ['blue', 'green', 'red']
L = [1, 2, 3, 4, 5] L.reverse() print(L) # Prints [5, 4, 3, 2, 1]
Access List Items in Reversed Order
If you don’t want to modify the list but access items in reverse order, you can use reversed() built-in function. It returns the reversed iterator object, with which you can loop through the list in reverse order.
L = ['red', 'green', 'blue'] for x in reversed(L): print(x) # blue # green # red
Python Example for Beginners
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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