2.4. Answers

Solution to Exercise 2.1

1. 1.0 (float)

2. 1 (int)

3. TypeError since x/x is a float and we cannot index an array using a float. Try using z[x//x] or z[int(x/x)] instead.

4. "5555555555" (string)

5. [10, 20, 10, 20, 10, 20, ... , 10, 20] (list)

6. TypeError since 10. is a float and we cannot use the operator * with a list and a float. First convert to a float.

7. array(100, 200) (Numpy array)

8. TypeError since floats and strings cannot be added. Convert w to an int or float first e.g. y + int(w).

9. array([100, 400]) Numpy performs elementwise multiplication