Ctrl+K

Creating arrays

Creating arrays#

Learning Objectives#

After working through this topic, you should be able to:

  • Create numpy arrays from Python lists

  • Create numpy arrays using numpy’s array creation functions

  • Reshape arrays

  • Repeat array elements

Materials#

Here is the screencast. These are the slides.

Additional Materials#

Quiz#

import numpy as np

a = [1, 2, 3, 4, 5, 6, 7, 8, 9]
b = np.array(a).reshape(3, 3)
print(b)
b.shape

c = b.repeat(3)
c.shape

[[1 2 3]
 [4 5 6]
 [7 8 9]]

(27,)
Contents