import numpy as np

np.sqrt(25)

np.sqrt(25)

np.arange(3, 10)

np.arange(10, 3, -1)

np.arange(10, 3, -1, dtype='float')

import time
time.ctime()

x = 16

x

np.sqrt(x)

x = np.arange(1, 7)

x

np.sqrt(x)

x

x = np.sqrt(x)

choices = np.arange(1, 10000)
np.random.choice(choices, 20, replace=False) # sample _without_ replacement

np.random.choice(np.arange(1, 10000), 20, replace=False)

7. + 2.

3. * 4.

5. / 2.

3. - 8.

-3.

5.**2. # same as 5^2 (or 5 to the power of 2)

8. + 4. / 2.

(8. + 4.) / 2.

3.**2.

np.sqrt(3.) # or 3.**0.5

8.**(1./3.)

np.sin(np.pi)

np.float64(1.) / 0.

np.float64(0.) / 0.

name = "python"
name

"name"

name = python