Python Test 2

import numpy as np

a = np.array([[1, 2], [3, 4], [5, 6]])

b = a.flatten()

print(len(a), len(b))

• 6 2

• 2 3

• 3 6

• 3 2

What do you expect from this code (more than 1 answer)?

import numpy as np

a = np.arange(4)

b = a / 0

print(b)

• [nan nan nan]

• [nan inf inf inf]

• Zero Division Warning

• [inf inf inf inf]

import numpy as np

a = np.linspace(1, 3, 3) ** 3

x = a > 20

print(x)

• [False False True]

• [True True False]

• [True True True]

• [False False False]

import numpy as np

x1 = np.linspace(0, 5, 5, endpoint=False)

y1 = np.linspace(0, 5, 5, endpoint=True)

x2 = np.linspace(0, 5, 5, endpoint=False)

y2 = np.linspace(0, 4, 5, endpoint=True)

print(np.sum(x1) == np.sum(y1), np.sum(x2) == np.sum(y2))

• [True True]

• [False False]

• [True False]

• [False True]

import numpy as np

a = np.arange(2)

b = np.arange(2, 0, -1)

print(a == b)

• [False True]

• [True True]

• [False False]

• [True False]

import numpy as np

a = np.array(((1, 0, 1), (0, 1, 0)))

print(a.size)

• 3

• 2

• 6

• (2, 6)

• (2, 3)

import numpy as np

a = np.array(((1, 0, 1), (0, 1, 0)))

print(a.ndim)

• 2

• 3

• 6

• (2, 3)

• (2, 6)

import numpy as np

a = np.array(((1, 0, 1), (0, 1, 0)))

print(a.shape)

• 2

• 3

• 6

• (2, 3)

• (2, 6)

import numpy as np

x = np.linspace(0, 5, 5, endpoint=False)

y = np.linspace(0, 5, 5, endpoint=True)

print(x.size - y.size)

• -1

• 0

• 1

• 5

import numpy as np

a = np.arange(1, 2, 1)

b = np.linspace(1, 2, 1, dtype=int)

print(a + b)

• [1]

• [2]

• [1, 1]

• 2

• [2, 2]