In [1]:

    

import numpy as np


    

In [2]:

    

print(0.1 + 0.1 + 0.1)


    

    




0.30000000000000004

In [3]:

    

a = np.array([0.3, 0.1 + 0.1 + 0.1])
print(a)


    

    




[0.3 0.3]

In [4]:

    

b = np.array([0.3, 0.3])
print(b)


    

    




[0.3 0.3]

In [5]:

    

print(a == b)


    

    




[ True False]

In [6]:

    

np.set_printoptions(precision=18)


    

In [7]:

    

print(a)


    

    




[0.3                 0.30000000000000004]

In [8]:

    

print(np.isclose(a, b))


    

    




[ True  True]

In [9]:

    

print(np.isclose(a, 0.3))


    

    




[ True  True]

In [10]:

    

print(np.isclose(0.1 + 0.1 + 0.1, 0.3))


    

    




True

In [11]:

    

print(np.isclose(100, 101))


    

    




False

In [12]:

    

print(np.isclose(100, 101, rtol=0, atol=1))


    

    




True

In [13]:

    

print(np.isclose(np.nan, np.nan))


    

    




False

In [14]:

    

print(np.isclose(np.nan, np.nan, equal_nan=True))


    

    




True

In [15]:

    

print(np.isclose(np.nan, 100, equal_nan=True))


    

    




False

In [16]:

    

a_nan = np.array([np.nan, 1, 2])
print(a_nan)


    

    




[nan  1.  2.]

In [17]:

    

b_nan = np.array([np.nan, np.nan, 2])
print(b_nan)


    

    




[nan nan  2.]

In [18]:

    

print(np.isclose(a_nan, b_nan))


    

    




[False False  True]

In [19]:

    

print(np.isclose(a_nan, b_nan, equal_nan=True))


    

    




[ True False  True]