In [1]:

    

import numpy as np


    

In [2]:

    

ii64 = np.iinfo(np.int64)
print(type(ii64))


    

    




<class 'numpy.iinfo'>

In [3]:

    

print(ii64)


    

    




Machine parameters for int64
---------------------------------------------------------------
min = -9223372036854775808
max = 9223372036854775807
---------------------------------------------------------------

In [4]:

    

print(ii64.max)


    

    




9223372036854775807

In [5]:

    

print(type(ii64.max))


    

    




<class 'int'>

In [6]:

    

print(ii64.min)


    

    




-9223372036854775808

In [7]:

    

print(ii64.bits)


    

    




64

In [8]:

    

print(np.iinfo('int16'))


    

    




Machine parameters for int16
---------------------------------------------------------------
min = -32768
max = 32767
---------------------------------------------------------------

In [9]:

    

print(np.iinfo('i4'))


    

    




Machine parameters for int32
---------------------------------------------------------------
min = -2147483648
max = 2147483647
---------------------------------------------------------------

In [10]:

    

print(np.iinfo(int))


    

    




Machine parameters for int64
---------------------------------------------------------------
min = -9223372036854775808
max = 9223372036854775807
---------------------------------------------------------------

In [11]:

    

print(np.iinfo('uint64'))


    

    




Machine parameters for uint64
---------------------------------------------------------------
min = 0
max = 18446744073709551615
---------------------------------------------------------------

In [12]:

    

i = 100
print(type(i))


    

    




<class 'int'>

In [13]:

    

print(np.iinfo(i))


    

    




Machine parameters for int64
---------------------------------------------------------------
min = -9223372036854775808
max = 9223372036854775807
---------------------------------------------------------------

In [14]:

    

ui = np.uint8(100)
print(type(ui))


    

    




<class 'numpy.uint8'>

In [15]:

    

print(np.iinfo(ui))


    

    




Machine parameters for uint8
---------------------------------------------------------------
min = 0
max = 255
---------------------------------------------------------------

In [16]:

    

a = np.array([1, 2, 3], dtype=np.int8)
print(type(a))


    

    




<class 'numpy.ndarray'>

In [17]:

    

# print(np.iinfo(a))
# ValueError: Invalid integer data type 'O'.


    

In [18]:

    

print(np.iinfo(a.dtype))


    

    




Machine parameters for int8
---------------------------------------------------------------
min = -128
max = 127
---------------------------------------------------------------

In [19]:

    

print(np.iinfo(a[0]))


    

    




Machine parameters for int8
---------------------------------------------------------------
min = -128
max = 127
---------------------------------------------------------------

In [20]:

    

# print(np.iinfo(np.float64))
# ValueError: Invalid integer data type 'f'.


    

In [21]:

    

fi64 = np.finfo(np.float64)
print(type(fi64))


    

    




<class 'numpy.finfo'>

In [22]:

    

print(fi64)


    

    




Machine parameters for float64
---------------------------------------------------------------
precision =  15   resolution = 1.0000000000000001e-15
machep =    -52   eps =        2.2204460492503131e-16
negep =     -53   epsneg =     1.1102230246251565e-16
minexp =  -1022   tiny =       2.2250738585072014e-308
maxexp =   1024   max =        1.7976931348623157e+308
nexp =       11   min =        -max
---------------------------------------------------------------

In [23]:

    

print(fi64.max)


    

    




1.7976931348623157e+308

In [24]:

    

print(type(fi64.max))


    

    




<class 'numpy.float64'>

In [25]:

    

print(fi64.min)


    

    




-1.7976931348623157e+308

In [26]:

    

print(fi64.eps)


    

    




2.220446049250313e-16

In [27]:

    

print(fi64.bits)


    

    




64

In [28]:

    

print(fi64.iexp)


    

    




11

In [29]:

    

print(fi64.nmant)


    

    




52