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size of a NumPy array in Python

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Long Lizard answered on July 15, 2020 Popularity 10/10 Helpfulness 3/10

answer size of a NumPy array in Python

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size of a NumPy array in Python

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a = np.arange(3)
b = np.arange(12).reshape((3, 4))
c = np.arange(24).reshape((2, 3, 4))

# it returns the total number of elements
print(a.size) # 3
print(b.size) # 12
print(c.size) # 24

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Tags: numpy python size

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Contributed on Oct 19 2022

Long Lizard

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numpy array length

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np_array.size

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Source: Grepper

Tags: numpy nump

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Contributed on Jul 15 2020

Impossible Impala

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python numpy array size of n

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numpy.array([0] * n) #creates an int64 numpy array of size n with each element having a vaule of 0
numpy.array([0] * n, dtype = '<type>') #creates a numpy array of size n with a type of <type>

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Source: stackoverflow.com

Tags: n

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Contributed on Oct 07 2020

Soulless Creature

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number of dimensions of NumPy array in Python

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a = np.arange(3)
b = np.arange(12).reshape((3, 4))
c = np.arange(24).reshape((2, 3, 4))

print(a.ndim) # 1
print(b.ndim) # 2
print(c.ndim) # 3

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Source: note.nkmk.me

Tags: dimensions d

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Contributed on Oct 19 2022

Long Lizard

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numpy get array size

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myArray.shape # Returns the number of rows, columns etc. (depends on dimensions how many numbers you get)

print(a_1d.shape)
# (3,)

print(type(a_1d.shape))
# <class 'tuple'>

print(a_2d.shape)
# (3, 4)

print(a_3d.shape)
# (2, 3, 4)

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Source: note.nkmk.me

Tags: get

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Contributed on Nov 20 2020

Flyhouse_Squarewheel

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.size() method in Numpy

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# Python program explaining
# numpy.size() method
 
# importing numpy
import numpy as np
 
# Making a random array
arr = np.array([[1, 2, 3, 4], [5, 6, 7, 8]])
 
# count the number of elements along the axis.
# Here rows and columns are being treated
# as elements
 
#gives no. of rows along x-axis
print(np.size(arr, 0))
 
#gives no. of columns along y-axis
print(np.size(arr, 1))

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Source: www.geeksforgeeks.org

Tags: numpy nump

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Contributed on Oct 10 2022

PythonPower

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np array size

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x = np.zeros((3, 5, 2), dtype=np.complex128)
>>> x.size
30
>>> np.prod(x.shape)
30

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Source: numpy.org

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Contributed on Aug 18 2022

Athul Mathew

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length of a NumPy array in Python

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a = np.arange(3)
b = np.arange(12).reshape((3, 4))
c = np.arange(24).reshape((2, 3, 4))

# it returns the size of the first dimension (=np.shape[0])
print(len(a)) # 3
print(len(b)) # 3
print(len(c)) # 2

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Source: note.nkmk.me

Tags: numpy nump

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Contributed on Oct 19 2022

Long Lizard

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np create array of size

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import numpy as np

np_array = np.empty(5)

print(np_array)

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Source: codethreads.dev

Tags: np python size

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Contributed on Dec 28 2022

codethreads dev

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size of a NumPy array in Python

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python numpy array size of n

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