find size of numpy array code example

Example 1: numpy get array size

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)

Example 2: numpy array length

np_array.size

Example 3: length of a matrix in python

matrix = [[1, 2]]
rows = len(matrix) # Height.
columns = len(matrix[0]) # Width.
print(rows)
print(columns)