שימו לב: על מנת להריץ את התאים ב-Live Code, יש לייבא תחילה את ספרית numpy ע”י הרצת השורת הבאה:

import numpy as np

סיכום פונקציות נפוצות בnumpy

category	name	use
Creation
	np.array(obj)	create a new ndarray from an object like a list or tuple
	np.zeros(shape, dtype)	create a new ndarray filled with zeros
	np.ones(shape, dtype)	create a new ndarray filled with ones
	np.arange(start, stop, step)	create an ndarray with evenly spaced values
	np.random.random(size)	create an ndarray with random floats in [0, 1)
	np.random.randint(low, high, size)	create an ndarray with random integers in a given range
Typing
	np.uint8	unsigned integer type between 0 and 255
	np.int_	default integer type
Attribute access
	array.shape	tuple describing the shape of the array
	array.T	transpose of the array
Array manipulation
	np.reshape(array, new_shape)	change the shape of an array without changing its data
	np.sort(array, axis)	return a sorted copy of an array
	np.clip(array, min, max)	limit values in an array to a given range
	np.hstack((a, b, …))	stack arrays horizontally (column wise)
	np.vstack((a, b, …))	stack arrays vertically (row wise)
Numerical operations
	np.abs(array)	element wise absolute value
	np.log(array)	natural logarithm, element wise
	np.log2(array)	base 2 logarithm, element wise
	np.log10(array)	base 10 logarithm, element wise
Aggregation
	array.sum(axis)	sum of elements, optionally along an axis
	array.mean(axis)	mean of elements, optionally along an axis
	array.median(axis)	median value, optionally along an axis
	array.max(axis)	maximum value, optionally along an axis
	array.min(axis)	minimum value, optionally along an axis
	array.argmax(axis)	index of the maximum value
	array.argmin(axis)	index of the minimum value
	np.maximum(a, b)	element wise maximum between two arrays
	np.minimum(a, b)	element wise minimum between two arrays
	array.any(axis)	True if any element is True
	array.all(axis)	True if all elements are True
	array.nonzero()	indices of non zero elements
	np.histogram(array, bins)	compute histogram counts per bin