Introduction to Numpy

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Numpy

introducrion to numpy || by ProgGeek

Numpy stand for "Numerical Python". Numpy contain powerful n-dimesions array.it is also usefull in linear algebra,random number capabiity etc.

installation of numpy : 

to install python numpy

step1 : open command prompt(cmd)

step2 : write command "pip install numpy" and execute.

step3: once you installed open any ide and import numpy "import numpy"

Numpy array: 

numpy array is powerful n-dimenssion array which are form in rows and colums.

import numpy:

>>> import numpy as np

Array (1-d,2-d) : 

>>> print(np.array([1,2,3]))
[1 2 3]

>>> print(np.array([[1,2,3],[1,2,3]]))
[[1 2 3]
 [1 2 3]]

Ones and Zeros Array using numpy:

>>> ones = np.ones([3,3])
>>> print(ones)
[[1. 1. 1.]
 [1. 1. 1.]
 [1. 1. 1.]]

>>> zeros = np.zeros([11,20])
>>> print(zeros)
[[0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
 [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
 [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
 [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
 [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
 [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
 [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
 [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
 [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
 [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
 [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]]

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