**NumPy**, which stands for Numerical Python, is a scientific computing library built on top of the Python programming language.

The most common way to import NumPy into your Python environment is to use the following syntax:

import numpy as np

The **import numpy** portion of the code tells Python to bring the NumPy library into your current environment.

The **as np** portion of the code then tells Python to give NumPy the alias of **np**. This allows you to use NumPy functions by simply typing np.function_name rather than numpy.function_name.

Once you’ve imported NumPy, you can then use the functions built in it to quickly create and analyze data.

**How to Create a Basic NumPy Array**

The most common data type you’ll work with in NumPy is the **array**, which can be created by using the **np.array()** function.

The following code shows how to create a basic one-dimensional NumPy array:

**import numpy as np
#define array
x = np.array([1, 12, 14, 9, 5])
#display array
print(x)
[ 1 12 14 9 5]
#display number of elements in array
x.size
5**

You can also create multiple arrays and perform operations on them such as addition, subtraction, multiplication, etc.

**import numpy as np
#define arrays
x = np.array([1, 12, 14, 9, 5])
y = np.array([2, 3, 3, 4, 2])
#add the two arrays
x+y
array([ 3, 15, 17, 13, 7])
#subtract the two arrays
x-y
array([-1, 9, 11, 5, 3])
#multiply the two arrays
x*y
array([ 2, 36, 42, 36, 10])
**

Check out the absolute beginner’s guide to NumPy for a detailed introduction to all of the basic NumPy functions.

**Potential Errors when Importing NumPy**

One potential error you may encounter when importing NumPy is:

**NameError: name 'np' is not defined
**

This occurs when you fail to give NumPy an alias when importing it. Read this tutorial to find out how to quickly fix this error.

**Additional Resources**

If you’re looking to learn more about NumPy, check out the following resources:

Complete List of Statology Python Guides

Online NumPy documentation page

Official NumPy Twitter page