In this article, we will discuss how to fix NameError np that is not defined in Python.
When we imported the NumPy module without alias and used np in the code, the error comes up.
Example: Code to depict error
Python3
# import numpymodule import numpy # create numpy array a = np.array([1, 2, 3, 45]) # display a |
Output:
name 'np' is not defined
Here np is an alias of the NumPy module so we can either import the NumPy module with the alias or import NumPy without the alias and use the name directly.
Method 1: By using the alias when importing the numpy
We can use an alias at the time of import to resolve the error.
Syntax:
import numpy as np
Example: Program to import numpy as alias
Python3
# import numpymodule import numpy as np # create numpy array a = np.array([1, 2, 3, 45]) # display a |
Output:
array([ 1, 2, 3, 45])
Method 2: Using NumPy directly
We can use NumPy module directly to use in a data structure.
Syntax:
import numpy
Example: Using NumPy directly
Python3
# import numpymodule import numpy # create numpy array a = numpy.array([1, 2, 3, 45]) # display a |
Output:
array([ 1, 2, 3, 45])
