IndexError: invalid index to scalar variable ( Solved )

IndexError is an exception error in python you get when you try to index the list or array and the length of it is out of the range. Most programmers get this type of error while accessing the element from the array or list. In this tutorial, you will know how to solve the IndexError: invalid index to scalar variable error in a simple way.

Why does the IndexError: invalid index to scalar variable Error occurs?

Most of the time you will get the error when you are trying to wrongly access the element of the array. For example, you have created a variable of scalar type but you are indexing the element like the two or more dimensions.

Let’s understand it deeply. Suppose I have created a scalar value in numpy. If I am trying to access it wrongly then I will get the invalid index to scalar variable error.

You will get the error when you will run the below lines of code.

import numpy as np
x = np.int32(10)
print(x[0])

Output

index error when accessing the scalar value

In the same way, you will get the invalid index to the scalar variable when you try to access the element of the numpy array like it is a multi-dimensional array.

import numpy as np
array = np.array([1,2,3,4])
print(array[0][0])

Output

index error when accessing the numpy array

Solution of the invalid index to scalar variable Error

The solution to this indexerror is very simple. Make sure to identify the type of the array whether it is a scalar and single-dimensional or multi-dimensional array.

Taking the same example as the above, you don’t have to use the index in the square bracket to access the value. You can access directly using the variable name only.

import numpy as np
x = np.int32(10)
print(x)

Output

And if it is an array of single-dimensional then don’t use the square bracket two times to access the element. Just use the single square bracket with the index inside it.

import numpy as np
array = np.array([1,2,3,4])
print(array[0])

Output

Conclusion

In the name itself IndexError you can get the idea of why you are getting the error. Most of cases the error are due to wrong accessing of the element. The error index to a scalar variable is the same. To solve this error you have first identified the element is of scalar or another dimension and then use the correct way to access it.

I hope you have liked this tutorial. If you have any queries then you can contact us for more help.