Home/ Questions/How to solve the TypeError: Only Size-1 Arrays Can Be Converted To Python Scalars?
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Chelsie Macejkovic
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Asked: 2022-06-14T16:04:47+00:00 In:

How to solve the TypeError: Only Size-1 Arrays Can Be Converted To Python Scalars?

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Hello everyone, I need your help. I am attempting to write a python that returns error. I don’t know what I’m doing wrong but the “TypeError: Only Size-1 Arrays Can Be Converted To Python Scalars” shows up. My detail code is:

import numpy as np
 
x = np.array([1, 2, 3, 4])
x = np.float(x)
Output:

TypeError: only size-1 arrays can be converted to Python scalars

Please guide me how to solve this problem. Thank you so much!

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1 Answer

  1. Best Answer
    Expert

    The cause: Because you’re utilizing Single Conversion Functions. These Numpy functions take a single Numpy element as input and alter its datatype internally. Such methods will throw an error if you try to send an integer array from Numpy to a parameter.

    Solution: To fix the error, you should use Numpy Vectorize Function. Between the algorithm and the methods, you can put numpy.vectorize(). This technique handles a Numpy array like a python map function, avoids any type errors, and transforms all the values to float.

    import numpy as np

vector = np.vectorize(np.float)
x = np.array([1, 2, 3])
x = vector(x)
print(x)

    Output:

    [1. 2. 3.]

     

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