Typeerror: only length-1 arrays can be converted to python scalars

Dung Do Tien Mar 23 2021 58

Hello, I have some code with Python as below:

 import numpy as np
import matplotlib.pyplot as pyp

def find(x):
    return np.int(x)

x = np.arange(1, 15.1, 0.1)
pyp.plot(x, find(x))
pyp.show()

When I running this code, I got an error Typeerror: only length-1 arrays can be converted to Python scalars.

How can I fix this bug?

Have 1 answer(s) found.
  • J

    Jide Mar 23 2021

    This error is raised when the function expects a single value but you pass an array instead.

    If you want to apply a function that accepts a single element to every element in an array, you can use np.vectorize:

     import numpy as np
    import matplotlib.pyplot as pyp
    
    def f(x):
        return np.int(x)
    v = np.vectorize(f)
    x = np.arange(1, 15.1, 0.1)
    pyp.plot(x, v(x))
    pyp.show()

    I hope it helpful for you.

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