Why am I getting 'unhashable type: 'numpy.ndarray' in Python, when making a plot?

Question

I'm trying to simply make a plot for the equation written below:

import matplotlib.pyplot as plt
import numpy as np

# 100 linearly spaced numbers
x = np.linspace(0,100,100)
y= 1/{np.exp(1/x)+1}

#plot the function
plt.plot(x,y, 'r')

#show the plot
plt.show()

But whenever I use this code, I get the message:

unhashable type: 'numpy.ndarray'

I have searched for the reason for this but the solutions I have seen such as in Python unhashable type: 'numpy.ndarray', doesn't seem to be the same as mine.

How can I correct this and avoid it happening?

Luke B · Accepted Answer · 2020-07-27 17:47:14Z

1

You are using brackets where you should not use it. You need to replace

y= 1/{np.exp(1/x)+1}

by this

y= 1/(np.exp(1/x)+1)

answered Jul 27, 2020 at 17:47

Luke B

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2 Comments

user7077252 Over a year ago

Thank you so much, I haven't used python in a very long time and seem to have forgotten it all

Luke B Over a year ago

Happy to help. If this answer or any other one solved your issue, please mark it as accepted.

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