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[Solved] Numpy ValueError: setting an array element with a sequence. This message may appear without the existing of a sequence?

Hello Guys, How are you all? Hope You all Are Fine. Today I get the following error Numpy ValueError: setting an array element with a sequence. This message may appear without the existing of a sequence? in python. So Here I am Explain to you all the possible solutions here.

Without wasting your time, Let’s start This Article to Solve This Error.

How Numpy ValueError: setting an array element with a sequence. This message may appear without the existing of a sequence Error Occurs?

Today I get the following error Numpy ValueError: setting an array element with a sequence. This message may appear without the existing of a sequence? in python.

How To Solve Numpy ValueError: setting an array element with a sequence. This message may appear without the existing of a sequence Error ?

  1. How To Solve Numpy ValueError: setting an array element with a sequence. This message may appear without the existing of a sequence Error ?

    To Solve Numpy ValueError: setting an array element with a sequence. This message may appear without the existing of a sequence Error Don't think of it as a cryptic error, it's simply a phrase. What line is giving the problem?

  2. Numpy ValueError: setting an array element with a sequence. This message may appear without the existing of a sequence?

    To Solve Numpy ValueError: setting an array element with a sequence. This message may appear without the existing of a sequence Error Don't think of it as a cryptic error, it's simply a phrase. What line is giving the problem?

Solution 1

You’re getting the error message

ValueError: setting an array element with a sequence.

because you’re trying to set an array element with a sequence. I’m not trying to be cute, there — the error message is trying to tell you exactly what the problem is. Don’t think of it as a cryptic error, it’s simply a phrase. What line is giving the problem?

kOUT[i]=func(TempLake[i],Z)

This line tries to set the ith element of kOUT to whatever func(TempLAke[i], Z) returns. Looking at the i=0 case:

In [39]: kOUT[0]
Out[39]: 0.0

In [40]: func(TempLake[0], Z)
Out[40]: array([ 0.,  0.,  0.,  0.])

You’re trying to load a 4-element array into kOUT[0] which only has a float. Hence, you’re trying to set an array element (the left hand side, kOUT[i]) with a sequence (the right hand side, func(TempLake[i], Z)).

Probably func isn’t doing what you want, but I’m not sure what you really wanted it to do (and don’t forget you can usually use vectorized operations like A*B rather than looping in numpy.) That should explain the problem, anyway.

Solution 2

I believe python arrays just admit values. So convert it to list:

kOUT = np.zeros(N+1)
kOUT = kOUT.tolist()

Summery

It’s all About this issue. Hope all solution helped you a lot. Comment below Your thoughts and your queries. Also, Comment below which solution worked for you? Thank You.

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