Home/ Questions/Error: valueerror: setting an array element with a sequence.- How to fix it?
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Bradford Zieme
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Asked: 2022-06-07T16:03:13+00:00 In:

Error: valueerror: setting an array element with a sequence.- How to fix it?

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I had used some code samples in another forum, but it could not improve the problem. My problem is the “error: valueerror: setting an array element with a sequence.” and how to solve it? While I run this program:

# In this program we are demonstrating how mismatch
# of data-type can cause value error

import numpy

# Creating array
array1 = ["Geeks", "For"]

# Default Data type of Array
Data_type = str


np_array = numpy.array(array1, dtype=Data_type)
# This cause error
np_array[1] = ["for", "Geeks"]
print(np_array)

I have got this error:

File “C:\\Users\\computers\\Downloads\\he.py”, line 15, in <module>

np_array[1] = [“for”,”Geeks”];

ValueError: setting an array element with a sequence

What does the message mean? Can you advise me to fix it? If you have other better answers, leave them in the answer box below. Thanks!

setting an array element with a sequence
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1 Answer

  1. Best Answer
    Expert

    The cause:

    You have got this error because an array as a element is being assigned to another array which accepts string data-type.

    Solution:

    This error willed be fixed when you matchthe data-type of value with an array and then assign it as element of array.

    You can use below syntax to do this:

    if np_array.dtype == type( Variable ):
expression;

    Your code after fixed will like as:

    # In this program we fix error by mismatch
# of data-type

import numpy

# Creating array
array1 = ["Geeks", "For"]

# Default Data type of Array
Data_type = str


np_array = numpy.array(array1, dtype=Data_type)

Variable = ["for", "Geeks"]

# First we match the data-type
if np_array.dtype == type(Variable):
np_array[1] = Variable
else:
print("Variable value is not the type of numpy array")
print(np_array)
    Variable value is not the type of numpy array
['Geeks' 'For']
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