AttributeError: ‘list’ object has no attribute ‘astype’

Are you facing the error “list object has no attribute astype“? Well, you have come to the right place. In this tutorial, I will show you how to resolve this error.

The error “list object has no attribute astype” occurs when we try to call “astype” method on your list.

[Fixed] AttributeError: ‘list’ object has no attribute ‘astype’

To get rid of this error you need to pass the list to “numpy.array()” before calling the astype().

You will get this error like this:

my_list = [1, 2, 5.18, 1.23]

# AttributeError: 'list' object has no attribute 'astype'
result = my_list.astype(int)

We can use ‘numpy.array()‘ like this:

import numpy as np

my_list = [1, 2, 5.18, 1.23]
np_array = np.array(my_list, dtype=np.int32)

print(np_array) 

Now we have the NumPy array, and we can apply the astype to this NumPy array. We used “dtype” in the above code. This keyword is used to set the data type for list elements.

[Fixed]: AttributeError: ‘int’ object has no attribute ‘append’

import numpy as np

my_list = [1, 2, 2.5, 3.6]

np_array = np.array(my_list, dtype=np.int32)

print(np_array)

result = np_array.astype(np.float32)

print(result)

If you pass a class to the dir() function, it returns a list of names of the class’s attributes, and recursively of the attributes of its bases.

[Fixed] AttributeError: list object has no attribute

If you are facing the error “AttributeError: list object has no attribute” its means you are trying to access an attribute that is not in the list.

You can see the list of names of class attributes using the ‘dir()‘ function. As shown in the code below:

my_list = ['EHTISHAM', 'ALI', 'AWAN']

print(dir(my_list))  

#OUTPUT: [... 'append', 'clear', 'copy', 'count', 'extend', 'index',
'insert', 'pop', 'remove', 'reverse', 'sort' ...]

Conclusion on AttributeError: ‘list’ object has no attribute ‘astype’

Programmers, In this tutorial we discussed how we can solve the error “AttributeError: ‘list’ object has no attribute ‘astype’“. I hope this solved your problem, if you are still getting the error please let us know in the comments section.

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