AttributeError: 'float' object has no attribute 'X' (Python)


Borislav Hadzhiev

Wed Apr 20 20222 min read


Photo by Atika Dhaib

AttributeError: 'float' object has no attribute 'X' (Python) #

The Python "AttributeError: 'float' object has no attribute" occurs when we try to access an attribute that doesn't exist on a floating-point number, e.g. 5.4. To solve the error, make sure the value is of the expected type before accessing the attribute.

attributeerror float object has no attribute

Here is an example of how the error occurs.
example = 5.4 print(type(example)) # 👉️ <class 'float'> # ⛔️ AttributeError: 'float' object has no attribute 'split' result = example.split('.') print(result)

We tried to call the split() method on a float object and got the error.

If you print() the value you are accessing the attribute on, it will be a float.

To solve the error, you need to track down where exactly you are setting the value to a float in your code and correct the assignment.

To solve the error in the example, we would have to convert the floating-point number to a string to be able to access the string-specific split() method.
example = 5.4 result = str(example).split('.') print(result) # 👉️ ['5', '4']

If you are trying to use the round() function, you have to pass the float as an argument to the function, not call the function on the float.
example = 5.4 result = round(example) print(result) # 👉️ 5

Instead of accessing the round() function on the float, e.g. example.round(), we have to pass the floating point number as an argument to the round() function.

If you need to check whether an object contains an attribute, use the hasattr function.
example = 5.4 if hasattr(example, 'round'): print(example.round) else: print('Attribute is not present on object') # 👉️ this runs

The hasattr function takes the following 2 parameters:

objectThe object we want to test for the existence of the attribute
nameThe name of the attribute to check for in the object

The hasattr() function returns True if the string is the name of one of the object's attributes, otherwise False is returned.

Using the hasattr function would handle the error if the attribute doesn't exist on the object, however you still have to figure out where the variable gets assigned a float value in your code.

A good way to start debugging is to print(dir(your_object)) and see what attributes the object has.

Here is an example of what printing the attributes of a float looks like.
example = 5.4 # [..., 'as_integer_ratio', 'conjugate', 'fromhex', 'hex', 'imag', 'is_integer', 'real', ...] print(dir(example))

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

If you try to access any attribute that is not in this list, you would get the "AttributeError: float object has no attribute" error.

To solve the error, either convert the value to the correct type before accessing the attribute, or correct the type of the value you are assigning to the variable before accessing any attributes.

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