Introduction
Even should you’re a seasoned Python developer, you will sometimes encounter errors that may be fairly complicated. One such error is the AttributeError: module object has no attribute 'Serial'. This Byte will enable you perceive and resolve this subject.
Understanding the AttributeError
The AttributeError in Python is raised once you attempt to entry or name an attribute {that a} module, class, or occasion doesn’t have. Particularly, the error AttributeError: module object has no attribute 'Serial' suggests that you just’re making an attempt to entry the Serial attribute from a module that does not possess it.
As an example, if in case you have a module named serial and also you’re making an attempt to make use of the Serial attribute from it, you may encounter this error. Here is an instance:
import serial
ser = serial.Serial('/dev/ttyUSB0') # This line causes the error
On this case, the serial module you are importing would not have the Serial attribute, therefore the AttributeError.
Notice: It is essential to grasp that Python is case-sensitive. Serial and serial aren’t the identical. If the attribute exists however you are utilizing the unsuitable case, you will additionally encounter an AttributeError.
Fixes for the Error
The excellent news is that this error is normally a fairly simple repair, even when it appears very complicated at first. Let’s discover a number of the options.
Set up the Appropriate pyserial Module
One of the vital widespread causes for this error is the wrong set up of the pyserial module. The Serial attribute is part of the pyserial module, which is used for serial communication in Python.
You might need put in a module named serial as a substitute of pyserial (that is extra widespread than you assume!). To repair this, you should uninstall the wrong module and set up the right one.
$ pip uninstall serial
$ pip set up pyserial
After operating these instructions, your subject could also be resolved. Now you may import Serial from pyserial and use it in your code:
from pyserial import Serial
ser = Serial('/dev/ttyUSB0') # This line not causes an error
If this did not repair the error, preserve studying.
Rename your serial.py File
For a way a lot Python I’ve written in my profession, you’d assume that I would not make this easy mistake as a lot as I do…
One other risk is that the Python interpreter will get confused when there is a file in your undertaking listing with the identical title as a module you are making an attempt to import. That is one other widespread supply of the AttributeError error.
To illustrate, for example, you’ve got a file named serial.py in your undertaking listing (or possibly your script itself is called serial.py). Once you attempt to import serial, Python may import your serial.py file as a substitute of the pyserial module, resulting in the AttributeError.
The answer right here is straightforward – rename your serial.py file to one thing else.
$ mv serial.py my_serial.py
Conclusion
On this Byte, we have explored two widespread causes of the AttributeError: module object has no attribute 'Serial' error in Python: putting in the unsuitable pyserial module, and having a file in your undertaking listing that shares a reputation with a module you are making an attempt to import. By putting in the right module or renaming conflicting information, it’s best to be capable of get rid of this error.
