Python has a method called len() that gives us the length of any composite object. To get the length of a string, just pass the string to the len() call.
example
print(len('Hello World!'))Output
12
If you want the size of the string in bytes, you can use the getsizeof() method from the sys module.
example
from sys import getsizeof
getsizeof('Hello World!')Output
33
You can read more about it at sys.getsizeof()