Difference between bytes and bytearray in Python

bytes

• It returns the "bytes" Object. 
• It is immutable. (cannot be modified once declared).
• It is the sequence of a small integer whose range is from 0<=x<256.

bytes([source [, encoding [, errors]]])

 bytearray

• This method returns the bytearray object (i.e. array of given bytes).
• It is a mutable(can be modified) sequence of bytes.
• It is the sequence of integers in the range 0 <= x < 256.

bytearray([source[,encoding [,errors]]])