Python

Python is the older of the two languages. In programming language evolution, it is common to maintain backward compatibility indefinitely. This is not the case with Python. Python versions are largely compatible but have enough functionality- and syntax-breaking differences that they can be treated as different languages. Python is adapted because of Simplicity, Open source, object-oriented and General purpose language. It is an interpreted language available on many platforms, making it a portable option for general development.
Java on the other hand
Its attraction and value is its portability and relative efficiency. Java is a compiled language, unlike C/C+. Its execution model is more machine-centered than purely interpreted languages. Java is more than just a language and libraries. It is also a virtual machine and, therefore, an ecosystem. The Java Virtual Machine (JVM) is an idealized and portable platform for running Java code. Rather than worrying about hardware specifics and having to port code to new platforms, the promise of Java has been written once, run anywhere. That is so that as long as a JVM is present, anything compiled into its bytecode can run and interact easily with anything else written for the JVM.

Python is a widely used high-level programming language for general-purpose programming, created by Guido van Rossum and first released in 1991. Python has a design philosophy which emphasises code readability and a syntax which allows programmers to express concepts in fewer lines of code than possible in languages such as C+ or Java.
Python is a highly used and all-purpose programming language which is dynamic in nature with extensive use in Web development. Being dynamic in nature means that developer can write and run the code without the need of a compiler. This is a high-level or advanced language that is considered easy for beginners to understand and learn.