According to Wikipedia
Python is an interpreted high-level general-purpose programming language.
Python was created by Guido van Rossum and released in 1991. It supports multiple programming paradigms like object-oriented, procedural and functional. Python is also dynamically-typed and garbage-collected. Python was initially written/implemented using C language called CPython and is the default/standard ever since but there are other implementations in Java, .Net, etc. Its philosophy revolves around code readability and code simplicity, you can also check zen of python for more on that.
Python is widely used in Web-Development(flask, django, fastapi), Android/Windows/IOS/OSX application development(kivy), Big-Data Processing/Databases(Pyspark, Pandas), Machine learning(pytorch, tensorflow, sklearn), Mathematical/Scientific libraries(numpy, scipy), DevOps, Security, etc. The current/latest version is Python3 which was released in 2008 and is still relevant (as of 2022), as Python2 was discontinued on 1 Jan 2020, Python3 is the way to go.
There is a fair amount of debate around "Python is a slow language" mostly due to being a high-level language, this article has some answers, but for most part that does not affect its usability/credibility, it is the most preferred programming language and is still growing more and more popular (as of 2022). There are other languages which are good enough to be Python's successor such as Rust, GO and Julia. These languages do have potential to eventually replace Python, at least in some domains in the coming time, but it is yet to be seen.