Python is a versatile and powerful language that can be used for a wide variety of tasks. In this book, we'll look at how Python can be used for various tasks that will make your life easier. Python as a “glue” language: it helps us combine skills and programs we already know how to use by allowing us to easily convert data from one format to another. This means that we can take data in one format that we don’t have tools to manipulate and change it into data for tools that we’re comfortable with. Whether we need to process a CSV, web page, or JSON file, Python can help us get the data into a format we can use. Python for stitching together other things. Sometimes we need to do more than process the data in an Excel file we’ve been sent. For example, we may want to fetch some pages from the Web, or work with an online API, or control our computer itself (such as renaming a batch of files, or changing how our operating system works). Python is great at these tasks.