Learn Enough Python to Be Dangerous: Software Development, Flask Web Apps, and Beginning Data Science with Python
All You Need to Know, and Nothing You Don't, to Solve Real Problems with Python Python is the dominant programming language for data science and an ideal first programming language for web development and many other uses. You should learn Python, but you don't need to learn "everything" to get started, just how to use it efficiently to solve real problems.
Source: informit.com