Python is a high-level programming language used in various fields including data analysis, artificial intelligence, machine learning, scientific computing, and web development. Python is easy to understand, has a simple syntax, and is widely used. Learning to code in Python can be a valuable skill in many industries. Fortunately, there are many free resources available for anyone interested in learning how to code in Python. Here are some of the best courses and apps to learn how to code Python for free.

1. Codecademy: Codecademy offers a free Python course that provides a comprehensive introduction to the language. The course takes approximately 13 hours to complete and is self-paced, so you can learn at your own speed.

2. Coursera: Coursera offers several free Python courses taught by professors at top universities. The courses range from beginner to advanced, so you can choose a course that fits your level of experience.

3. edX: edX also offers several free Python courses taught by professors at top universities. The courses range from beginner to advanced, so you can choose a course that fits your level of experience.

4. MIT OpenCourseWare: MIT OpenCourseWare offers dozens of free courses, including several Python courses. The courses are taught by MIT professors and cover topics ranging from introductory Python to more advanced topics such as machine learning and artificial intelligence.

5. SoloLearn: SoloLearn is a mobile app that offers free coding lessons in several programming languages, including Python. The app provides a gamified learning experience that is both fun and educational.

6. Py: Py is another mobile app that offers free Python lessons. The app is designed to be beginner-friendly and provides step-by-step guidance to help you learn how to code in Python.

7. DataCamp: DataCamp offers a free Python course that provides a comprehensive introduction to the language with an emphasis on data analysis and manipulation. The course is self-paced, so you can learn at your own speed.

In conclusion, learning how to code in Python is an important skill that can enhance your career in various fields. Fortunately, there are many free resources available to help you learn how to code Python. Whether you prefer online courses or mobile apps, there is something for everyone. With dedication and practice, you can learn how to code in Python for free.