The same principle applies when switching between different programming languages. When switching between projects, you need to juggle between different contexts; when switching between languages, you need to juggle between different syntax, data structures, and ecosystems. To demonstrate, the following table illustrates some key differences between Python and JavaScript:
| Python | JavaScript |
| Has many data types, including None, Boolean, int, float, complex, list, tuple, range, str, bytes, bytearray, memoryview, set, frozenset, dict, and many more | Has seven data types: undefined, null, Boolean, number, string, symbol, and object |
| Statements are grouped by indentation | Statements are grouped by blocks, expressed ... |
