Dreampie!

IPython is an interactive shell for the Python programming language that offers enhanced introspection, additional shell syntax, syntax highlighting, tab completion and rich history. It is a component of the SciPy package.

Light Table is a new interactive IDE that lets you modify running programs and embed anything from websites to games. It provides the real time feedback we need to not only answer questions about our code, but to understand how our programs really work.

Default IDE which come installed with the Python programming language. It aims to be simple and intuitive, and is especially useful for programmers just learning Python. The editor has syntax highlighting, search features, class browsers, and runs Python scripts in a separate, protected process.

Wing IDE is a commercial IDE for Python. It has syntax highlighting, code completion via analysis of Python files, Django integration, networked debugging, and more. There is also some integration with version control systems, though this feature is far from perfect.

bpython is a fancy interface to the Python interpreter for Unix-like operating systems (I hear it works fine on OS X). It is released under the MIT License. It has the following features:

ptpython - A better Python REPL