ptpython

A better Python REPL

pip install ptpython

Ptpython is an advanced Python REPL. It should work on all Python versions from 2.6 up to 3.5 and work cross platform (Linux, BSD and OS X, Window).

Installation

To install it using pip:

pip install ptpython

Start it by typing ptpython.

Features

• Syntax highlighting.
• Multiline editing (the up arrow works)
• Autocompletion.
• Mouse support. [1]
• Support for color schemes.
• Support for bracketed paste [2].
• Both Vi and Emacs key bindings.
• Support for double width (Chinese) characters.
• ... and many other stuff.

[1] Disabled by default. (Enable in the menu.)

[2] If the terminal supports it (most terminals do), this allows pasting without going into paste mode. It will keep the indentation.

More screenshots

The configuration menu:

The history page and its help:

Autocompletion:

Embedding the REPL

Embedding the REPL in any Python application is easy:

from ptpython.repl import embed
embed(globals(), locals())

Multiline editing

Multi-line editing mode will automatically turn on when you press enter after a colon.

To execute the input in multi-line mode, you can either press Alt+Enter, or Esc followed by Enter. (If you want the first to work in the OS X terminal, you have to check the "Use option as meta key" checkbox in your terminal settings. For iTerm2, you have to check "Left option acts as +Esc" in the options.)

Syntax validation

Before execution, ptpython will see whether the input is syntactically correct Python code. If not, it will show a warning, and move the cursor to the error.

Other features

Running system commands: Press Meta-! in Emacs mode or just ! in Vi navigation mode to see the "Shell command" prompt. There you can enter system commands without leaving the REPL.

Selecting text: Press Control+Space in Emacs mode on V (major V) in Vi navigation mode.

Configurating

It is possible to create a ~/.ptpython/config.py file to customize the configuration.

Have a look at this example to see what is possible: config.py

You love IPython?

Run ptipython (prompt_toolkit - IPython), to get a nice interactive shell with all the power that IPython has to offer, like magic functions and shell integration. Make sure that IPython has been installed. (pip install ipython)

You are using Django?

django-extensions has a shell_plus management command. When ptpython has been installed, it will by default use ptpython or ptipython.

PDB

There is an experimental PDB replacement: ptpdb.

About Windows support

prompt_toolkit and ptpython are better tested on Linux and OS X than on Windows, but it should be usable:

FAQ

Q

The Ctrl-S forward search doesn't work and freezes my terminal.

A

Try to run stty -ixon in your terminal to disable flow control.

Q

The Meta-key doesn't work.

A

For some terminals you have to enable the Alt-key to act as meta key, but you can also type Escape before any key instead.

Alternatives

Have a look at the alternatives.

• BPython

If you find another alternative, you can create an issue and we'll list it here. If you find a nice feature somewhere that is missing in ptpython, also create a GitHub issue and mabye we'll implement it.

Special thanks to

• Pygments: Syntax highlighter.
• Jedi: Autocompletion library.
• Docopt: Command-line interface description language.
• wcwidth: Determine columns needed for a wide characters.
• prompt_toolkit for the interface.