=== Configure ipython terminal prompts ===

==== Task ====
The idea here is to change the default ipython terminal prompts such that a typical session looks like
<code>
In [1]:
a='foo'
a
Out[1]:
'foo'
</code>

instead of
<code>
In [1]: a='foo'
   ...: a
Out[1]: 'foo'
</code>
which is the default. The new version makes it easy to copy paste stuff across sessions.

==== Steps ====
Create a profile (~/.ipython/profile_default/ipython_config.py) if it is not already created by running
<code>
ipython profile create
</code>
Add the following to ~/.ipython/profile_default/ipython_config.py
<code>
#------------------------------------------------------------------------------
# Customize terminal prompts.
# The goal here is to make it easy to copy paste stuff from/to ipython
# sessions. This is achieved by
# * adding an extra line to the input and output prompts
# * removing the continuation prompt
# To build the original prompt, I am using
# https://github.com/ipython/ipython/blob/master/IPython/terminal/prompts.py
from IPython.terminal.prompts import Prompts
from pygments.token import Token

class MyPrompt(Prompts):

    # keep the original input prompt but add an extra line
    def in_prompt_tokens(self):
        return [
            (Token.Prompt, self.vi_mode() ),
            (Token.Prompt, 'In ['),
            (Token.PromptNum, str(self.shell.execution_count)),
            (Token.Prompt, ']: '),
            (Token.Prompt, '\n'),
        ]

    # remove the continuation prompt.
    def continuation_prompt_tokens(self, width=None):
        return [
            (Token.Prompt, ''),
        ]

    # keep the original output prompt but add an extra line
    def out_prompt_tokens(self):
        return [
            (Token.OutPrompt, 'Out['),
            (Token.OutPromptNum, str(self.shell.execution_count)),
            (Token.OutPrompt, ']: '),
            (Token.OutPrompt, '\n'),
        ]

c.TerminalInteractiveShell.prompts_class = MyPrompt
#------------------------------------------------------------------------------
</code>

tags | add a newline to ipython input prompt, change ipython terminal prompts, ipython paste without the dots