IPython/config/profile/pysh/ipython_config.py

c = get_config()
app = c.InteractiveShellApp

# This can be used at any point in a config file to load a sub config
# and merge it into the current one.
load_subconfig('ipython_config.py', profile='default')

c.PromptManager.in_template = r'{color.LightGreen}\u@\h{color.LightBlue}[{color.LightCyan}\Y1{color.LightBlue}]{color.Green}|\#> '
c.PromptManager.in2_template = r'{color.Green}|{color.LightGreen}\D{color.Green}> '
c.PromptManager.out_template = r'<\#> '

c.PromptManager.justify = True

c.InteractiveShell.separate_in = ''
c.InteractiveShell.separate_out = ''
c.InteractiveShell.separate_out2 = ''

c.PrefilterManager.multi_line_specials = True

lines = """
%rehashx
"""

# You have to make sure that attributes that are containers already
# exist before using them.  Simple assigning a new list will override
# all previous values.
if hasattr(app, 'exec_lines'):
    app.exec_lines.append(lines)
else:
    app.exec_lines = [lines]