Show current working directory in prompt

README.rst

Show current working directory in prompt

1. Save the above snippet in a file (for example show_cwd_in_prompt.py)
2. Set the environment variable PYTHONSTARTUP to the path of the file
3. Enjoy bpython

Example session.txt

bpython version 0.16.dev52 on top of Python 3.5.2+ /tmp/_env/bin/python
/tmp/bpython> import os
/tmp/bpython> os.chdir("/home/andy")
~> os.chdir("/home/andy/")
~> os.chdir("/home/andy/src")
~/src> 

show_cwd_in_prompt.py

import os
import sys

original_hook = sys.displayhook
_home = os.path.expanduser("~")

def set_ps1_to_cwd():
    cwd = os.getcwd()
    home_prefix = os.path.commonpath([_home, cwd])
    if home_prefix == _home:
        cwd = "~" + cwd[len(home_prefix):]
    sys.ps1 = cwd + "> "

def cwd_displayhook(x):
    original_hook(x)
    set_ps1_to_cwd()

sys.displayhook = cwd_displayhook
set_ps1_to_cwd()