ipython_qtconsole_config.py

# Configuration file for ipython-qtconsole.
# example ipython_qtconsole_config.py for preserving kernel cwd across restarts
# Author: Min RK
# License: Public Domain

from IPython.utils.process import getoutput

from IPython.qt.console.qtconsoleapp import IPythonQtConsoleApp
from IPython.qt.manager import QtKernelManager

class MyQtKernelManager(QtKernelManager):
    """Subclass of QtKernelManager that remembers the cwd across restarts"""
    def restart_kernel(self, now=False):
        # use lsof to get the cwd of our kernel
        lsof = getoutput(["lsof", "-p", "%i" % self.kernel.pid])
        
        for line in lsof.decode('utf8').splitlines():
            cmd, pid, user, rest = line.split(None, 3)
            # the fifth column (FD) will be 'cwd'
            if rest.startswith('cwd'):
                # the last column (NAME) is the actual cwd value
                cwd = rest.split(None, 5)[-1]
                # set the cwd for the next kernel start:
                self._launch_args['cwd'] = cwd
        
        super(MyQtKernelManager, self).restart_kernel(now=now)

# tell QtConsoleApp to use our KM class instead of the default
IPythonQtConsoleApp.kernel_manager_class = MyQtKernelManager