use KernelManager for starting a new kernel

Author: ivanov

ftplugin/python/ipy.vim

@@ -147,7 +147,7 @@ endif
 command! -nargs=* IPython :py km_from_string("<args>")
 command! -nargs=0 IPythonClipboard :py km_from_string(vim.eval('@+'))
 command! -nargs=0 IPythonXSelection :py km_from_string(vim.eval('@*'))
-command! -nargs=0 IPythonNew :py new_ipy()
+command! -nargs=* IPythonNew :py new_ipy("<args>")
 command! -nargs=* IPythonInterrupt :py interrupt_kernel_hack("<args>")
 command! -nargs=0 IPythonTerminate :py terminate_kernel_hack()
 

ftplugin/python/vim_ipython.py

@@ -82,16 +82,21 @@ def vim_regex_escape(x):
 same version of Python.
 """
 
-def new_ipy():
-    from random import random
-    from subprocess import Popen, PIPE
-    from time import sleep
-    import atexit
-    fname = "vim.ipython.%s.json" % (int(random()*100000))
-    p = Popen(["ipython", "kernel", "-f", fname], shell=False, stdout=PIPE, stdin=PIPE, stderr=PIPE)
-    atexit.register(p.kill)
-    sleep(3)
-    return km_from_string(fname)
+def new_ipy(s=''):
+    """Create a new IPython kernel (optionally with extra arguments)
+
+    XXX: Allow passing of profile information here
+
+    Examples
+    --------
+
+        new_ipy()
+
+    """
+    from IPython.kernel import KernelManager
+    km = KernelManager()
+    km.start_kernel()
+    return km_from_string(km.connection_file)
 
 def km_from_string(s=''):
     """create kernel manager from IPKernelApp string