fixes #22

Author: jph00

execnb/__init__.py

@@ -1 +1 @@
-__version__ = "0.0.8"
+__version__ = "0.0.9"

execnb/_modidx.py

@@ -27,7 +27,7 @@
                 'title': 'execnb',
                 'tst_flags': 'notest',
                 'user': 'fastai',
-                'version': '0.0.8'},
+                'version': '0.0.9'},
   'syms': { 'execnb.fastshell': { 'execnb.fastshell.FastInteractiveShell': 'https://fastai.github.io/execnb/fastshell#FastInteractiveShell',
                                   'execnb.fastshell.FastInteractiveShell.ask_exit': 'https://fastai.github.io/execnb/fastshell#FastInteractiveShell.ask_exit',
                                   'execnb.fastshell.FastInteractiveShell.data_pub': 'https://fastai.github.io/execnb/fastshell#FastInteractiveShell.data_pub',

execnb/shell.py

@@ -2,10 +2,16 @@
 
 # %% ../nbs/02_shell.ipynb 2
 from __future__ import annotations
+
 from fastcore.basics import *
 from fastcore.imports import *
 from fastcore.script import call_parse
 
+import multiprocessing
+try:
+    if sys.platform == 'darwin': multiprocessing.set_start_method("fork")
+except RuntimeError: pass # if re-running cell
+
 import tokenize
 from IPython.core.interactiveshell import InteractiveShell
 from IPython.core.displayhook import DisplayHook
@@ -186,7 +192,7 @@ def execute(self:CaptureShell,
                  inject_code=inject_code, inject_idx=inject_idx)
     if dest: write_nb(nb, dest)
 
-# %% ../nbs/02_shell.ipynb 44
+# %% ../nbs/02_shell.ipynb 45
 @patch
 def prettytb(self:CaptureShell, 
              fname:str|Path=None): # filename to print alongside the traceback
@@ -198,7 +204,7 @@ def prettytb(self:CaptureShell,
     fname_str = f' in {fname}' if fname else ''
     return f"{type(self.exc[1]).__name__}{fname_str}:\n{_fence}\n{cell_str}\n"
 
-# %% ../nbs/02_shell.ipynb 64
+# %% ../nbs/02_shell.ipynb 65
 @call_parse
 def exec_nb(
     src:str, # Notebook path to read from