---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-4-6d5dc00d7528> in <module>()
----> 1 get_ipython().run_cell_magic('heat', '', 'print(a)')

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/IPython/core/interactiveshell.py in run_cell_magic(self, magic_name, line, cell)
   2085             magic_arg_s = self.var_expand(line, stack_depth)
   2086             with self.builtin_trap:
-> 2087                 result = fn(magic_arg_s, cell)
   2088             return result
   2089 

<decorator-gen-124> in heat(self, line, cell)

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/IPython/core/magic.py in <lambda>(f, *a, **k)
    186     # but it's overkill for just that one bit of state.
    187     def magic_deco(arg):
--> 188         call = lambda f, *a, **k: f(*a, **k)
    189 
    190         if callable(arg):

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/heat.py in heat(self, line, cell)
     61 
     62         pyheat = PyHeat(tmp_file)
---> 63         pyheat.create_heatmap()
     64         pyheat.show_heatmap(output_file=filename)
     65         pyheat.close_heatmap()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pyheat/pyheat.py in create_heatmap(self)
     44         """Method to define the heatmap using profile data."""
     45         # Profile the file.
---> 46         self.__profile_file()
     47         # Map profile stats to heatmap data.
     48         self.__fetch_heatmap_data_from_profile()

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pyheat/pyheat.py in __profile_file(self)
     71         self.line_profiler = pprofile.Profile()
     72         self.line_profiler.runfile(
---> 73             open(self.pyfile.path, 'r'), {}, self.pyfile.path)
     74 
     75     def __get_line_profile_data(self):

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pprofile.py in runfile(self, fd, argv, fd_name, compile_flags, dont_inherit, globals)
    606         try:
    607             sys.argv[:] = argv
--> 608             return self.runctx(code, ctx_globals, None)
    609         finally:
    610             sys.argv[:] = original_sys_argv

/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pprofile.py in runctx(self, cmd, globals, locals)
    586         """Similar to profile.Profile.runctx ."""
    587         with self():
--> 588             exec(cmd, globals, locals)
    589         return self
    590 

/Users/Jean/Desktop/ipython_cell_input.py in <module>()
----> 1 print(a)

NameError: name 'a' is not defined