Numpy 用IPython进行调试

import numpy

a = numpy.arange(7)
print a[8]

In [1]: %run buggy.py

------------------------------------------------------------------
IndexError                                                        Traceback (most recent call last)
.../site-packages/IPython/utils/py3compat.pyc in execfile(fname,*where)
    173         else:
    174             filename = fname
--> 175         __builtin__.execfile(filename, *where)

.../buggy.py in ()
    2
    3 a = numpy.arange(7)
----> 4 print a[8]

IndexError: index out of bounds

In [2]: %debug
> .../buggy.py(4)()
      2
      3 a = numpy.arange(7)
----> 4 print a[8]

ipdb> list
      1 import numpy
      2
      3 a = numpy.arange(7)
----> 4 print a[8]

ipdb> len(a)
7

ipdb> print a
[0 1 2 3 4 5 6]

ipdb> bt
.../py3compat.py(175)execfile()
    171        if isinstance(fname, unicode):
    172         filename = fname.encode(sys.getfilesystemencoding())
    173     else:
    174         filename = fname
--> 175     __builtin__.execfile(filename, *where)
> .../buggy.py(4)()
0 print a[8]

ipdb> u
> .../site-packages/IPython/utils/py3compat.py(175)execfile()
      173             else:
      174                 filename = fname
  --> 175             __builtin__.execfile(filename, *where)

ipdb> d
> .../buggy.py(4)()
      2
      3 a = numpy.arange(7)
----> 4 print a[8]