相关疑难解决方法(0)

我正在使用firefox的jupyter(或Ipython)笔记本,并希望在单元格中调试一些python代码.我正在使用'import ipdb; ipdb.set_trace()'作为一种断点,例如我的单元格具有以下代码:

a=4
import ipdb; ipdb.set_trace()
b=5
print a
print b

用Shift + Enter执行后给出了这个错误:

--------------------------------------------------------------------------
MultipleInstanceError                     Traceback (most recent call last)
<ipython-input-1-f2b356251c56> in <module>()
      1 a=4
----> 2 import ipdb; ipdb.set_trace()
      3 b=5
      4 print a
      5 print b

/home/nnn/anaconda/lib/python2.7/site-packages/ipdb/__init__.py in <module>()
     14 # You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
     15 
---> 16 from ipdb.__main__ import set_trace, post_mortem, pm, run, runcall, runeval, launch_ipdb_on_exception
     17 
     18 …