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""" Debug a script (like %run -d) in IPython process, Using WinPdb
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Usage:
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%wdb test.py
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run test.py, with a winpdb breakpoint at start of the file
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%wdb pass
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Change the password (e.g. if you have forgotten the old one)
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Notes
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-----
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**WARNING**: As of March 2009 (IPython 0.10), WinPdb has a known bug, which
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causes PyTables to become impossible to import if winpdb is loaded. Therefore,
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if you need PyTables, do *not* use this extension.
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For more details: https://bugs.launchpad.net/ipython/+bug/249036
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"""
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import os
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from IPython.core import ipapi
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import rpdb2
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ip = ipapi.get()
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rpdb_started = False
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def wdb_f(self, arg):
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""" Debug a script (like %run -d) in IPython process, Using WinPdb
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Usage:
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%wdb test.py
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run test.py, with a winpdb breakpoint at start of the file
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%wdb pass
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Change the password (e.g. if you have forgotten the old one)
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Note that after the script has been run, you need to do "Go" (f5)
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in WinPdb to resume normal IPython operation.
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"""
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global rpdb_started
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if not arg.strip():
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print __doc__
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return
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if arg.strip() == 'pass':
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passwd = raw_input('Enter new winpdb session password: ')
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ip.db['winpdb_pass'] = passwd
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print "Winpdb password changed"
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if rpdb_started:
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print "You need to restart IPython to use the new password"
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return
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path = os.path.abspath(arg)
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if not os.path.isfile(path):
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raise ipapi.UsageError("%%wdb: file %s does not exist" % path)
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if not rpdb_started:
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passwd = ip.db.get('winpdb_pass', None)
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if passwd is None:
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import textwrap
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print textwrap.dedent("""\
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Winpdb sessions need a password that you use for attaching the external
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winpdb session. IPython will remember this. You can change the password later
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by '%wpdb pass'
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""")
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passwd = raw_input('Enter new winpdb session password: ')
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ip.db['winpdb_pass'] = passwd
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print "Starting rpdb2 in IPython process"
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rpdb2.start_embedded_debugger(passwd, timeout = 0)
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rpdb_started = True
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rpdb2.set_temp_breakpoint(path)
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print 'It is time to attach with WinPdb (launch WinPdb if needed, File -> Attach)'
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ip.magic('%run ' + arg)
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ip.expose_magic('wdb', wdb_f)
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