def debugger(self):
"""Call up the pdb debugger if desired, always clean up the tb reference.
If the call_pdb flag is set, the pdb interactive debugger is
invoked. In all cases, the self.tb reference to the current traceback
is deleted to prevent lingering references which hamper memory
management.
Note that each call to pdb() does an 'import readline', so if your app
requires a special setup for the readline completers, you'll have to
fix that by hand after invoking the exception handler."""
if self.call_pdb:
if self.pdb is None:
self.pdb = Debugger.Pdb()
# the system displayhook may have changed, restore the original for pdb
dhook = sys.displayhook
sys.displayhook = sys.__displayhook__
self.pdb.reset()
while self.tb.tb_next is not None:
self.tb = self.tb.tb_next
try:
self.pdb.interaction(self.tb.tb_frame, self.tb)
except IndexError:
print '*** ERROR ***'
print 'This version of pdb has a known bug and crashed.'
print 'Returning to IPython...'
sys.displayhook = dhook
del self.tb
def __init__(self, color_scheme='NoColor', call_pdb=0):
# Whether to call the interactive pdb debugger after printing
# tracebacks or not
self.call_pdb = call_pdb
if call_pdb:
self.pdb = Debugger.Pdb()
else:
self.pdb = None
# Create color table
self.ColorSchemeTable = ColorSchemeTable()
# Populate it with color schemes
C = TermColors # shorthand and local lookup
self.ColorSchemeTable.add_scheme(
ColorScheme(
'NoColor',
# The color to be used for the top line
topline=C.NoColor,
# The colors to be used in the traceback
filename=C.NoColor,
lineno=C.NoColor,
name=C.NoColor,
vName=C.NoColor,
val=C.NoColor,
em=C.NoColor,
# Emphasized colors for the last frame of the traceback
normalEm=C.NoColor,
filenameEm=C.NoColor,
linenoEm=C.NoColor,
nameEm=C.NoColor,
valEm=C.NoColor,
# Colors for printing the exception
excName=C.NoColor,
line=C.NoColor,
caret=C.NoColor,
Normal=C.NoColor))
# make some schemes as instances so we can copy them for modification easily:
self.ColorSchemeTable.add_scheme(
ColorScheme(
'Linux',
# The color to be used for the top line
topline=C.LightRed,
# The colors to be used in the traceback
filename=C.Green,
lineno=C.Green,
name=C.Purple,
vName=C.Cyan,
val=C.Green,
em=C.LightCyan,
# Emphasized colors for the last frame of the traceback
normalEm=C.LightCyan,
filenameEm=C.LightGreen,
linenoEm=C.LightGreen,
nameEm=C.LightPurple,
valEm=C.LightBlue,
# Colors for printing the exception
excName=C.LightRed,
line=C.Yellow,
caret=C.White,
Normal=C.Normal))
# For light backgrounds, swap dark/light colors
self.ColorSchemeTable.add_scheme(
ColorScheme(
'LightBG',
# The color to be used for the top line
topline=C.Red,
# The colors to be used in the traceback
filename=C.LightGreen,
lineno=C.LightGreen,
name=C.LightPurple,
vName=C.Cyan,
val=C.LightGreen,
em=C.Cyan,
# Emphasized colors for the last frame of the traceback
normalEm=C.Cyan,
filenameEm=C.Green,
linenoEm=C.Green,
nameEm=C.Purple,
valEm=C.Blue,
# Colors for printing the exception
excName=C.Red,
#line = C.Brown, # brown often is displayed as yellow
line=C.Red,
caret=C.Normal,
Normal=C.Normal))
self.set_colors(color_scheme)
self.old_scheme = color_scheme # save initial value for toggles
