def hijack_wx():
"""Modifies wxPython's MainLoop with a dummy so user code does not
block IPython. The hijacked mainloop function is returned.
"""
def dummy_mainloop(*args, **kw):
pass
try:
import wx
except ImportError:
# For very old versions of WX
import wxPython as wx
ver = wx.__version__
orig_mainloop = None
if ver[:3] >= '2.5':
import wx
if hasattr(wx, '_core_'): core = getattr(wx, '_core_')
elif hasattr(wx, '_core'): core = getattr(wx, '_core')
else: raise AttributeError('Could not find wx core module')
orig_mainloop = core.PyApp_MainLoop
core.PyApp_MainLoop = dummy_mainloop
elif ver[:3] == '2.4':
orig_mainloop = wx.wxc.wxPyApp_MainLoop
wx.wxc.wxPyApp_MainLoop = dummy_mainloop
else:
warn("Unable to find either wxPython version 2.4 or >= 2.5.")
return orig_mainloop
def __init__(self, argv=None, user_ns=None, user_global_ns=None,
debug=0, shell_class=MTInteractiveShell):
from PyQt4 import QtCore, QtGui
try:
# present in PyQt4-4.2.1 or later
QtCore.pyqtRemoveInputHook()
except AttributeError:
pass
if QtCore.PYQT_VERSION_STR == '4.3':
warn('''PyQt4 version 4.3 detected.
If you experience repeated threading warnings, please update PyQt4.
''')
self.exec_ = hijack_qt4()
# Allows us to use both Tk and QT.
self.tk = get_tk()
self.IP = make_IPython(argv,
user_ns=user_ns,
user_global_ns=user_global_ns,
debug=debug,
shell_class=shell_class,
on_kill=[QtGui.qApp.exit])
# HACK: slot for banner in self; it will be passed to the mainloop
# method only and .run() needs it. The actual value will be set by
# .mainloop().
self._banner = None
threading.Thread.__init__(self)
def _dummy_warn(self, *args, **kw):
"""Dummy function, which doesn't do anything but warn."""
warn("IPython is not running, this is a dummy no-op function")
def magic_history(self, parameter_s=''):
"""Print input history (_i<n> variables), with most recent last.
%history -> print at most 40 inputs (some may be multi-line)\\
%history n -> print at most n inputs\\
%history n1 n2 -> print inputs between n1 and n2 (n2 not included)\\
Each input's number <n> is shown, and is accessible as the
automatically generated variable _i<n>. Multi-line statements are
printed starting at a new line for easy copy/paste.
Options:
-n: do NOT print line numbers. This is useful if you want to get a
printout of many lines which can be directly pasted into a text
editor.
This feature is only available if numbered prompts are in use.
-t: (default) print the 'translated' history, as IPython understands it.
IPython filters your input and converts it all into valid Python source
before executing it (things like magics or aliases are turned into
function calls, for example). With this option, you'll see the native
history instead of the user-entered version: '%cd /' will be seen as
'_ip.magic("%cd /")' instead of '%cd /'.
-r: print the 'raw' history, i.e. the actual commands you typed.
-g: treat the arg as a pattern to grep for in (full) history.
This includes the "shadow history" (almost all commands ever written).
Use '%hist -g' to show full shadow history (may be very long).
In shadow history, every index nuwber starts with 0.
-f FILENAME: instead of printing the output to the screen, redirect it to
the given file. The file is always overwritten, though IPython asks for
confirmation first if it already exists.
"""
ip = self.api
shell = self.shell
if not shell.outputcache.do_full_cache:
print 'This feature is only available if numbered prompts are in use.'
return
opts, args = self.parse_options(parameter_s, 'gntsrf:', mode='list')
# Check if output to specific file was requested.
try:
outfname = opts['f']
except KeyError:
outfile = Term.cout # default
# We don't want to close stdout at the end!
close_at_end = False
else:
if os.path.exists(outfname):
if not ask_yes_no("File %r exists. Overwrite?" % outfname):
print 'Aborting.'
return
outfile = open(outfname, 'w')
close_at_end = True
if 't' in opts:
input_hist = shell.input_hist
elif 'r' in opts:
input_hist = shell.input_hist_raw
else:
input_hist = shell.input_hist
default_length = 40
pattern = None
if 'g' in opts:
init = 1
final = len(input_hist)
parts = parameter_s.split(None, 1)
if len(parts) == 1:
parts += '*'
head, pattern = parts
pattern = "*" + pattern + "*"
elif len(args) == 0:
final = len(input_hist)
init = max(1, final - default_length)
elif len(args) == 1:
final = len(input_hist)
init = max(1, final - int(args[0]))
elif len(args) == 2:
init, final = map(int, args)
else:
warn('%hist takes 0, 1 or 2 arguments separated by spaces.')
print self.magic_hist.__doc__
return
width = len(str(final))
line_sep = ['', '\n']
print_nums = not opts.has_key('n')
found = False
if pattern is not None:
sh = ip.IP.shadowhist.all()
for idx, s in sh:
if fnmatch.fnmatch(s, pattern):
print "0%d: %s" % (idx, s)
found = True
if found:
print "==="
print "shadow history ends, fetch by %rep <number> (must start with 0)"
print "=== start of normal history ==="
for in_num in range(init, final):
inline = input_hist[in_num]
if pattern is not None and not fnmatch.fnmatch(inline, pattern):
continue
multiline = int(inline.count('\n') > 1)
if print_nums:
print >> outfile, \
'%s:%s' % (str(in_num).ljust(width),line_sep[multiline]),
print >> outfile, inline,
if close_at_end:
outfile.close()
def magic_history(self, parameter_s = ''):
"""Print input history (_i<n> variables), with most recent last.
%history -> print at most 40 inputs (some may be multi-line)\\
%history n -> print at most n inputs\\
%history n1 n2 -> print inputs between n1 and n2 (n2 not included)\\
Each input's number <n> is shown, and is accessible as the
automatically generated variable _i<n>. Multi-line statements are
printed starting at a new line for easy copy/paste.
Options:
-n: do NOT print line numbers. This is useful if you want to get a
printout of many lines which can be directly pasted into a text
editor.
This feature is only available if numbered prompts are in use.
-t: (default) print the 'translated' history, as IPython understands it.
IPython filters your input and converts it all into valid Python source
before executing it (things like magics or aliases are turned into
function calls, for example). With this option, you'll see the native
history instead of the user-entered version: '%cd /' will be seen as
'_ip.magic("%cd /")' instead of '%cd /'.
-r: print the 'raw' history, i.e. the actual commands you typed.
-g: treat the arg as a pattern to grep for in (full) history.
This includes the "shadow history" (almost all commands ever written).
Use '%hist -g' to show full shadow history (may be very long).
In shadow history, every index nuwber starts with 0.
-f FILENAME: instead of printing the output to the screen, redirect it to
the given file. The file is always overwritten, though IPython asks for
confirmation first if it already exists.
"""
ip = self.api
shell = self.shell
if not shell.outputcache.do_full_cache:
print 'This feature is only available if numbered prompts are in use.'
return
opts,args = self.parse_options(parameter_s,'gntsrf:',mode='list')
# Check if output to specific file was requested.
try:
outfname = opts['f']
except KeyError:
outfile = Term.cout # default
# We don't want to close stdout at the end!
close_at_end = False
else:
if os.path.exists(outfname):
if not ask_yes_no("File %r exists. Overwrite?" % outfname):
print 'Aborting.'
return
outfile = open(outfname,'w')
close_at_end = True
if 't' in opts:
input_hist = shell.input_hist
elif 'r' in opts:
input_hist = shell.input_hist_raw
else:
input_hist = shell.input_hist
default_length = 40
pattern = None
if 'g' in opts:
init = 1
final = len(input_hist)
parts = parameter_s.split(None,1)
if len(parts) == 1:
parts += '*'
head, pattern = parts
pattern = "*" + pattern + "*"
elif len(args) == 0:
final = len(input_hist)
init = max(1,final-default_length)
elif len(args) == 1:
final = len(input_hist)
init = max(1,final-int(args[0]))
elif len(args) == 2:
init,final = map(int,args)
else:
warn('%hist takes 0, 1 or 2 arguments separated by spaces.')
print self.magic_hist.__doc__
return
width = len(str(final))
line_sep = ['','\n']
print_nums = not opts.has_key('n')
found = False
if pattern is not None:
sh = ip.IP.shadowhist.all()
for idx, s in sh:
if fnmatch.fnmatch(s, pattern):
print "0%d: %s" %(idx, s)
found = True
if found:
print "==="
print "shadow history ends, fetch by %rep <number> (must start with 0)"
print "=== start of normal history ==="
for in_num in range(init,final):
inline = input_hist[in_num]
if pattern is not None and not fnmatch.fnmatch(inline, pattern):
continue
multiline = int(inline.count('\n') > 1)
if print_nums:
print >> outfile, \
'%s:%s' % (str(in_num).ljust(width),line_sep[multiline]),
print >> outfile, inline,
if close_at_end:
outfile.close()
