def kill_embedded(self,parameter_s=''):
"""%kill_embedded : deactivate for good the current embedded IPython.
This function (after asking for confirmation) sets an internal flag so that
an embedded IPython will never activate again. This is useful to
permanently disable a shell that is being called inside a loop: once you've
figured out what you needed from it, you may then kill it and the program
will then continue to run without the interactive shell interfering again.
"""
kill = ask_yes_no("Are you sure you want to kill this embedded instance "
"(y/n)? [y/N] ",'n')
if kill:
self.shell.embedded_active = False
print "This embedded IPython will not reactivate anymore once you exit."
def _quit_sage_(self):
import sage.misc.preparser_ipython
if sage.misc.preparser_ipython.interface != None:
sage.misc.preparser_ipython.switch_interface('sage')
self.exit_now = False
return
from IPython.genutils import ask_yes_no
if self.rc.confirm_exit:
if ask_yes_no('Do you really want to exit ([y]/n)?', 'y'):
self.exit_now = True
else:
self.exit_now = True
if self.exit_now:
quit_sage()
self.exit_now = True
return self.exit_now
def _quit_sage_(self):
import sage.misc.preparser_ipython
if sage.misc.preparser_ipython.interface != None:
sage.misc.preparser_ipython.switch_interface('sage')
self.exit_now = False
return
from IPython.genutils import ask_yes_no
if self.rc.confirm_exit:
if ask_yes_no('Do you really want to exit ([y]/n)?','y'):
self.exit_now = True
else:
self.exit_now = True
if self.exit_now:
quit_sage()
self.exit_now = True
return self.exit_now
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
# We don't want to close stdout at the end!
close_at_end = False
else:
if os.path.exists(outfname):
ans = ask_yes_no("File %r exists. Overwrite?" % outfname)
if not ans:
print 'Aborting.'
return
else:
outfile = open(outfname,'w')
close_at_end = True
if opts.has_key('t'):
input_hist = shell.input_hist
elif opts.has_key('r'):
input_hist = shell.input_hist_raw
else:
input_hist = shell.input_hist
default_length = 40
pattern = None
if opts.has_key('g'):
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()
