In a notebook, when I entered
p = Polyhedron(ieqs=[(0,1,0,0,0,0,0,0,0),(0,0,0,0,0,1,0,0,0),(0,-1,1,0,0,0,0,0,0),(0,0,-1,1,0,0,0,0,0),(0,0,0,-1,1,0,0,0,0),(0,0,0,0,-1,0,0,0,1),(0,0,0,0,0,-1,1,0,0),(0,0,0,0,0,0,-1,1,0),(0,0,0,0,0,0,0,-1,1),(1,-1,-1,-1,-1,-1,-1,-1,-1)])
and
H1 = Polyhedron(eqns=[(0,-1,0,0,0,1,0,0,0)])
q1 = p.intersection(H1)
q1.vertices()
everything was fine, but when I typed in
(1000*q1).integral_points_count()
I got the following message:
--------------------------------------------------------------------------- PackageNotFoundError
Traceback (most recent call last)
<ipython-input-75-395b663ed32e> in
<module>()
----> 1 (Integer(1000)*q1).integral_points_count()
/opt/sagemath-8.1/local/lib/python2.7/site-packages/sage/geometry/polyhedron/base_QQ.py
in integral_points_count(self,
verbose, use_Hrepresentation,
explicit_enumeration_threshold,
preprocess, **kwds)
216 cdd=True,
217 verbose=verbose,
--> 218 **kwds)
/opt/sagemath-8.1/local/lib/python2.7/site-packages/sage/interfaces/latte.py
in count(arg, ehrhart_polynomial,
multivariate_generating_function,
raw_output, verbose, **kwds)
148 except OSError:
149 from sage.misc.package import PackageNotFoundError
--> 150 raise PackageNotFoundError('latte_int')
151
152 ans, err = latte_proc.communicate(arg)
PackageNotFoundError: the package
'latte_int' was not found. You can
install it by running 'sage -i
latte_int' in a shell
However, when I used sage -i latte_int, I got the error message
File "<ipython-input-76-d56a71c64d98>", line 1
sage -i latte_int
^
SyntaxError: invalid syntax
Does anyone know why am I getting these conflicting messages? I tried it both on a VirtualBox and Windows, but they both give the same messages.
EDIT: When I open a shell, there is a message on top saying
Starting subshell with Sage environment variable set. Don't forget to exit when you are done. Beware:
* Do not do anything with other copies of Sage on your system.
Do not use this for installing Sage packages using "sage -i" or for running "make" at Sage's root directory. These should be done outside the Sage shell.
When I enter sage -i latte_int in anyway, I get
make: *** No rule to make target 'all-toolchain'. Stop.
Typing sage -i latte_int in a terminal or console gives the same result.
Entering !sage -i latte_int in a Notebook, I get an OSError
---------------------------------------------------------------------------
OSError Traceback (most recent call last)
<ipython-input-1-f5647ef902a7> in <module>()
----> 1 get_ipython().system(u'sage -i
latte_int') latte_int')
/opt/sagemath-8.1/local/lib/python2.7/site-packages/IPython/core/interactiveshell.py in system_piped(self, cmd)
2207 # a non-None value would trigger
:func:sys.displayhook :func:`sys.displayhook` calls.
2208 # Instead, we store the exit_code in user_ns.
-> 2209 self.user_ns['_exit_code'] = system(self.var_expand(cmd, depth=1))
2210
2211 def system_raw(self,
cmd): cmd):
/opt/sagemath-8.1/local/lib/python2.7/site-packages/IPython/utils/_process_posix.py in system(self, cmd)
155 child = pexpect.spawnb(self.sh, args=['-c', cmd]) # Pexpect-U
156 else:
--> 157 child = pexpect.spawn(self.sh, args=['-c', cmd]) # Vanilla Pexpect
158 flush = sys.stdout.flush
159 while
True: True:
/opt/sagemath-8.1/local/lib/python2.7/site-packages/pexpect/pty_spawn.py in __init__(self, command, args, timeout, maxread, searchwindowsize, logfile, cwd, env, ignore_sighup, echo, preexec_fn, encoding, codec_errors, dimensions)
196 self.name = '<pexpect
factory="" incomplete="">'
factory incomplete>'
197 else:
--> 198 self._spawn(command, args, preexec_fn, dimensions)
199
200 def
__str__(self): __str__(self):
/opt/sagemath-8.1/local/lib/python2.7/site-packages/pexpect/pty_spawn.py in _spawn(self, command, args, preexec_fn, dimensions)
296
297 self.ptyproc = self._spawnpty(self.args, env=self.env,
--> 298 cwd=self.cwd, **kwargs)
299
300 self.pid =
self.ptyproc.pid self.ptyproc.pid
/opt/sagemath-8.1/local/lib/python2.7/site-packages/pexpect/pty_spawn.py in _spawnpty(self, args,
*kwargs)
**kwargs)
307 def _spawnpty(self, args,
*kwargs):
**kwargs):
308 '''Spawn a pty and return an instance of PtyProcess.'''
--> 309 return ptyprocess.PtyProcess.spawn(args, **kwargs)
310
311 def close(self,
force=True): force=True):
/opt/sagemath-8.1/local/lib/python2.7/site-packages/ptyprocess/ptyprocess.py in spawn(cls, argv, cwd, env, echo, preexec_fn, dimensions)
218
219 if use_native_pty_fork:
--> 220 pid, fd = pty.fork()
221 else:
222 # Use internal fork_pty, for
Solaris Solaris
/opt/sagemath-8.1/local/lib/python2.7/pty.py in fork()
106
107 master_fd, slave_fd = openpty()
--> 108 pid = os.fork()
109 if pid == CHILD:
110 # Establish a new
session. session.
OSError: [Errno 11] Resource temporarily
unavailableunavailable
