Having trouble to run examples

[ggttkl]

I followed instructions to run double_pendulum_simulator.py
Here are my results
Traceback (most recent call last):
File "double_pendulum_simulator.py", line 1, in
from pydrake.all import ( BasicVector, DiagramBuilder, FloatingBaseType,
File "/drake/lib/python2.7/site-packages/pydrake/all.py", line 34, in
from .systems.all import *
File "/drake/lib/python2.7/site-packages/pydrake/systems/all.py", line 7, in
from .drawing import *
File "/drake/lib/python2.7/site-packages/pydrake/systems/drawing.py", line 9, in
import matplotlib.image as mpimg
File "/usr/lib/python2.7/dist-packages/matplotlib/init.py", line 1133, in
rcParams = rc_params()
File "/usr/lib/python2.7/dist-packages/matplotlib/init.py", line 967, in rc_params
fname = matplotlib_fname()
File "/usr/lib/python2.7/dist-packages/matplotlib/init.py", line 796, in matplotlib_fname
configdir = _get_configdir()
File "/usr/lib/python2.7/dist-packages/matplotlib/init.py", line 649, in _get_configdir
return _get_config_or_cache_dir(_get_xdg_config_dir())
File "/usr/lib/python2.7/dist-packages/matplotlib/init.py", line 626, in _get_config_or_cache_dir
return _create_tmp_config_dir()
File "/usr/lib/python2.7/dist-packages/matplotlib/init.py", line 555, in _create_tmp_config_dir
tempdir = os.path.join(tempdir, 'matplotlib-%s' % getpass.getuser())
File "/usr/lib/python2.7/getpass.py", line 158, in getuser
return pwd.getpwuid(os.getuid())[0]
KeyError: 'getpwuid(): uid not found: 197609'
All the python files came across the same situation and I cannot run jupyter scripts as long as I import underactuated packages.
Could anyone share some suggestions for this issue. Thanks in advance!