C:\Users\carme>conda list
# packages in environment at C:\Users\carme\Anaconda2:
#
_license          1.1            py27_1
alabaster         0.7.10          py27_0
anaconda          4.4.0        np112py27_0
anaconda-client      1.6.3           py27_0
anaconda-navigator     1.6.2           py27_0
anaconda-project      0.6.0           py27_0
asn1crypto         0.22.0          py27_0
astroid          1.4.9           py27_0
astropy          1.3.2        np112py27_0
babel           2.4.0           py27_0
backports         1.0            py27_0
backports_abc       0.5            py27_0
beautifulsoup4 Â Â Â Â Â Â 4.6.0 Â Â Â Â Â Â Â Â Â Â py27_0
bitarray          0.8.1           py27_1
blaze           0.10.1          py27_0
bleach           1.5.0           py27_0
bokeh           0.12.5          py27_1
boto            2.46.1          py27_0
bottleneck         1.2.1        np112py27_0
bzip2 Â Â Â Â Â Â Â Â Â Â 1.0.6 Â Â Â Â Â Â Â Â Â Â vc9_3 Â [vc9]
cdecimal          2.3            py27_2
cffi            1.10.0          py27_0
chardet          3.0.3           py27_0
click           6.7            py27_0
cloudpickle        0.2.2           py27_0
clyent           1.2.2           py27_0
colorama          0.3.9           py27_0
comtypes          1.1.2           py27_0
conda           4.3.21          py27_0
conda-env         2.6.0             0
configparser        3.5.0           py27_0
console_shortcut      0.1.1           py27_1
contextlib2 Â Â Â Â Â Â Â 0.5.5 Â Â Â Â Â Â Â Â Â Â py27_0
cryptography        1.8.1           py27_0
curl            7.52.1           vc9_0  [vc9]
cycler           0.10.0          py27_0
cython           0.25.2          py27_0
cytoolz          0.8.2           py27_0
dask            0.14.3          py27_1
datashape         0.5.4           py27_0
decorator         4.0.11          py27_0
distributed        1.16.3          py27_0
docutils          0.13.1          py27_0
entrypoints        0.2.2           py27_1
enum34 Â Â Â Â Â Â Â Â Â Â 1.1.6 Â Â Â Â Â Â Â Â Â Â py27_0
et_xmlfile         1.0.1           py27_0
fastcache         1.0.2           py27_1
flask           0.12.2          py27_0
flask-cors         3.0.2           py27_0
freetype          2.5.5           vc9_2  [vc9]
funcsigs          1.0.2           py27_0
functools32 Â Â Â Â Â Â Â 3.2.3.2 Â Â Â Â Â Â Â Â Â py27_0
futures          3.1.1           py27_0
get_terminal_size     1.0.0           py27_0
gevent           1.2.1           py27_0
greenlet          0.4.12          py27_0
grin            1.2.1           py27_3
h5py            2.7.0        np112py27_0
hdf5 Â Â Â Â Â Â Â Â Â Â Â 1.8.15.1 Â Â Â Â Â Â Â Â Â vc9_4 Â [vc9]
heapdict          1.0.0           py27_1
html5lib          0.999           py27_0
icu            57.1            vc9_0  [vc9]
idna            2.5            py27_0
imagesize         0.7.1           py27_0
ipaddress         1.0.18          py27_0
ipykernel         4.6.1           py27_0
ipython          5.3.0           py27_0
ipython_genutils      0.2.0           py27_0
ipywidgets         6.0.0           py27_0
isort           4.2.5           py27_0
itsdangerous        0.24           py27_0
jdcal           1.3            py27_0
jedi            0.10.2          py27_2
jinja2 Â Â Â Â Â Â Â Â Â Â 2.9.6 Â Â Â Â Â Â Â Â Â Â py27_0
jpeg            9b             vc9_0  [vc9]
jsonschema         2.6.0           py27_0
jupyter          1.0.0           py27_3
jupyter_client       5.0.1           py27_0
jupyter_console      5.1.0           py27_0
jupyter_core        4.3.0           py27_0
lazy-object-proxy     1.2.2           py27_0
libpng           1.6.27           vc9_0  [vc9]
libtiff          4.0.6           vc9_3  [vc9]
llvmlite          0.18.0          py27_0
locket           0.2.0           py27_1
lxml            3.7.3           py27_0
markupsafe         0.23           py27_2
matplotlib         2.0.2        np112py27_0
menuinst          1.4.7           py27_0
mistune          0.7.4           py27_0
mkl            2017.0.1            0
mkl-service        1.1.2           py27_3
mpmath           0.19           py27_1
msgpack-python       0.4.8           py27_0
multipledispatch      0.4.9           py27_0
navigator-updater     0.1.0           py27_0
nbconvert         5.1.1           py27_0
nbformat          4.3.0           py27_0
networkx          1.11           py27_0
nltk            3.2.3           py27_0
nose            1.3.7           py27_1
notebook          5.0.0           py27_0
numba           0.33.0        np112py27_0
numexpr          2.6.2        np112py27_0
numpy           1.12.1          py27_0
numpydoc          0.6.0           py27_0
odo            0.5.0           py27_1
olefile          0.44           py27_0
openpyxl          2.4.7           py27_0
openssl          1.0.2l           vc9_0  [vc9]
packaging         16.8           py27_0
pandas           0.20.1        np112py27_0
pandocfilters       1.4.1           py27_0
partd           0.3.8           py27_0
path.py          10.3.1          py27_0
pathlib2 Â Â Â Â Â Â Â Â Â 2.2.1 Â Â Â Â Â Â Â Â Â Â py27_0
patsy           0.4.1           py27_0
pep8 Â Â Â Â Â Â Â Â Â Â Â 1.7.0 Â Â Â Â Â Â Â Â Â Â py27_0
pickleshare        0.7.4           py27_0
pillow           4.1.1           py27_0
pip            9.0.1           py27_1
ply            3.10           py27_0
prompt_toolkit       1.0.14          py27_0
psutil           5.2.2           py27_0
py             1.4.33          py27_0
pycosat          0.6.2           py27_0
pycparser         2.17           py27_0
pycrypto          2.6.1           py27_6
pycurl           7.43.0          py27_2
pyflakes          1.5.0           py27_0
pygments          2.2.0           py27_0
pylint           1.6.4           py27_1
pyodbc           4.0.16          py27_0
pyopenssl         17.0.0          py27_0
pyparsing         2.1.4           py27_0
pyqt            5.6.0           py27_2
pytables          3.2.2        np112py27_4
pytest           3.0.7           py27_0
python           2.7.13             1
python-dateutil      2.6.0           py27_0
pytz            2017.2          py27_0
pywavelets         0.5.2        np112py27_0
pywin32 Â Â Â Â Â Â Â Â Â 220 Â Â Â Â Â Â Â Â Â Â Â py27_2
pyyaml           3.12           py27_0
pyzmq           16.0.2          py27_0
qt             5.6.2           vc9_4  [vc9]
qtawesome         0.4.4           py27_0
qtconsole         4.3.0           py27_0
qtpy            1.2.1           py27_0
requests          2.14.2          py27_0
rope            0.9.4           py27_1
ruamel_yaml        0.11.14          py27_1
scandir          1.5            py27_0
scikit-image        0.13.0        np112py27_0
scikit-learn        0.18.1        np112py27_1
scipy           0.19.0        np112py27_0
seaborn          0.7.1           py27_0
setuptools         27.2.0          py27_1
simplegeneric       0.8.1           py27_1
singledispatch       3.4.0.3          py27_0
sip            4.18           py27_0
six            1.10.0          py27_0
snowballstemmer      1.2.1           py27_0
sortedcollections     0.5.3           py27_0
sortedcontainers      1.5.7           py27_0
sphinx           1.5.6           py27_0
spyder           3.1.4           py27_0
sqlalchemy         1.1.9           py27_0
ssl_match_hostname     3.4.0.2          py27_1
statsmodels        0.8.0        np112py27_0
subprocess32 Â Â Â Â Â Â Â 3.2.7 Â Â Â Â Â Â Â Â Â Â py27_0
sympy           1.0            py27_0
tblib           1.3.2           py27_0
testpath          0.3            py27_0
tk             8.5.18           vc9_0  [vc9]
toolz           0.8.2           py27_0
tornado          4.5.1           py27_0
traitlets         4.3.2           py27_0
unicodecsv         0.14.1          py27_0
vs2008_runtime       9.00.30729.5054        0
vs2015_runtime       14.0.25123           0
wcwidth          0.1.7           py27_0
werkzeug          0.12.2          py27_0
wheel           0.29.0          py27_0
widgetsnbextension     2.0.0           py27_0
win_unicode_console    0.5            py27_0
wrapt           1.10.10          py27_0
xlrd            1.0.0           py27_0
xlsxwriter         0.9.6           py27_0
xlwings          0.10.4          py27_0
xlwt            1.2.0           py27_0
zict            0.1.2           py27_0
zlib            1.2.8           vc9_3  [vc9]
# -*- coding: utf-8 -*-
"""
Created on Mon Jul 21 23:18:50 2014
@author: Carmelo
"""
from math import sqrt
import time
# from numba import jit, int64, double
from numba import jit
i = 0
num1 = 0.0
print (num1)
print (time.asctime(time.localtime(time.time())))
# jit decorator tells Numba to compile this function.
# The argument types will be inferred by Numba when function is called.
@jit
# @jit(double(int64))
def sommaradici(m):
  i = 0
  num = 0.0
  for i in range(0, m):
    num += sqrt(i)
  return num
print ('SommaRadici', (sommaradici(100000001)))
print (time.asctime(time.localtime(time.time())))
And I get this error
Traceback (most recent call last):
 File "C:\Mega\Programmazione\prova\prova.py", line 12, in <module>
  from numba import jit
 File "C:\Users\carme\Anaconda2\lib\site-packages\numba\__init__.py", line 106, in <module>
  _ensure_llvm()
 File "C:\Users\carme\Anaconda2\lib\site-packages\numba\__init__.py", line 73, in _ensure_llvm
  raise ImportError(msg)
ImportError: Numba requires at least version 0.19.0 of llvmlite.
Installed version is 0.15.0.
Please update llvmlite.
[Finished in 0.9s with exit code 1]
[shell_cmd: python -u "C:\Mega\Programmazione\prova\prova.py"]
[dir: C:\Mega\Programmazione\prova]
[path: C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Git\cmd;c:\intelpython2;c:\intelpython2\scripts;C:\Users\carme\Anaconda2;C:\Users\carme\Anaconda2\Library\mingw-w64\bin;C:\Users\carme\Anaconda2\Library\usr\bin;C:\Users\carme\Anaconda2\Library\bin;C:\Users\carme\Anaconda2\Scripts;C:\Users\carme\AppData\Local\Microsoft\WindowsApps;C:\Program Files\Bandizip\;C:\Program Files\Microsoft VS Code\bin]
in my computer, is installed llvmlite 0.19 version
conda list
# packages in environment at C:\Users\carme\Anaconda2:
#
_license          1.1            py27_1
alabaster         0.7.10          py27_0
anaconda          custom          py27_0
anaconda-client      1.6.3           py27_0
anaconda-navigator     1.6.2           py27_0
anaconda-project      0.6.0           py27_0
asn1crypto         0.22.0          py27_0
astroid          1.4.9           py27_0
astropy          1.3.2        np112py27_0
babel           2.4.0           py27_0
backports         1.0            py27_0
backports_abc       0.5            py27_0
beautifulsoup4 Â Â Â Â Â Â 4.6.0 Â Â Â Â Â Â Â Â Â Â py27_0
bitarray          0.8.1           py27_1
blaze           0.10.1          py27_0
bleach           1.5.0           py27_0
bokeh           0.12.5          py27_1
boto            2.46.1          py27_0
bottleneck         1.2.1        np112py27_0
bzip2 Â Â Â Â Â Â Â Â Â Â 1.0.6 Â Â Â Â Â Â Â Â Â Â vc9_3 Â [vc9]
cdecimal          2.3            py27_2
cffi            1.10.0          py27_0
chardet          3.0.3           py27_0
click           6.7            py27_0
cloudpickle        0.2.2           py27_0
clyent           1.2.2           py27_0
colorama          0.3.9           py27_0
comtypes          1.1.2           py27_0
conda           4.3.23          py27_0
conda-env         2.6.0             0
configparser        3.5.0           py27_0
console_shortcut      0.1.1           py27_1
contextlib2 Â Â Â Â Â Â Â 0.5.5 Â Â Â Â Â Â Â Â Â Â py27_0
cryptography        1.8.1           py27_0
curl            7.52.1           vc9_0  [vc9]
cycler           0.10.0          py27_0
cython           0.25.2          py27_0
cytoolz          0.8.2           py27_0
dask            0.14.3          py27_1
datashape         0.5.4           py27_0
decorator         4.0.11          py27_0
distributed        1.16.3          py27_0
docutils          0.13.1          py27_0
entrypoints        0.2.2           py27_1
enum34 Â Â Â Â Â Â Â Â Â Â 1.1.6 Â Â Â Â Â Â Â Â Â Â py27_0
et_xmlfile         1.0.1           py27_0
fastcache         1.0.2           py27_1
flask           0.12.2          py27_0
flask-cors         3.0.2           py27_0
freetype          2.5.5           vc9_2  [vc9]
funcsigs          1.0.2           py27_0
functools32 Â Â Â Â Â Â Â 3.2.3.2 Â Â Â Â Â Â Â Â Â py27_0
futures          3.1.1           py27_0
get_terminal_size     1.0.0           py27_0
gevent           1.2.1           py27_0
greenlet          0.4.12          py27_0
grin            1.2.1           py27_3
h5py            2.7.0        np112py27_0
hdf5 Â Â Â Â Â Â Â Â Â Â Â 1.8.15.1 Â Â Â Â Â Â Â Â Â vc9_4 Â [vc9]
heapdict          1.0.0           py27_1
html5lib          0.999           py27_0
icu            57.1            vc9_0  [vc9]
idna            2.5            py27_0
imagesize         0.7.1           py27_0
ipaddress         1.0.18          py27_0
ipykernel         4.6.1           py27_0
ipython          5.3.0           py27_0
ipython_genutils      0.2.0           py27_0
ipywidgets         6.0.0           py27_0
isort           4.2.5           py27_0
itsdangerous        0.24           py27_0
jdcal           1.3            py27_0
jedi            0.10.2          py27_2
jinja2 Â Â Â Â Â Â Â Â Â Â 2.9.6 Â Â Â Â Â Â Â Â Â Â py27_0
jpeg            9b             vc9_0  [vc9]
jsonschema         2.6.0           py27_0
jupyter          1.0.0           py27_3
jupyter_client       5.0.1           py27_0
jupyter_console      5.1.0           py27_0
jupyter_core        4.3.0           py27_0
lazy-object-proxy     1.2.2           py27_0
libpng           1.6.27           vc9_0  [vc9]
libtiff          4.0.6           vc9_3  [vc9]
llvmlite          0.19.0          py27_0
locket           0.2.0           py27_1
lxml            3.7.3           py27_0
markupsafe         0.23           py27_2
matplotlib         2.0.2        np112py27_0
menuinst          1.4.7           py27_0
mistune          0.7.4           py27_0
mkl            2017.0.1            0
mkl-service        1.1.2           py27_3
mpmath           0.19           py27_1
msgpack-python       0.4.8           py27_0
multipledispatch      0.4.9           py27_0
navigator-updater     0.1.0           py27_0
nbconvert         5.1.1           py27_0
nbformat          4.3.0           py27_0
networkx          1.11           py27_0
nltk            3.2.3           py27_0
nose            1.3.7           py27_1
notebook          5.0.0           py27_0
numba           0.34.0        np112py27_0
numexpr          2.6.2        np112py27_0
numpy           1.12.1          py27_0
numpydoc          0.6.0           py27_0
odo            0.5.0           py27_1
olefile          0.44           py27_0
openpyxl          2.4.7           py27_0
openssl          1.0.2l           vc9_0  [vc9]
packaging         16.8           py27_0
pandas           0.20.1        np112py27_0
pandocfilters       1.4.1           py27_0
partd           0.3.8           py27_0
path.py          10.3.1          py27_0
pathlib2 Â Â Â Â Â Â Â Â Â 2.2.1 Â Â Â Â Â Â Â Â Â Â py27_0
patsy           0.4.1           py27_0
pep8 Â Â Â Â Â Â Â Â Â Â Â 1.7.0 Â Â Â Â Â Â Â Â Â Â py27_0
pickleshare        0.7.4           py27_0
pillow           4.1.1           py27_0
pip            9.0.1           py27_1
ply            3.10           py27_0
prompt_toolkit       1.0.14          py27_0
psutil           5.2.2           py27_0
py             1.4.33          py27_0
pycosat          0.6.2           py27_0
pycparser         2.17           py27_0
pycrypto          2.6.1           py27_6
pycurl           7.43.0          py27_2
pyflakes          1.5.0           py27_0
pygments          2.2.0           py27_0
pylint           1.6.4           py27_1
pyodbc           4.0.16          py27_0
pyopenssl         17.0.0          py27_0
pyparsing         2.1.4           py27_0
pyqt            5.6.0           py27_2
pytables          3.2.2        np112py27_4
pytest           3.0.7           py27_0
python           2.7.13             1
python-dateutil      2.6.0           py27_0
pytz            2017.2          py27_0
pywavelets         0.5.2        np112py27_0
pywin32 Â Â Â Â Â Â Â Â Â 220 Â Â Â Â Â Â Â Â Â Â Â py27_2
pyyaml           3.12           py27_0
pyzmq           16.0.2          py27_0
qt             5.6.2           vc9_4  [vc9]
qtawesome         0.4.4           py27_0
qtconsole         4.3.0           py27_0
qtpy            1.2.1           py27_0
requests          2.14.2          py27_0
rope            0.9.4           py27_1
ruamel_yaml        0.11.14          py27_1
scandir          1.5            py27_0
scikit-image        0.13.0        np112py27_0
scikit-learn        0.18.1        np112py27_1
scipy           0.19.0        np112py27_0
seaborn          0.7.1           py27_0
setuptools         27.2.0          py27_1
simplegeneric       0.8.1           py27_1
singledispatch       3.4.0.3          py27_0
sip            4.18           py27_0
six            1.10.0          py27_0
snowballstemmer      1.2.1           py27_0
sortedcollections     0.5.3           py27_0
sortedcontainers      1.5.7           py27_0
sphinx           1.5.6           py27_0
spyder           3.1.4           py27_0
sqlalchemy         1.1.9           py27_0
ssl_match_hostname     3.4.0.2          py27_1
statsmodels        0.8.0        np112py27_0
subprocess32 Â Â Â Â Â Â Â 3.2.7 Â Â Â Â Â Â Â Â Â Â py27_0
sympy           1.0            py27_0
tblib           1.3.2           py27_0
testpath          0.3            py27_0
tk             8.5.18           vc9_0  [vc9]
toolz           0.8.2           py27_0
tornado          4.5.1           py27_0
traitlets         4.3.2           py27_0
unicodecsv         0.14.1          py27_0
vs2008_runtime       9.00.30729.5054        0
vs2015_runtime       14.0.25123           0
wcwidth          0.1.7           py27_0
werkzeug          0.12.2          py27_0
wheel           0.29.0          py27_0
widgetsnbextension     2.0.0           py27_0
win_unicode_console    0.5            py27_0
wrapt           1.10.10          py27_0
xlrd            1.0.0           py27_0
xlsxwriter         0.9.6           py27_0
xlwings          0.10.4          py27_0
xlwt            1.2.0           py27_0
zict            0.1.2           py27_0
zlib            1.2.8           vc9_3  [vc9]