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A while ago I found the following website, from which I copied the source code and pasted it into my own jupyter notebook.
%load_ext signature
%matplotlib inline
import requests
import helpers
import pandas as pd
import matplotlib as mpl
import matplotlib.pyplot as plt
from lxml import html
from datetime import datetime
# Set style and meta info.
mpl.style.use('ramiro')
url = 'https://en.wikipedia.org/wiki/Wikipedia:Database_reports/Pages_with_the_most_revisions'
end_date = '27 March 2015'
chartinfo = 'Author: Ramiro Gómez - ramiro.org • Data: ' + url.replace('https://', '')
infosize = 12
# Extract first wikitable from page
xpath = '//*[contains(@class, "wikitable")]'
tree = html.fromstring(requests.get(url).text)
table = tree.xpath(xpath)[0]
raw_html = html.tostring(table)
# Create dataframe from html table
df = pd.read_html(raw_html, header=0, index_col='Page')[0]
df.index = df.index.map(lambda x: x.replace('_', ' '))
df.head(10)
Now I rediscovered this notebook and wanted to run it. However, it doesn't work:
ImportError Traceback (most recent call last)
<ipython-input-1-cd5561f41831> in <module>()
----> 1 get_ipython().magic('load_ext signature')
2 get_ipython().magic('matplotlib inline')
3
4 import requests
5 import helpers
/home/xiaolong/development/anaconda3/envs/jupyter/lib/python3.5/site-packages/IPython/core/interactiveshell.py in magic(self, arg_s)
2161 magic_name, _, magic_arg_s = arg_s.partition(' ')
2162 magic_name = magic_name.lstrip(prefilter.ESC_MAGIC)
-> 2163 return self.run_line_magic(magic_name, magic_arg_s)
2164
2165 #-------------------------------------------------------------------------
/home/xiaolong/development/anaconda3/envs/jupyter/lib/python3.5/site-packages/IPython/core/interactiveshell.py in run_line_magic(self, magic_name, line)
2082 kwargs['local_ns'] = sys._getframe(stack_depth).f_locals
2083 with self.builtin_trap:
-> 2084 result = fn(*args,**kwargs)
2085 return result
2086
<decorator-gen-64> in load_ext(self, module_str)
/home/xiaolong/development/anaconda3/envs/jupyter/lib/python3.5/site-packages/IPython/core/magic.py in <lambda>(f, *a, **k)
191 # but it's overkill for just that one bit of state.
192 def magic_deco(arg):
--> 193 call = lambda f, *a, **k: f(*a, **k)
194
195 if callable(arg):
/home/xiaolong/development/anaconda3/envs/jupyter/lib/python3.5/site-packages/IPython/core/magics/extension.py in load_ext(self, module_str)
64 if not module_str:
65 raise UsageError('Missing module name.')
---> 66 res = self.shell.extension_manager.load_extension(module_str)
67
68 if res == 'already loaded':
/home/xiaolong/development/anaconda3/envs/jupyter/lib/python3.5/site-packages/IPython/core/extensions.py in load_extension(self, module_str)
82 if module_str not in sys.modules:
83 with prepended_to_syspath(self.ipython_extension_dir):
---> 84 __import__(module_str)
85 mod = sys.modules[module_str]
86 if self._call_load_ipython_extension(mod):
ImportError: No module named 'signature'
I don't know why this module is missing or what it actually does.
How can I fix this and get the code running?
Additional info:
I have the jupyter notebook in a virtual environment, which has the following packages:
# packages in environment at /home/xiaolong/development/anaconda3/envs/jupyter:
#
abstract-rendering 0.5.1 np110py35_0 defaults
alabaster 0.7.7 py35_0 defaults
anaconda 2.5.0 np110py35_0 defaults
anaconda-client 1.2.2 py35_0 defaults
argcomplete 1.0.0 py35_1 defaults
astropy 1.1.1 np110py35_0 defaults
atlas 0.27.0 <pip>
babel 2.2.0 py35_0 defaults
beautifulsoup4 4.4.1 py35_0 defaults
bitarray 0.8.1 py35_0 defaults
blaze 0.9.0 <pip>
blaze-core 0.9.0 py35_0 defaults
bokeh 0.11.0 py35_0 defaults
boto 2.39.0 py35_0 defaults
bottleneck 1.0.0 np110py35_0 defaults
brewer2mpl 1.4.1 <pip>
calysto-prolog 0.8.3 <pip>
cffi 1.2.1 py35_0 defaults
clyent 1.2.0 py35_0 defaults
colorama 0.3.6 py35_0 defaults
configobj 5.0.6 py35_0 defaults
cryptography 1.0.2 py35_0 defaults
curl 7.45.0 0 defaults
cycler 0.9.0 py35_0 defaults
cython 0.23.4 py35_0 defaults
cytoolz 0.7.5 py35_0 defaults
datashape 0.5.0 py35_0 defaults
decorator 4.0.6 py35_0 defaults
docutils 0.12 py35_0 defaults
dynd f641248 <pip>
dynd-python 0.7.1 py35_0 defaults
emcee 2.1.0 <pip>
et-xmlfile 1.0.1 <pip>
et_xmlfile 1.0.1 py35_0 defaults
fastcache 1.0.2 py35_0 defaults
flask 0.10.1 py35_1 defaults
fontconfig 2.11.1 5 defaults
freetype 2.5.5 0 defaults
futures 3.0.3 py35_0 defaults
ggplot 0.6.8 <pip>
gmpy2 2.0.7 <pip>
greenlet 0.4.9 py35_0 defaults
h5py 2.5.0 np110py35_4 defaults
hdf5 1.8.15.1 2 defaults
idna 2.0 py35_0 defaults
ipykernel 4.2.2 py35_0 defaults
ipython 4.1.1 py35_0 defaults
ipython-genutils 0.1.0 <pip>
ipython-notebook 4.0.4 py35_0 defaults
ipython-qtconsole 4.0.1 py35_0 defaults
ipython_genutils 0.1.0 py35_0 defaults
ipywidgets 4.1.1 py35_0 defaults
itsdangerous 0.24 py35_0 defaults
jbig 2.1 0 defaults
jdcal 1.2 py35_0 defaults
jedi 0.9.0 py35_0 defaults
jinja2 2.8 py35_0 defaults
jpeg 8d 0 <unknown>
jsonschema 2.4.0 py35_0 defaults
jupyter 1.0.0 py35_1 defaults
jupyter-client 4.1.1 <pip>
jupyter-console 4.1.0 <pip>
jupyter-core 4.0.6 <pip>
jupyter-kernel-test 0.1 <pip>
jupyter_client 4.1.1 py35_0 defaults
jupyter_console 4.1.0 py35_0 defaults
jupyter_core 4.0.6 py35_0 defaults
libdynd 0.7.1 0 defaults
libffi 3.0.13 0 <unknown>
libgfortran 1.0 0 defaults
libpng 1.6.17 0 <unknown>
libsodium 1.0.3 0 defaults
libtiff 4.0.6 1 defaults
libxml2 2.9.2 0 <unknown>
libxslt 1.1.28 0 <unknown>
llvmlite 0.8.0 py35_0 defaults
lmfit 0.8.2 <pip>
lxml 3.5.0 py35_0 defaults
markupsafe 0.23 py35_0 defaults
matplotlib 1.5.1 np110py35_0 defaults
metakernel 0.11.5 <pip>
metakernel-bash 0.11.3 <pip>
mistune 0.7.1 py35_0 defaults
mkl 11.3.1 0 defaults
mkl-service 1.1.2 py35_0 defaults
multipledispatch 0.4.8 py35_0 defaults
nbconvert 4.1.0 py35_0 defaults
nbformat 4.0.1 py35_0 defaults
networkx 1.11 py35_0 defaults
nltk 3.1 py35_0 defaults
nose 1.3.7 py35_0 defaults
notebook 4.1.0 py35_0 defaults
numba 0.23.1 np110py35_0 defaults
numexpr 2.4.6 np110py35_1 defaults
numpy 1.10.4 py35_0 defaults
octave-kernel 0.13.2 <pip>
odo 0.4.0 py35_0 defaults
openblas 0.2.14 3 defaults
openpyxl 2.3.2 py35_0 defaults
openssl 1.0.2f 0 defaults
pandas 0.17.1 np110py35_0 defaults
patchelf 0.8 0 defaults
path.py 8.1.2 py35_1 defaults
patsy 0.4.0 np110py35_0 defaults
pep8 1.7.0 py35_0 defaults
pexpect 3.3 py35_0 defaults
pickleshare 0.5 py35_0 defaults
pillow 3.1.0 py35_0 defaults
pip 8.0.2 py35_0 defaults
ply 3.8 py35_0 defaults
psutil 3.4.2 py35_0 defaults
ptyprocess 0.5 py35_0 defaults
py 1.4.31 py35_0 defaults
pyaml 15.8.2 <pip>
pyasn1 0.1.9 py35_0 defaults
pycosat 0.6.1 py35_0 defaults
pycparser 2.14 py35_0 defaults
pycrypto 2.6.1 py35_0 defaults
pycurl 7.19.5.3 py35_0 defaults
pyflakes 1.0.0 py35_0 defaults
pygments 2.1 py35_0 defaults
pymatbridge 0.5.2 <pip>
pyopenssl 0.15.1 py35_1 defaults
pyparsing 2.0.3 py35_0 defaults
pyqt 4.11.4 py35_1 defaults
pytables 3.2.2 np110py35_0 defaults
pytest 2.8.5 py35_0 defaults
python 3.5.1 0 defaults
python-contrib-nbextensions alpha <pip>
python-dateutil 2.4.2 py35_0 defaults
pytz 2015.7 py35_0 defaults
pyyaml 3.11 py35_1 defaults
pyzmq 15.2.0 py35_0 defaults
qt 4.8.7 1 defaults
qtconsole 4.1.1 py35_0 defaults
readline 6.2 2 <unknown>
redis 2.6.9 0 <unknown>
redis-py 2.10.3 py35_0 defaults
requests 2.9.1 py35_0 defaults
rope 0.9.4 py35_1 defaults
rope-py3k 0.9.4.post1 <pip>
satlas 0.1.0b17 <pip>
scikit-image 0.11.3 np110py35_0 defaults
scikit-learn 0.17 np110py35_2 defaults
scipy 0.17.0 np110py35_1 defaults
setuptools 19.6.2 py35_0 defaults
simplegeneric 0.8.1 py35_0 defaults
sip 4.16.9 py35_0 defaults
six 1.10.0 py35_0 defaults
snowballstemmer 1.2.1 py35_0 defaults
sockjs-tornado 1.0.1 py35_0 defaults
sphinx 1.3.5 py35_0 defaults
sphinx-rtd-theme 0.1.9 <pip>
sphinx_rtd_theme 0.1.9 py35_0 defaults
spyder 2.3.8 py35_0 defaults
spyder-app 2.3.8 py35_0 defaults
sqlalchemy 1.0.11 py35_0 defaults
sqlite 3.9.2 0 defaults
statsmodels 0.6.1 np110py35_0 defaults
sympy 0.7.6.1 py35_0 defaults
tables 3.2.2 <pip>
terminado 0.5 py35_1 defaults
threadpool 1.3.2 <pip>
tk 8.5.18 0 <unknown>
toolz 0.7.4 py35_0 defaults
tornado 4.3 py35_0 defaults
tqdm 3.8.0 <pip>
traitlets 4.1.0 py35_0 defaults
unicodecsv 0.14.1 py35_0 defaults
util-linux 2.21 0 <unknown>
werkzeug 0.11.3 py35_0 defaults
wheel 0.29.0 py35_0 defaults
xlrd 0.9.4 py35_0 defaults
xlsxwriter 0.8.4 py35_0 defaults
xlwt 1.0.0 py35_0 defaults
xz 5.0.5 1 defaults
yaml 0.1.6 0 <unknown>
zeromq 4.1.3 0 defaults
zlib 1.2.8 0 <unknown>
715
I face this problem too , did a little exploration, and solved it.
Please read about %load_ext magic. Apparently signature is an extension, to use it you need to install it first.
Now the problem is you need to find the code of signature.
It took me longer to find the code. The tutorial is written by Ramiro Gómez, I found his webpage on github and the script.
To install you can use %install_ext magic in the iPython shell.
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