前段时间我发现了以下website，我从中复制了源代码并将其粘贴到我自己的jupyter notebook中。
%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)
现在我重新发现了这款笔记本，想要运行它。但是，它不起作用：
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'
我不知道为什么这个模块丢失或实际上是什么。
如何解决此问题并使代码运行？
其他信息：
我在虚拟环境中拥有jupyter笔记本，其中包含以下软件包：
# 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>
答案 0 :(得分：4)
我也面对这个问题，做了一点探索，并解决了它。
请阅读%load_ext magic。显然signature是一个扩展，要使用它，您需要先安装它。
现在问题是你需要找到签名代码。
我花了更长的时间才找到代码。该教程由RamiroGómez编写，我在github and the script找到了他的网页。
要安装，您可以在iPython shell中使用%install_ext magic。
答案 1 :(得分：0)