小狐狸事務所: 免費的線上 Python 執行環境 PythonAnywhere

今天在找可以執行 Django 的虛擬主機時找到下面這篇 :

# 5 Platforms That Provide Free Django App Hosting

其中介紹的第一家主機商為 PythonAnyther, 提供免費的 Python 執行環境與網頁空間給初學者 :

# https://www.pythonanywhere.com

免費帳號的功能受到如下限制 :

只能建立一個 App (應用程式)
網外存取 Internet 有限制
CPU 與儲存有限制 (一天 100 秒 CPU 時間, 512MB 儲存)
不提供 Jupyter (但有 IPython)
只能有兩個 Console (Bash 與 Python)

但這對於初學者做測試練習或佈署單一 App 而言, 這些免費資源應該綽綽有餘了.

按 "Create a Beginner account" 按鈕進入註冊頁面 :

填好帳密按 "Register" 鈕後會收到確認信, 必須按信中的 "Click this link" 超連結才算完成註冊程序 :

然後到 PythonAnywhere 首頁右上方按 "Log in" 登入後就會進入後台管理頁面的 Dashboard 了 :

左上角會顯示目前已使用的 CPU 時間, 免費帳戶每天有 100 秒的 CPU 使用時間, 每天會重設一次. 其次, 免費帳戶儲存空間是 512MB.

左下角是控制台, 提供 Bash 命令列與 Python shell 兩種介面, 例如按 "Bash" 鈕會在網頁中開啟 Bash 介面, 可以下達 Linux 指令, 例如用 pip3 安裝 Python 函式庫等 :

用 pip3 install ta-lib 安裝 TaLib 技術分析套件 :

15:46 ~ $ pip3 install ta-lib
Looking in links: /usr/share/pip-wheels
Requirement already satisfied: ta-lib in /usr/lib/python3.7/site-packages (0.4.17)
Requirement already satisfied: numpy in /usr/lib/python3.7/site-packages (from ta-lib) (1.14.5)

參考這篇 :

# Python Fintech 學習筆記 : 安裝技術指標套件 TA-Lib

Pythonanywhere 的 Console 控制台可以按 Ctrl+V 貼上 (paste) 複製而來的程式碼, 參考 :

# How do I copy and paste from PythonAnywhere consoles?

>>> import numpy as np
>>> import talib
>>> close=np.random.random(100)
>>> print(talib.SMA(close, 5))
[ nan nan nan nan 0.34808801 0.52264937
0.64351182 0.75393635 0.74234353 0.71778949 0.64971961 0.67491763
0.57671857 0.54421272 0.65457444 0.58743057 0.50533167 0.48185494
0.54440284 0.53688983 0.50845023 0.54553876 0.64047661 0.6511895
0.5726648 0.65876775 0.6509716 0.66804279 0.62187143 0.57060829
0.53847643 0.48251872 0.47543778 0.44659462 0.42806644 0.47181104
0.58388838 0.59820481 0.50844235 0.52106092 0.43131579 0.34949637
0.35403116 0.51843584 0.66692686 0.79717878 0.84477143 0.79335296
0.6481571 0.55042118 0.52710926 0.418394 0.32731985 0.46259856
0.52543889 0.38548079 0.51638148 0.50976843 0.41726575 0.30277577
0.32223635 0.18563746 0.21352087 0.16943644 0.16110543 0.29269783
0.39163323 0.49826001 0.63180882 0.65823083 0.68998768 0.71574013
0.5943405 0.42551315 0.38440621 0.19944519 0.23438315 0.24946455
0.37982067 0.51549111 0.65462005 0.54870075 0.55923184 0.59187699

以 pip3 list 顯示已經安裝過的套件, 包括 Django, Numpy, Pandas, Matplotlib, Keras 等都已安裝, 非常豐富 :

15:47 ~ $ pip3 list
Package Version
-------------------------------- -----------
alabaster 0.7.11
alembic 1.0.0
aniso8601 3.0.2
appdirs 1.4.3
arrow 0.12.1
asn1crypto 0.24.0
astropy 3.0.3
async 0.6.2
atomicwrites 1.1.5
attrs 18.1.0
Babel 2.6.0
backports.functools-lru-cache 1.5
banal 0.3.7
bcrypt 3.1.4
beautifulsoup4 4.6.0
biopython 1.72
black 18.6b4
bleach 2.1.3
blinker 1.4
bokeh 0.13.0
boto 2.49.0
boto3 1.7.83
botocore 1.10.83
bottle 0.12.13
Bottleneck 1.2.1
bottlenose 1.1.8
BTrees 4.5.0
bz2file 0.98
cachetools 2.1.0
cairocffi 0.8.1
CairoSVG 2.1.3
certifi 2018.8.13
cffi 1.11.5
cftime 1.0.1
Chameleon 3.4
chardet 3.0.4
cheroot 6.3.3
CherryPy 17.0.0
click 6.7
click-plugins 1.0.3
cligj 0.4.0
cloudpickle 0.5.3
colorama 0.3.9
configobj 5.0.6
coverage 4.5.1
cryptography 2.2.2
cssselect 1.0.3
cssselect2 0.2.1
cycler 0.10.0
Cython 0.28.4
dask 0.18.1
dataset 1.1.0
decorator 4.3.0
dectate 0.13
defusedxml 0.5.0
Django 2.1
django-blog-zinnia 0.20
django-bootstrap-form 3.4
django-classy-tags 0.8.0
django-contrib-comments 1.8.0
django-formtools 2.1
django-js-asset 1.1.0
django-mptt 0.9.0
django-object-tools 1.11.0
django-sekizai 0.10.0
django-tagging 0.4.6
django-treebeard 4.3
django-xmlrpc 0.1.8
djangocms-admin-style 1.2.8
docopt 0.6.2
docutils 0.14
dominate 2.3.1
EasyProcess 0.2.3
entrypoints 0.2.3
et-xmlfile 1.0.1
falcon 1.4.1
feedfinder2 0.0.4
feedgenerator 1.9
feedparser 5.2.1
filebrowser-safe 0.5.0
Fiona 1.7.13
Flask 1.0.2
Flask-Admin 1.5.1
Flask-Babel 0.11.2
Flask-Bcrypt 0.7.1
Flask-Bootstrap 3.3.7.1
Flask-HTTPAuth 3.2.4
Flask-Login 0.4.1
Flask-RESTful 0.3.6
Flask-Script 2.0.6
Flask-SQLAlchemy 2.3.2
Flask-SSLify 0.1.5
Flask-WTF 0.14.2
future 0.16.0
Genshi 0.7
gensim 3.5.0
geographiclib 1.49
geopy 1.15.0
gevent 1.3.5
gitdb 0.6.4
gitdb2 2.0.4
GitPython 2.1.11
gmpy 1.17
google-api-python-client 1.7.4
google-auth 1.5.1
google-auth-httplib2 0.0.3
grappelli-safe 0.5.0
greenlet 0.4.13
grokcore.component 3.1
h5py 2.8.0
html5lib 1.0.1
httplib2 0.11.3
hupper 1.3
idna 2.7
imagesize 1.0.0
IMAPClient 2.0.0
importscan 0.1
inflection 0.3.1
ipykernel 4.8.2
ipyparallel 5.0.1
ipython 4.1.2
ipython-genutils 0.2.0
ipywidgets 5.2.3
isodate 0.6.0
isort 4.3.4
itsdangerous 0.24
jaraco.functools 1.20
jdcal 1.4
jellyfish 0.6.1
jieba3k 0.35.1
Jinja2 2.10
jmespath 0.9.3
jsonschema 2.6.0
jupyter 1.0.0
jupyter-client 5.2.3
jupyter-console 5.2.0
jupyter-core 4.4.0
Keras 2.2.2
Keras-Applications 1.0.4
Keras-Preprocessing 1.0.2
kiwisolver 1.0.1
lxml 4.2.3
Mako 1.0.7
marisa-trie 0.7.5
Markdown 2.6.11
MarkupSafe 1.0
martian 1.2
matplotlib 2.2.2
mechanize 0.2.5
mimerender 0.6.0
mistune 0.8.3
mock 2.0.0
more-itertools 4.3.0
morepath 0.18.1
mots-vides 2015.5.11
mpmath 1.0.0
munch 2.3.2
mysql-connector-python 8.0.11
mysqlclient 1.3.13
nbconvert 5.3.1
nbformat 4.4.0
neo4j-driver 1.6.1
neotime 1.0.0
netCDF4 1.4.0
netifaces 0.10.7
networkx 2.1
newspaper3k 0.2.6
nltk 3.3
normality 0.6.1
nose 1.3.7
notebook 4.2.2
numexpr 2.6.5
numpy 1.14.5
oauth2client 4.1.2
oauthlib 2.1.0
opencv-contrib-python-headless 3.4.2.17
openpyxl 2.5.4
packaging 17.1
pandas 0.23.3
pandocfilters 1.4.2
paramiko 2.4.1
Paste 2.0.3
PasteDeploy 1.5.2
pbr 4.1.0
pdfrw 0.4
peewee 3.5.2
pelican 3.7.1
pep8 1.7.1
persistent 4.2.4.2
pexpect 4.6.0
pickleshare 0.7.4
Pillow 5.2.0
Pint 0.8.1
pip 18.0
plaster 1.0
plaster-pastedeploy 0.6
plotly 3.0.0
pluggy 0.7.1
pocketsphinx 0.1.15
portend 2.3
praw 6.0.0
prawcore 1.0.0
prettytable 0.7.2
prompt-toolkit 1.0.15
protobuf 3.6.1
psutil 5.4.6
psycopg2-binary 2.7.5
ptyprocess 0.6.0
pudb 2018.1
py 1.5.4
py-bcrypt 0.4
py2neo 4.0.0
pyasn1 0.4.3
pyasn1-modules 0.2.2
pycairo 1.17.1
pycparser 2.18
pycrypto 2.6.1
pycurl 7.43.0.2
pyDatalog 0.17.1
pydub 0.22.1
pyenchant 2.0.0
pyflakes 2.0.0
pyflakes3k 0.4.3
pygal 2.4.0
pygeoip 0.3.2
Pygments 2.2.0
PyGObject 3.28.2
PyJWT 1.6.4
Pykka 1.2.1
pymc 2.3.6
pymongo 3.7.1
PyNaCl 1.2.1
pyOpenSSL 18.0.0
pyparsing 2.2.0
Pyphen 0.9.4
pyquery 1.4.0
pyramid 1.9.2
pyserial 3.4
PySocks 1.6.8
pyspotify 2.0.5
PyStemmer 1.3.0
pytesseract 0.2.2
pytest 3.7.1
python-amazon-simple-product-api 2.1.0
python-dateutil 2.7.3
python-editor 1.0.3
python-gettext 3.0
python-Levenshtein 0.12.0
python-magic 0.4.15
python-mimeparse 1.6.0
python-slugify 1.2.5
pytz 2018.5
PyVirtualDisplay 0.2.1
PyWavelets 0.5.2
PyYAML 3.13
pyzmq 17.1.0
qrcode 6.0
qtconsole 4.4.1
Quandl 3.4.0
rdflib 4.2.2
redis 2.10.6
reg 0.11
regex 2018.8.17
repoze.lru 0.7
requests 2.19.1
requests-cache 0.4.13
requests-file 1.4.3
requests-oauthlib 1.0.0
retrying 1.3.3
rpy2 2.8.6
rsa 3.4.2
ruffus 2.7.0
s3transfer 0.1.13
scikit-image 0.14.0
scipy 1.1.0
selenium 2.53.6
setproctitle 1.1.10
setuptools 39.1.0
Shapely 1.6.4.post1
simplegeneric 0.8.1
simplejson 3.16.0
simpy 3.0.11
singledispatch 3.4.0.3
six 1.11.0
smart-open 1.6.0
smmap 0.9.0
smmap2 2.0.4
snowballstemmer 1.2.1
socketpool 0.5.3
sockjs-tornado 1.0.3
SocksiPy-branch 1.1
South 1.0.2
SPARQLWrapper 1.8.2
Sphinx 1.7.6
sphinxcontrib-websupport 1.1.0
splinter 0.7.3
SQLAlchemy 1.2.10
stevedore 1.28.0
stripe 2.0.1
sympy 1.2
TA-Lib 0.4.17
tables 3.4.4
Tempita 0.5.2
tempora 1.13
terminado 0.8.1
testpath 0.3.1
texcaller 0
textblob 0.15.1
tinycss 0.4
tinycss2 0.6.1
tldextract 2.2.0
toml 0.9.4
toolz 0.9.0
tornado 4.5.3
traitlets 4.3.2
transaction 2.2.1
translationstring 1.3
twilio 6.15.0
twitter 1.18.0
tzlocal 1.5.1
uncertainties 3.0.2
Unidecode 1.0.22
update-checker 0.16
uritemplate 3.0.0
urllib3 1.23
urwid 2.0.1
venusian 1.1.0
virtualenv 16.0.0
virtualenv-clone 0.3.0
virtualenvwrapper 4.8.2
visitor 0.1.3
w3lib 1.19.0
waitress 1.1.0
Wand 0.4.4
wcwidth 0.1.7
WeasyPrint 0.42.3
webencodings 0.5.1
WebOb 1.8.2
WebTest 2.0.30
Werkzeug 0.14.1
wheel 0.31.1
wheezy.caching 0.1.114
wheezy.core 0.1.140
wheezy.html 0.1.147
wheezy.http 0.1.344
wheezy.routing 0.1.157
wheezy.security 0.1.64
wheezy.template 0.1.167
wheezy.validation 0.1.135
wheezy.web 0.1.485
Whoosh 2.7.4
widgetsnbextension 1.2.6
WSGIProxy2 0.4.4
WTForms 2.2.1
xgboost 0.72.1
xlrd 1.1.0
xlwt 1.3.0
z3c.pt 3.1.0
zc.buildout 2.12.1
zc.lockfile 1.3.0
ZConfig 3.2.0
zdaemon 4.2.0
ZEO 5.2.0
ZODB 5.4.0
ZODB3 3.11.0
zodbpickle 1.0.2
zope.annotation 4.6.0
zope.app.appsetup 4.0.0
zope.app.publication 4.2.1
zope.app.wsgi 4.1.0
zope.authentication 4.3
zope.browser 2.2.0
zope.browserpage 4.2.0
zope.browserresource 4.2.1
zope.cachedescriptors 4.3.1
zope.catalog 4.2.1
zope.component 4.4.1
zope.configuration 4.1.0
zope.container 4.2.1
zope.contentprovider 4.1.0
zope.contenttype 4.3.0
zope.datetime 4.2.0
zope.deprecation 4.3.0
zope.dottedname 4.2
zope.error 4.4.0
zope.event 4.3.0
zope.exceptions 4.2.0
zope.filerepresentation 4.2.0
zope.formlib 4.4
zope.i18n 4.3.1
zope.i18nmessageid 4.1.0
zope.index 4.3.0
zope.interface 4.5.0
zope.intid 4.3.0
zope.keyreference 4.1.0
zope.lifecycleevent 4.2.0
zope.location 4.1.0
zope.login 2.1.0
zope.minmax 2.2.0
zope.pagetemplate 4.3.0
zope.password 4.3.1
zope.principalregistry 4.2.0
zope.processlifetime 2.2.0
zope.proxy 4.3.0
zope.ptresource 4.1.0
zope.publisher 4.3.2
zope.schema 4.5.0
zope.security 4.2.2
zope.securitypolicy 4.2.0
zope.session 4.2.0
zope.site 4.1.0
zope.size 4.2.0
zope.tal 4.3.1
zope.tales 4.2.0
zope.testbrowser 5.2.4
zope.testing 4.6.2
zope.traversing 4.2.0
zope.viewlet 4.1.0
15:48 ~ $

開啟 Python shell 控制台可選擇 Python 版本, 有 3.7, 3.6, 以及 2.7 可選 :