[Python (1/3)] 初识Py in 恆逸

installations

pip install virtualenv virtualenvwrapper ipython ipython[note] matplotlib pyreadline pandas numpy datareader folium geocoder graphviz pillow bs4 jupyter

数值运算工具 :

scipy.org
scikit-learn.org/stable

Virtualenv

virtualenvvirtualenvwrapperlistdirworkonrun<>\Scripts\activateworkon exitdeactivatedeactivatenewvirtualenv (~/)mkvirtualenv (~/Envs)

Config

-Xms min
-Xmx max

stackheap -> dynamic allocationglobalconstantprogram

Free Notes

operators

" = ' in python

encoding

diff in length len(str)

PythonPython3bytedefault, 'str'bytes, b'strings'unicodeunicode, u'strings'default, 'str'

divide

PythonPython3type///ans5/2(2), 5.0/2(2.5)/