python中的numpy
开始学习用python实现机器学习的算法,用到了numpy库,好多函数不清楚。
google上找到numpy的官网,可以链接到numpy的reference:http://docs.scipy.org/doc/numpy/reference/
这里仅记录学习过程中用到的:
1. 下载readline模块
http://newcenturycomputers.net/projects/readline.html
2. install readlinemodule
3. edit and configure pythonstartup file%USERPROFILE%中,这是个系统变量,路径是c:\user\用户名\
# python startup file
import sys
import readline
import rlcompleter
import atexit
import os
# tab completion
readline.parse_and_bind('tab: complete')
# history file
histfile = os.path.join(os.environ['HOME'], '.pythonhistory')
try:
readline.read_history_file(histfile)
except IOError:
pass
atexit.register(readline.write_history_file, histfile)
del os, histfile, readline, rlcompleter
import sys
import readline
import rlcompleter
import atexit
import os
# tab completion
readline.parse_and_bind('tab: complete')
# history file
histfile = os.path.join(os.environ['HOME'], '.pythonhistory')
try:
readline.read_history_file(histfile)
except IOError:
pass
atexit.register(readline.write_history_file, histfile)
del os, histfile, readline, rlcompleter
4. add the enviroment varable to system with administrator role
For windowns
pythonstartupf=path/pythonstartup.py
将.startup.py放到%USERPROFILE%
添加环境变量PYTHONSTARTUP,
值为%USERPROFILE%\.startup.py
For Linux
add the following to you~/.bash_profile
export PYTHONSTARTUP=~/.pythonstartup