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# Mathieu Blondel, September 2010

import numpy as np
from numpy import linalg
import cvxopt
import cvxopt.solvers

def linear_kernel(x1, x2):
    return np.dot(x1, x2)

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import time
class Timer:

    def __enter__(self):
        self.start = time.clock()
        return self

    def __exit__(self,*args):
        self.end = time.clock()
        self.interval = self.end-self.start

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.       repeat last command
>G      increase the indentation from current line until end of file
A       appends at the end of current line
f{char} look ahead for specified character
;       repeat last search of f command
,       repeat last search of f command in reverse
cw      deletes to end of word and drops into Insert mode

# moving around
gg      go to top of file

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# http://stackoverflow.com/questions/4060221/how-to-reliably-open-a-file-in-the-same-directory-as-a-python-script?utm_source=feedly

__location__ = os.path.realpath(
    os.path.join(os.getcwd(), os.path.dirname(__file__)))

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# http://www.mingw.org/wiki/Getting_Started
# http://sourceforge.net/projects/mingw/files/Installer/mingw-get-inst/
# install MinGW in C:\MinGW
# Add C:\MinGW\bin to PATH

# Create distutils.cfg in C:\Python27\Lib\distutils\distutils.cfg to be:
# [build]
# compiler=mingw32

# http://stackoverflow.com/questions/6034390/compiling-with-cython-and-mingw-produces-gcc-error-unrecognized-command-line-o

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# generate new key
ssh-keygen -t rsa -C "your-email-address"

# attach new key
eval "$(ssh-agent)"
ssh-add ~/.ssh/id_rsa_NEW

# create config
vi config

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import sys

def set_trace():
    from IPython.core.debugger import Pdb
    Pdb(color_scheme='Linux').set_trace(sys._getframe().f_back)
def debug(f, *args, **kwargs):
    from IPython.core.debugger import Pdb
    pdb = Pdb(color_scheme='Linux')
    return pdb.runcall(f, *args, **kwargs)

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def NewTorIP():
    s = socket.socket()
    s.connect(('localhost', 9051))	
    s.send("AUTHENTICATE\r\n")
    r = s.recv(1024)
    if r.startswith('250'):
        s.send("signal NEWNYM\r\n")
        r = s.recv(1024)
        if r.startswith('250'):
            return True

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# -*- coding: utf-8 -*-
"""
example use of pandas with oracle mysql postgresql sqlite
    - updated 9/18/2012 with better column name handling; couple of bug fixes.
    - used ~20 times for various ETL jobs.  Mostly MySQL, but some Oracle. 

    to do:  
            save/restore index (how to check table existence? just do select count(*)?), 
            finish odbc, 
            add booleans?, 

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# http://stackoverflow.com/questions/13570178/itter-from-some-odbc-connection-to-pandas-table-with-out-a-csv
import pyodbc

import pandas.io.sql as psql

cnxn = pyodbc.connect(your_connection_info) 
cursor = cnxn.cursor()
sql = ("""SELECT * FROM Source""")

df = psql.frame_query(sql, cnxn)