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from scipy.interpolate import UnivariateSpline
import numpy as np

def curvature_splines(x, y=None, error=0.1):
    """Calculate the signed curvature of a 2D curve at each point
    using interpolating splines.

    Parameters
    ----------
    x,y: numpy.array(dtype=float) shape (n_points, )

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function (x, y = NULL, xtest = NULL, ytest = NULL, ntree = 500, 
            mtry = if (!is.null(y) && !is.factor(y)) max(floor(ncol(x)/3), 
                                                         1) else floor(sqrt(ncol(x))), replace = TRUE, classwt = NULL, 
            cutoff, strata, sampsize = if (replace) nrow(x) else ceiling(0.632 * 
                                                                           nrow(x)), nodesize = if (!is.null(y) && !is.factor(y)) 5 else 1, 
            maxnodes = NULL, importance = FALSE, localImp = FALSE, nPerm = 1, 
            proximity, oob.prox = proximity, norm.votes = TRUE, do.trace = FALSE, 
            keep.forest = !is.null(y) && is.null(xtest), corr.bias = FALSE, 
            keep.inbag = FALSE, ...) 
  {

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[u'0.013*species + 0.005*formation + 0.004*water + 0.004*plant + 0.004*genus + 0.003*white + 0.003*mm + 0.003*brown + 0.002*common + 0.002*sea',
 u'0.008*system + 0.006*data + 0.006*game + 0.004*using + 0.004*systems + 0.004*software + 0.003*model + 0.003*technology + 0.003*information + 0.003*available',
 u'0.014*league + 0.010*club + 0.010*round + 0.009*cup + 0.007*football + 0.007*championship + 0.006*games + 0.006*player + 0.005*teams + 0.005*match',
 u'0.009*party + 0.008*william + 0.008*election + 0.007*london + 0.006*james + 0.006*george + 0.005*thomas + 0.005*elected + 0.005*republican + 0.005*england',
 u'0.010*building + 0.008*district + 0.008*river + 0.008*road + 0.008*station + 0.007*village + 0.006*park + 0.006*town + 0.006*railway + 0.006*historic',
 u'0.014*air + 0.010*ship + 0.008*racing + 0.007*aircraft + 0.006*force + 0.006*car + 0.005*crew + 0.005*navy + 0.005*class + 0.005*race',
 u'0.025*album + 0.019*song + 0.013*band + 0.009*chart + 0.008*songs + 0.008*you + 0.008*track + 0.007*records 

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import Quartz
from AppKit import NSKeyUp, NSSystemDefined, NSEvent

def keyboardTapCallback(proxy, type_, event, refcon):
    # Convert the Quartz CGEvent into something more useful
    if type_ < 0 or type_ > 0x7fffffff:
        print "----- Timed out -----"
        print NSEvent.eventWithCGEvent_(event)
        return event
    keyEvent = NSEvent.eventWithCGEvent_(event)

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