For loops that do not use loop variables in contactArray function.

[eskiyerli]

In this code, there are for loops for i and j variables, but there is nothing in the loops that refer to these variables.

#***********************************************************************************************************************
# contactArray
#***********************************************************************************************************************
def contactArray(self, pathLayer, contLayer, xl, yl, xh, yh, ox, oy, ws, ds):
    eps = self.tech.getTechParams()['epsilon1']

    w = xh-xl
    h = yh-yl

    mlist = list()

    nx = floor((w-ox*2+ds)/(ws+ds)+eps)
    if (nx <= 0) :
        return mlist

    dsx = 0
    if (nx == 1) :
        dsx = 0
    else :
        dsx = (w-ox*2-ws*nx)/(nx-1)

    ny = floor((h-oy*2+ds)/(ws+ds)+eps)
    if (ny <= 0) :
        return mlist

    dsy = 0
    if (ny == 1) :
        dsy = 0
    else :
        dsy = (h-oy*2-ws*ny)/(ny-1)

    x = 0
    if (nx == 1) :
        x = (w-ws)/2
    else :
        x = ox

    if pathLayer :
        mlist.append(dbCreateRect(self, pathLayer, Box(xl, yl, xh, yh)))

>  for i in range(int(nx)) : 
    #for(i=1; i<=nx; i++) {
        y = 0
        if ny == 1 :
            y = (h-ws)/2
        else :
            y = oy

        **for j in range(int(ny)) :**
        #for(j=1; j<=ny; j++) {
            mlist.append(dbCreateRect(self, contLayer, Box(xl+tog(x), yl+tog(y), xl+tog(x+ws), yl+tog(y+ws))))
            y = y+ws+dsy

        x = x+ws+dsx

    if pathLayer :
        mlist.append(dbCreateRect(self, pathLayer, Box(xl, yl, xh, yh)))

    return mlist

[sergeiandreyev]

@eskiyerli, thank you for the question! there is no need to use them, the i and j for-loop variables are used here just to limit the loop run to a specific number of iterations, nothing more. Still as you can see there was an attempt to tune this (for(i=1; i<=nx; i++) { lines are commented)

[sergeiandreyev]

Hello @eskiyerli, does it answer your question?

[eskiyerli]

Interesting way of doing loops but this indeed answers my question.

[Nado15]

The Pythonic way to handle unused indices is to use an underscore (_):

for _ in range(int(nx)) :     
        for _ in range(int(ny)) :