I have a defined function:

```
def micronToStep(v):
#approximately 62nm/step
return round((v * 1000)/62)
```

And the command `for range()`

loop:

```
xyStep = 5
xRange = 400
for x in range(-micronToStep(xRange/2), micronToStep(xRange/2) - micronToStep(xyStep), micronToStep(xyStep))
```

For `xyStep = 5`

, `xRange = 400`

the command: `len(range(-micronToStep(xRange/2), micronToStep(xRange/2) - micronToStep(xyStep), micronToStep(xyStep)))`

returns `79`

, which not exceed the limit `xRange/xyStep = 80`

.

But for `xyStep = 1`

, `xRange = 400`

the `len(range())`

function returns incorrect value `403`

instead of value less or equal to `xRange/xyStep = 400`

.

I think the problem lies in `micronToStep()`

function.

How to correct this, that `for range()`

loop would not exceed the limit of xRange/xyStep by number of iterations?