How to place points along a line in a specific offset using python / arcpy?

In case this is helpful to others, i was able to create the following python code using arcpy which will place points at a specified interval based on an input line feature layer.

import arcpy

line_lyr = 'my_line'
pt_lyr =  "my_point"
interval = 200

insertCursor = arcpy.da.InsertCursor(pt_lyr, ["SHAPE@XY"]) # this is the pre-existing pt feature class

with arcpy.da.SearchCursor(line_lyr, ['OID@','SHAPE@','NAME']) as searchCursor: # this is the line feature on which the points will be based
    for row in searchCursor:
        lengthLine = round(row[1].length) # grab the length of the line feature, i'm using round() here to avoid weird rounding errors that prevent the numberOfPositions from being determined
        if int(lengthLine % interval) == 0:
            numberOfPositions = int(lengthLine // interval) - 1
        else:
            numberOfPositions = int(lengthLine // interval)

        print "lengthLine", lengthLine
        print "numberOfPositions", numberOfPositions
        if numberOfPositions > 0: # > 0 b/c we don't want to add a point to a line feature that is less than our interval
            for i in range(numberOfPositions): # using range, allows us to not have to worry about
                distance = (i + 1) * interval
                xPoint = row[1].positionAlongLine(distance).firstPoint.X
                yPoint = row[1].positionAlongLine(distance).firstPoint.Y
                xy = (xPoint, yPoint)
                insertCursor.insertRow([xy])

To do this I would look at Linear Referencing, because once you have a Route Event Layer of type POINT for your addresses, you should be able to use label offsets to place your event points.

I would recommend taking a quick look at this part of the Linear Referencing Tutorial to see if it sounds like what you are after. If it does, prototype it through the ArcMap GUI, and then start on the ArcPy code which I think should be straight forward.

The key concept is that addresses can be considered as point events referenced along a route representing the street.