Update make_crossword.py

[richlysakowski]

Trying to get this to work in Python 3, but it throws errors that I don't understand.
Made the following change to the lambda function, but I still get an error (see below):

def vertices(row, col):
""" order is the tuple to which the map will apply the lambda function.
The lambda function calculates a tuple of offsets based on cell sizes of 100.
The vertices are calculated results from applying map() to the iterable order.
The return statement joins together the tuples
"""
order = ((0, 0), (0, 1), (1, 1), (1, 0))
# the following code was from Python 2. It needs to be updated for Lambda functions in Python 3
# vertices = map(lambda (x,y) : ((row + x) * size, (col + y) * size), order)
vertices = map(lambda x,y : ((row + x) * size, (col + y) * size), order)
return ' '.join(["%s,%s" % vertex for vertex in vertices])

def vertices(row, col):
""" order is the tuple to which the map will apply the lambda function.
The lambda function calculates a tuple of offsets based on cell sizes of 100.
The vertices are calculated results from applying map() to the iterable order.
The return statement joins together the tuples
"""
order = ((0, 0), (0, 1), (1, 1), (1, 0))
# the following code was from Python 2. It needs to be updated for Lambda functions in Python 3
# vertices = map(lambda (x,y) : ((row + x) * size, (col + y) * size), order)
vertices = map(lambda x,y : ((row + x) * size, (col + y) * size), order)
return ' '.join(["%s,%s" % vertex for vertex in vertices])

I've tested it in Python 2 today and that doesn't work either.

Someone please help. I'd like to get this working.