I have written some classes I would like to test by creating multiple instances of my classes. I would like those instances to have names following the pattern p1, p2, etc:
p1 = Point(1,1)
p2 = Point(2,2)
p3 = Point(3,3)
Is there a way to do this quickly for a lot of variables? Something like this:
for i in range(1,1000):
*magic goes here*
isinstance(p500, Point) # True
It's called a list:
p = [Point(1, 1), Point(2, 2), Point(3, 3)]
Now p[0] is your p1, et cetera.
p = [Point(i, i) for i in range(1, 1000)]
isinstance(p[500], Point) # True
You can modify the current scope changing globals()
For instance:
globals()['p234'] = Point(1, 2)
print p234
This is however, an extremely poor quality approach: hard to understand, maintain, creates a horrible scope polution and it is slow (although this does not probably matter). Use a proper data container, I would suggest a list:
points = [Point(i, i) for i in xrange(500)]
assert isinstance(p[-1], Point)
This way you can do an assert on every object like:
points = [Point(i, i) for i in xrange(500)]
for point in points:
assert isinstance(point, Point)
globals() or locals(). Just use a list.
you could store them as keys in a dictionary
vars_dict = {}
for i in range(1,1000):
vars_dict['p{}'.format(i)] = Point(i, i)
isinstance(vars_dict['p500'], Point) # True
or in an iterable as @RemcoGerlich did
