Simulating Pointers in Python

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This can be done explicitly.

class ref:
    def __init__(self, obj): self.obj = obj
    def get(self):    return self.obj
    def set(self, obj):      self.obj = obj

a = ref([1, 2])
b = a
print(a.get())  # => [1, 2]
print(b.get())  # => [1, 2]

b.set(2)
print(a.get())  # => 2
print(b.get())  # => 2

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