Nested eager/lazy scopes in Python

eager-scopes.py

x = [1]
a = [a for a in x]
print("eager", a)  # eager [1]
x = [2]
print("eager", a)  # eager [1]

x = [1]
def f():
    return list(x)
print("lazy", f())  # lazy [1]
x = [2]
print("lazy", f())  # lazy [2]


x = [1]
class A:
    a = list(x)
print("eager", A.a)  # eager [1]
x = [2]
print("eager", A.a)  # eager [1]

x = [1]
class A:
    def f():
        return list(x)
print("lazy in eager -> lazy", A.f())  # lazy in eager -> lazy [1]
x = [2]
print("lazy in eager -> lazy", A.f())  # lazy in eager -> lazy [2]

x = [1]
def f():
    return [a for a in x]
print("eager in lazy -> lazy", f())  # eager in lazy -> lazy [1]
x = [2]
print("eager in lazy -> lazy", f())  # eager in lazy -> lazy [2]

x = [1]
class A:
    a = [a for a in x]
print("eager in eager -> eager", A.a)  # eager in eager -> eager [1]
x = [2]
print("eager in eager -> eager", A.a)  # eager in eager -> eager [1]

x = [1]
def f():
    def g():
        return list(x)
    return g
print("lazy in lazy -> lazy", f()())  # lazy in lazy -> lazy [1]
x = [2]
print("lazy in lazy -> lazy", f()())  # lazy in lazy -> lazy [2]

x = [1]
class A:
    def f():
        return [a for a in x]
print("eager in lazy in eager -> lazy", A.f())  # eager in lazy in eager -> lazy [1]
x = [2]
print("eager in lazy in eager -> lazy", A.f())  # eager in lazy in eager -> lazy [2]