circuitpython/tests/basics/annotate_var.py

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# test PEP 526, variable annotations
x: int
print("x" in globals())
x: int = 1
print(x)
t: tuple = 1, 2
print(t)
# a pure annotation in a function makes that variable local
def f():
x: int
try:
print(x)
except NameError:
print("NameError")
f()
# here, "x" should remain a global
def f():
x.y: int
print(x)
f()