File: assign_expr_syntaxerror.py

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# test SyntaxError with := operator

def test(code):
    try:
        print(eval(code))
    except SyntaxError:
        print('SyntaxError')

test("x := 1")
test("((x, y) := 1)")
test("([i := i + 1 for i in range(4)])")
test("([i := -1 for i, j in [(1, 2)]])")
test("([[(i := j) for i in range(2)] for j in range(2)])")

# this is currently allowed in MicroPython, but not in CPython
test("([[(j := i) for i in range(2)] for j in range(2)])")