这段代码是什么时候挂的

一段少了冒号的代码：

if x > 1
    y = 2

拿去编译再运行，看它在哪一步挂：

def when_fails(src):
    """这段源码是编译期就挂，还是跑起来才挂"""
    try:
        code = compile(src, "<s>", "exec")
    except SyntaxError:
        return "编译期"
    try:
        exec(code, {})
    except NameError:
        return "运行期"
    return "跑通了"

SRC = 'if x > 1\n    y = 2'
print(when_fails(SRC))