Python dup2示例

示例#1

def test_dup_dup2_non_inheritable():
    for preset in [False, True]:
        fd1, fd2 = os.pipe()
        rposix.set_inheritable(fd1, preset)
        rposix.set_inheritable(fd2, preset)
        fd3 = rposix.dup(fd1, True)
        assert rposix.get_inheritable(fd3) == True
        fd4 = rposix.dup(fd1, False)
        assert rposix.get_inheritable(fd4) == False
        rposix.dup2(fd2, fd4, False)
        assert rposix.get_inheritable(fd4) == False
        rposix.dup2(fd2, fd3, True)
        assert rposix.get_inheritable(fd3) == True
        os.close(fd1)
        os.close(fd2)
        os.close(fd3)
        os.close(fd4)

示例#2

文件： test_rposix.py 项目： mozillazg/pypy

def test_dup_dup2_non_inheritable():
    for preset in [False, True]:
        fd1, fd2 = os.pipe()
        rposix.set_inheritable(fd1, preset)
        rposix.set_inheritable(fd2, preset)
        fd3 = rposix.dup(fd1, True)
        assert rposix.get_inheritable(fd3) == True
        fd4 = rposix.dup(fd1, False)
        assert rposix.get_inheritable(fd4) == False
        rposix.dup2(fd2, fd4, False)
        assert rposix.get_inheritable(fd4) == False
        rposix.dup2(fd2, fd3, True)
        assert rposix.get_inheritable(fd3) == True
        os.close(fd1)
        os.close(fd2)
        os.close(fd3)
        os.close(fd4)