Python numpy.ipmt() 使用实例

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Example 1

def test_broadcast(self):
        assert_almost_equal(np.nper(0.075, -2000, 0, 100000., [0, 1]),
                            [21.5449442, 20.76156441], 4)

        assert_almost_equal(np.ipmt(0.1/12, list(range(5)), 24, 2000),
                            [-17.29165168, -16.66666667, -16.03647345,
                                -15.40102862, -14.76028842], 4)

        assert_almost_equal(np.ppmt(0.1/12, list(range(5)), 24, 2000),
                            [-74.998201, -75.62318601, -76.25337923,
                                -76.88882405, -77.52956425], 4)

        assert_almost_equal(np.ppmt(0.1/12, list(range(5)), 24, 2000, 0,
                                    [0, 0, 1, 'end', 'begin']),
                            [-74.998201, -75.62318601, -75.62318601,
                                -76.88882405, -76.88882405], 4) 

Example 2

def test_broadcast(self):
        assert_almost_equal(np.nper(0.075, -2000, 0, 100000., [0, 1]),
                            [21.5449442, 20.76156441], 4)

        assert_almost_equal(np.ipmt(0.1/12, list(range(5)), 24, 2000),
                            [-17.29165168, -16.66666667, -16.03647345,
                                -15.40102862, -14.76028842], 4)

        assert_almost_equal(np.ppmt(0.1/12, list(range(5)), 24, 2000),
                            [-74.998201, -75.62318601, -76.25337923,
                                -76.88882405, -77.52956425], 4)

        assert_almost_equal(np.ppmt(0.1/12, list(range(5)), 24, 2000, 0,
                                    [0, 0, 1, 'end', 'begin']),
                            [-74.998201, -75.62318601, -75.62318601,
                                -76.88882405, -76.88882405], 4) 

Example 3

def test_broadcast(self):
        assert_almost_equal(np.nper(0.075, -2000, 0, 100000., [0, 1]),
                            [21.5449442, 20.76156441], 4)

        assert_almost_equal(np.ipmt(0.1/12, list(range(5)), 24, 2000),
                            [-17.29165168, -16.66666667, -16.03647345,
                                -15.40102862, -14.76028842], 4)

        assert_almost_equal(np.ppmt(0.1/12, list(range(5)), 24, 2000),
                            [-74.998201, -75.62318601, -76.25337923,
                                -76.88882405, -77.52956425], 4)

        assert_almost_equal(np.ppmt(0.1/12, list(range(5)), 24, 2000, 0,
                                    [0, 0, 1, 'end', 'begin']),
                            [-74.998201, -75.62318601, -75.62318601,
                                -76.88882405, -76.88882405], 4) 

Example 4

def test_broadcast(self):
        assert_almost_equal(np.nper(0.075, -2000, 0, 100000., [0, 1]),
                            [21.5449442, 20.76156441], 4)

        assert_almost_equal(np.ipmt(0.1/12, list(range(5)), 24, 2000),
                            [-17.29165168, -16.66666667, -16.03647345,
                                -15.40102862, -14.76028842], 4)

        assert_almost_equal(np.ppmt(0.1/12, list(range(5)), 24, 2000),
                            [-74.998201, -75.62318601, -76.25337923,
                                -76.88882405, -77.52956425], 4)

        assert_almost_equal(np.ppmt(0.1/12, list(range(5)), 24, 2000, 0,
                                    [0, 0, 1, 'end', 'begin']),
                            [-74.998201, -75.62318601, -75.62318601,
                                -76.88882405, -76.88882405], 4) 

Example 5

def test_broadcast(self):
        assert_almost_equal(np.nper(0.075, -2000, 0, 100000., [0, 1]),
                            [21.5449442, 20.76156441], 4)

        assert_almost_equal(np.ipmt(0.1/12, list(range(5)), 24, 2000),
                            [-17.29165168, -16.66666667, -16.03647345,
                                -15.40102862, -14.76028842], 4)

        assert_almost_equal(np.ppmt(0.1/12, list(range(5)), 24, 2000),
                            [-74.998201, -75.62318601, -76.25337923,
                                -76.88882405, -77.52956425], 4)

        assert_almost_equal(np.ppmt(0.1/12, list(range(5)), 24, 2000, 0,
                                    [0, 0, 1, 'end', 'begin']),
                            [-74.998201, -75.62318601, -75.62318601,
                                -76.88882405, -76.88882405], 4) 

Example 6

def test_broadcast(self):
        assert_almost_equal(np.nper(0.075, -2000, 0, 100000., [0, 1]),
                            [21.5449442, 20.76156441], 4)

        assert_almost_equal(np.ipmt(0.1/12, list(range(5)), 24, 2000),
                            [-17.29165168, -16.66666667, -16.03647345,
                                -15.40102862, -14.76028842], 4)

        assert_almost_equal(np.ppmt(0.1/12, list(range(5)), 24, 2000),
                            [-74.998201, -75.62318601, -76.25337923,
                                -76.88882405, -77.52956425], 4)

        assert_almost_equal(np.ppmt(0.1/12, list(range(5)), 24, 2000, 0,
                                    [0, 0, 1, 'end', 'begin']),
                            [-74.998201, -75.62318601, -75.62318601,
                                -76.88882405, -76.88882405], 4) 

Example 7

def test_ipmt(self):
        np.round(np.ipmt(0.1/12, 1, 24, 2000), 2) == 16.67 

Example 8

def _rbl(rate, per, pmt, pv, when):
    """
    This function is here to simply have a different name for the 'fv'
    function to not interfere with the 'fv' keyword argument within the 'ipmt'
    function.  It is the 'remaining balance on loan' which might be useful as
    it's own function, but is easily calculated with the 'fv' function.
    """
    return fv(rate, (per - 1), pmt, pv, when) 

Example 9

def ppmt(rate, per, nper, pv, fv=0.0, when='end'):
    """
    Compute the payment against loan principal.

    Parameters
    ----------
    rate : array_like
        Rate of interest (per period)
    per : array_like, int
        Amount paid against the loan changes.  The `per` is the period of
        interest.
    nper : array_like
        Number of compounding periods
    pv : array_like
        Present value
    fv : array_like, optional
        Future value
    when : {{'begin', 1}, {'end', 0}}, {string, int}
        When payments are due ('begin' (1) or 'end' (0))

    See Also
    --------
    pmt, pv, ipmt

    """
    total = pmt(rate, nper, pv, fv, when)
    return total - ipmt(rate, per, nper, pv, fv, when) 

Example 10

def test_ipmt(self):
        np.round(np.ipmt(0.1/12, 1, 24, 2000), 2) == 16.67 

Example 11

def _rbl(rate, per, pmt, pv, when):
    """
    This function is here to simply have a different name for the 'fv'
    function to not interfere with the 'fv' keyword argument within the 'ipmt'
    function.  It is the 'remaining balance on loan' which might be useful as
    it's own function, but is easily calculated with the 'fv' function.
    """
    return fv(rate, (per - 1), pmt, pv, when) 

Example 12

def ppmt(rate, per, nper, pv, fv=0.0, when='end'):
    """
    Compute the payment against loan principal.

    Parameters
    ----------
    rate : array_like
        Rate of interest (per period)
    per : array_like, int
        Amount paid against the loan changes.  The `per` is the period of
        interest.
    nper : array_like
        Number of compounding periods
    pv : array_like
        Present value
    fv : array_like, optional
        Future value
    when : {{'begin', 1}, {'end', 0}}, {string, int}
        When payments are due ('begin' (1) or 'end' (0))

    See Also
    --------
    pmt, pv, ipmt

    """
    total = pmt(rate, nper, pv, fv, when)
    return total - ipmt(rate, per, nper, pv, fv, when) 

Example 13

def test_ipmt(self):
        np.round(np.ipmt(0.1/12, 1, 24, 2000), 2) == 16.67 

Example 14

def _rbl(rate, per, pmt, pv, when):
    """
    This function is here to simply have a different name for the 'fv'
    function to not interfere with the 'fv' keyword argument within the 'ipmt'
    function.  It is the 'remaining balance on loan' which might be useful as
    it's own function, but is easily calculated with the 'fv' function.
    """
    return fv(rate, (per - 1), pmt, pv, when) 

Example 15

def ppmt(rate, per, nper, pv, fv=0.0, when='end'):
    """
    Compute the payment against loan principal.

    Parameters
    ----------
    rate : array_like
        Rate of interest (per period)
    per : array_like, int
        Amount paid against the loan changes.  The `per` is the period of
        interest.
    nper : array_like
        Number of compounding periods
    pv : array_like
        Present value
    fv : array_like, optional
        Future value
    when : {{'begin', 1}, {'end', 0}}, {string, int}
        When payments are due ('begin' (1) or 'end' (0))

    See Also
    --------
    pmt, pv, ipmt

    """
    total = pmt(rate, nper, pv, fv, when)
    return total - ipmt(rate, per, nper, pv, fv, when) 

Example 16

def test_ipmt(self):
        np.round(np.ipmt(0.1/12, 1, 24, 2000), 2) == 16.67 

Example 17

def _rbl(rate, per, pmt, pv, when):
    """
    This function is here to simply have a different name for the 'fv'
    function to not interfere with the 'fv' keyword argument within the 'ipmt'
    function.  It is the 'remaining balance on loan' which might be useful as
    it's own function, but is easily calculated with the 'fv' function.
    """
    return fv(rate, (per - 1), pmt, pv, when) 

Example 18

def ppmt(rate, per, nper, pv, fv=0.0, when='end'):
    """
    Compute the payment against loan principal.

    Parameters
    ----------
    rate : array_like
        Rate of interest (per period)
    per : array_like, int
        Amount paid against the loan changes.  The `per` is the period of
        interest.
    nper : array_like
        Number of compounding periods
    pv : array_like
        Present value
    fv : array_like, optional
        Future value
    when : {{'begin', 1}, {'end', 0}}, {string, int}
        When payments are due ('begin' (1) or 'end' (0))

    See Also
    --------
    pmt, pv, ipmt

    """
    total = pmt(rate, nper, pv, fv, when)
    return total - ipmt(rate, per, nper, pv, fv, when) 

Example 19

def test_ipmt(self):
        np.round(np.ipmt(0.1/12, 1, 24, 2000), 2) == 16.67 

Example 20

def _rbl(rate, per, pmt, pv, when):
    """
    This function is here to simply have a different name for the 'fv'
    function to not interfere with the 'fv' keyword argument within the 'ipmt'
    function.  It is the 'remaining balance on loan' which might be useful as
    it's own function, but is easily calculated with the 'fv' function.
    """
    return fv(rate, (per - 1), pmt, pv, when) 

Example 21

def ppmt(rate, per, nper, pv, fv=0.0, when='end'):
    """
    Compute the payment against loan principal.

    Parameters
    ----------
    rate : array_like
        Rate of interest (per period)
    per : array_like, int
        Amount paid against the loan changes.  The `per` is the period of
        interest.
    nper : array_like
        Number of compounding periods
    pv : array_like
        Present value
    fv : array_like, optional
        Future value
    when : {{'begin', 1}, {'end', 0}}, {string, int}
        When payments are due ('begin' (1) or 'end' (0))

    See Also
    --------
    pmt, pv, ipmt

    """
    total = pmt(rate, nper, pv, fv, when)
    return total - ipmt(rate, per, nper, pv, fv, when) 

Example 22

def test_ipmt(self):
        np.round(np.ipmt(0.1/12, 1, 24, 2000), 2) == 16.67 

Example 23

def _rbl(rate, per, pmt, pv, when):
    """
    This function is here to simply have a different name for the 'fv'
    function to not interfere with the 'fv' keyword argument within the 'ipmt'
    function.  It is the 'remaining balance on loan' which might be useful as
    it's own function, but is easily calculated with the 'fv' function.
    """
    return fv(rate, (per - 1), pmt, pv, when) 

Example 24

def ppmt(rate, per, nper, pv, fv=0.0, when='end'):
    """
    Compute the payment against loan principal.

    Parameters
    ----------
    rate : array_like
        Rate of interest (per period)
    per : array_like, int
        Amount paid against the loan changes.  The `per` is the period of
        interest.
    nper : array_like
        Number of compounding periods
    pv : array_like
        Present value
    fv : array_like, optional
        Future value
    when : {{'begin', 1}, {'end', 0}}, {string, int}
        When payments are due ('begin' (1) or 'end' (0))

    See Also
    --------
    pmt, pv, ipmt

    """
    total = pmt(rate, nper, pv, fv, when)
    return total - ipmt(rate, per, nper, pv, fv, when) 
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