# Python numpy.npv() Examples

The following are 30 code examples for showing how to use numpy.npv(). These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.

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Example 1
 Project: recruit   Author: Frank-qlu   File: test_financial.py    License: Apache License 2.0 5 votes  ```def test_npv(self):
assert_almost_equal(
np.npv(0.05, [-15000, 1500, 2500, 3500, 4500, 6000]),
122.89, 2) ```
Example 2
 Project: recruit   Author: Frank-qlu   File: test_financial.py    License: Apache License 2.0 5 votes  ```def test_npv_decimal(self):
assert_equal(
np.npv(Decimal('0.05'), [-15000, 1500, 2500, 3500, 4500, 6000]),
Decimal('122.894854950942692161628715')) ```
Example 3
 Project: recruit   Author: Frank-qlu   File: financial.py    License: Apache License 2.0 5 votes  ```def mirr(values, finance_rate, reinvest_rate):
"""
Modified internal rate of return.

Parameters
----------
values : array_like
Cash flows (must contain at least one positive and one negative
value) or nan is returned.  The first value is considered a sunk
cost at time zero.
finance_rate : scalar
Interest rate paid on the cash flows
reinvest_rate : scalar
Interest rate received on the cash flows upon reinvestment

Returns
-------
out : float
Modified internal rate of return

"""
values = np.asarray(values)
n = values.size

# Without this explicit cast the 1/(n - 1) computation below
# becomes a float, which causes TypeError when using Decimal
# values.
if isinstance(finance_rate, Decimal):
n = Decimal(n)

pos = values > 0
neg = values < 0
if not (pos.any() and neg.any()):
return np.nan
numer = np.abs(npv(reinvest_rate, values*pos))
denom = np.abs(npv(finance_rate, values*neg))
return (numer/denom)**(1/(n - 1))*(1 + reinvest_rate) - 1 ```
Example 4
 Project: lambda-packs   Author: ryfeus   File: financial.py    License: MIT License 5 votes  ```def mirr(values, finance_rate, reinvest_rate):
"""
Modified internal rate of return.

Parameters
----------
values : array_like
Cash flows (must contain at least one positive and one negative
value) or nan is returned.  The first value is considered a sunk
cost at time zero.
finance_rate : scalar
Interest rate paid on the cash flows
reinvest_rate : scalar
Interest rate received on the cash flows upon reinvestment

Returns
-------
out : float
Modified internal rate of return

"""
values = np.asarray(values)
n = values.size

# Without this explicit cast the 1/(n - 1) computation below
# becomes a float, which causes TypeError when using Decimal
# values.
if isinstance(finance_rate, Decimal):
n = Decimal(n)

pos = values > 0
neg = values < 0
if not (pos.any() and neg.any()):
return np.nan
numer = np.abs(npv(reinvest_rate, values*pos))
denom = np.abs(npv(finance_rate, values*neg))
return (numer/denom)**(1/(n - 1))*(1 + reinvest_rate) - 1 ```
Example 5
 Project: lambda-packs   Author: ryfeus   File: test_financial.py    License: MIT License 5 votes  ```def test_npv(self):
assert_almost_equal(
np.npv(0.05, [-15000, 1500, 2500, 3500, 4500, 6000]),
122.89, 2) ```
Example 6
 Project: lambda-packs   Author: ryfeus   File: financial.py    License: MIT License 5 votes  ```def mirr(values, finance_rate, reinvest_rate):
"""
Modified internal rate of return.

Parameters
----------
values : array_like
Cash flows (must contain at least one positive and one negative
value) or nan is returned.  The first value is considered a sunk
cost at time zero.
finance_rate : scalar
Interest rate paid on the cash flows
reinvest_rate : scalar
Interest rate received on the cash flows upon reinvestment

Returns
-------
out : float
Modified internal rate of return

"""
values = np.asarray(values, dtype=np.double)
n = values.size
pos = values > 0
neg = values < 0
if not (pos.any() and neg.any()):
return np.nan
numer = np.abs(npv(reinvest_rate, values*pos))
denom = np.abs(npv(finance_rate, values*neg))
return (numer/denom)**(1.0/(n - 1))*(1 + reinvest_rate) - 1 ```
Example 7
 Project: auto-alt-text-lambda-api   Author: abhisuri97   File: test_financial.py    License: MIT License 5 votes  ```def test_npv(self):
assert_almost_equal(
np.npv(0.05, [-15000, 1500, 2500, 3500, 4500, 6000]),
122.89, 2) ```
Example 8
 Project: auto-alt-text-lambda-api   Author: abhisuri97   File: financial.py    License: MIT License 5 votes  ```def mirr(values, finance_rate, reinvest_rate):
"""
Modified internal rate of return.

Parameters
----------
values : array_like
Cash flows (must contain at least one positive and one negative
value) or nan is returned.  The first value is considered a sunk
cost at time zero.
finance_rate : scalar
Interest rate paid on the cash flows
reinvest_rate : scalar
Interest rate received on the cash flows upon reinvestment

Returns
-------
out : float
Modified internal rate of return

"""
values = np.asarray(values, dtype=np.double)
n = values.size
pos = values > 0
neg = values < 0
if not (pos.any() and neg.any()):
return np.nan
numer = np.abs(npv(reinvest_rate, values*pos))
denom = np.abs(npv(finance_rate, values*neg))
return (numer/denom)**(1.0/(n - 1))*(1 + reinvest_rate) - 1 ```
Example 9
 Project: vnpy_crypto   Author: birforce   File: test_financial.py    License: MIT License 5 votes  ```def test_npv(self):
assert_almost_equal(
np.npv(0.05, [-15000, 1500, 2500, 3500, 4500, 6000]),
122.89, 2) ```
Example 10
 Project: vnpy_crypto   Author: birforce   File: test_financial.py    License: MIT License 5 votes  ```def test_npv_decimal(self):
assert_equal(
np.npv(Decimal('0.05'), [-15000, 1500, 2500, 3500, 4500, 6000]),
Decimal('122.894854950942692161628715')) ```
Example 11
 Project: vnpy_crypto   Author: birforce   File: financial.py    License: MIT License 5 votes  ```def mirr(values, finance_rate, reinvest_rate):
"""
Modified internal rate of return.

Parameters
----------
values : array_like
Cash flows (must contain at least one positive and one negative
value) or nan is returned.  The first value is considered a sunk
cost at time zero.
finance_rate : scalar
Interest rate paid on the cash flows
reinvest_rate : scalar
Interest rate received on the cash flows upon reinvestment

Returns
-------
out : float
Modified internal rate of return

"""
values = np.asarray(values)
n = values.size

# Without this explicit cast the 1/(n - 1) computation below
# becomes a float, which causes TypeError when using Decimal
# values.
if isinstance(finance_rate, Decimal):
n = Decimal(n)

pos = values > 0
neg = values < 0
if not (pos.any() and neg.any()):
return np.nan
numer = np.abs(npv(reinvest_rate, values*pos))
denom = np.abs(npv(finance_rate, values*neg))
return (numer/denom)**(1/(n - 1))*(1 + reinvest_rate) - 1 ```
Example 12
 Project: Computable   Author: ktraunmueller   File: test_financial.py    License: MIT License 5 votes  ```def test_npv(self):
assert_almost_equal(np.npv(0.05, [-15000, 1500, 2500, 3500, 4500, 6000]),
122.89, 2) ```
Example 13
 Project: Computable   Author: ktraunmueller   File: financial.py    License: MIT License 5 votes  ```def mirr(values, finance_rate, reinvest_rate):
"""
Modified internal rate of return.

Parameters
----------
values : array_like
Cash flows (must contain at least one positive and one negative value)
or nan is returned.  The first value is considered a sunk cost at time zero.
finance_rate : scalar
Interest rate paid on the cash flows
reinvest_rate : scalar
Interest rate received on the cash flows upon reinvestment

Returns
-------
out : float
Modified internal rate of return

"""

values = np.asarray(values, dtype=np.double)
n = values.size
pos = values > 0
neg = values < 0
if not (pos.any() and neg.any()):
return np.nan
numer = np.abs(npv(reinvest_rate, values*pos))
denom = np.abs(npv(finance_rate, values*neg))
return (numer/denom)**(1.0/(n - 1))*(1 + reinvest_rate) - 1 ```
Example 14
 Project: Mastering-Elasticsearch-7.0   Author: PacktPublishing   File: test_financial.py    License: MIT License 5 votes  ```def test_npv(self):
assert_almost_equal(
np.npv(0.05, [-15000, 1500, 2500, 3500, 4500, 6000]),
122.89, 2) ```
Example 15
 Project: Mastering-Elasticsearch-7.0   Author: PacktPublishing   File: test_financial.py    License: MIT License 5 votes  ```def test_npv_decimal(self):
assert_equal(
np.npv(Decimal('0.05'), [-15000, 1500, 2500, 3500, 4500, 6000]),
Decimal('122.894854950942692161628715')) ```
Example 16
 Project: Mastering-Elasticsearch-7.0   Author: PacktPublishing   File: financial.py    License: MIT License 5 votes  ```def mirr(values, finance_rate, reinvest_rate):
"""
Modified internal rate of return.

Parameters
----------
values : array_like
Cash flows (must contain at least one positive and one negative
value) or nan is returned.  The first value is considered a sunk
cost at time zero.
finance_rate : scalar
Interest rate paid on the cash flows
reinvest_rate : scalar
Interest rate received on the cash flows upon reinvestment

Returns
-------
out : float
Modified internal rate of return

"""
values = np.asarray(values)
n = values.size

# Without this explicit cast the 1/(n - 1) computation below
# becomes a float, which causes TypeError when using Decimal
# values.
if isinstance(finance_rate, Decimal):
n = Decimal(n)

pos = values > 0
neg = values < 0
if not (pos.any() and neg.any()):
return np.nan
numer = np.abs(npv(reinvest_rate, values*pos))
denom = np.abs(npv(finance_rate, values*neg))
return (numer/denom)**(1/(n - 1))*(1 + reinvest_rate) - 1 ```
Example 17
 Project: GraphicDesignPatternByPython   Author: Relph1119   File: test_financial.py    License: MIT License 5 votes  ```def test_npv(self):
assert_almost_equal(
np.npv(0.05, [-15000, 1500, 2500, 3500, 4500, 6000]),
122.89, 2) ```
Example 18
 Project: GraphicDesignPatternByPython   Author: Relph1119   File: test_financial.py    License: MIT License 5 votes  ```def test_npv_decimal(self):
assert_equal(
np.npv(Decimal('0.05'), [-15000, 1500, 2500, 3500, 4500, 6000]),
Decimal('122.894854950942692161628715')) ```
Example 19
 Project: GraphicDesignPatternByPython   Author: Relph1119   File: financial.py    License: MIT License 5 votes  ```def mirr(values, finance_rate, reinvest_rate):
"""
Modified internal rate of return.

Parameters
----------
values : array_like
Cash flows (must contain at least one positive and one negative
value) or nan is returned.  The first value is considered a sunk
cost at time zero.
finance_rate : scalar
Interest rate paid on the cash flows
reinvest_rate : scalar
Interest rate received on the cash flows upon reinvestment

Returns
-------
out : float
Modified internal rate of return

"""
values = np.asarray(values)
n = values.size

# Without this explicit cast the 1/(n - 1) computation below
# becomes a float, which causes TypeError when using Decimal
# values.
if isinstance(finance_rate, Decimal):
n = Decimal(n)

pos = values > 0
neg = values < 0
if not (pos.any() and neg.any()):
return np.nan
numer = np.abs(npv(reinvest_rate, values*pos))
denom = np.abs(npv(finance_rate, values*neg))
return (numer/denom)**(1/(n - 1))*(1 + reinvest_rate) - 1 ```
Example 20
 Project: CityEnergyAnalyst   Author: architecture-building-systems   File: equations.py    License: MIT License 5 votes  ```def calc_opex_annualized(OpC_USDyr, Inv_IR_perc, Inv_LT_yr):
Inv_IR = Inv_IR_perc / 100
opex_list = [0.0]
opex_list.extend(Inv_LT_yr * [OpC_USDyr])
opexnpv = np.npv(Inv_IR, opex_list)
EAC = ((opexnpv * Inv_IR) / (1 - (1 + Inv_IR) ** (-Inv_LT_yr)))  # calculate positive EAC
return EAC ```
Example 21
 Project: predictive-maintenance-using-machine-learning   Author: awslabs   File: test_financial.py    License: Apache License 2.0 5 votes  ```def test_npv(self):
assert_almost_equal(
np.npv(0.05, [-15000, 1500, 2500, 3500, 4500, 6000]),
122.89, 2) ```
Example 22
 Project: predictive-maintenance-using-machine-learning   Author: awslabs   File: test_financial.py    License: Apache License 2.0 5 votes  ```def test_npv_decimal(self):
assert_equal(
np.npv(Decimal('0.05'), [-15000, 1500, 2500, 3500, 4500, 6000]),
Decimal('122.894854950942692161628715')) ```
Example 23
 Project: predictive-maintenance-using-machine-learning   Author: awslabs   File: financial.py    License: Apache License 2.0 5 votes  ```def mirr(values, finance_rate, reinvest_rate):
"""
Modified internal rate of return.

Parameters
----------
values : array_like
Cash flows (must contain at least one positive and one negative
value) or nan is returned.  The first value is considered a sunk
cost at time zero.
finance_rate : scalar
Interest rate paid on the cash flows
reinvest_rate : scalar
Interest rate received on the cash flows upon reinvestment

Returns
-------
out : float
Modified internal rate of return

"""
values = np.asarray(values)
n = values.size

# Without this explicit cast the 1/(n - 1) computation below
# becomes a float, which causes TypeError when using Decimal
# values.
if isinstance(finance_rate, Decimal):
n = Decimal(n)

pos = values > 0
neg = values < 0
if not (pos.any() and neg.any()):
return np.nan
numer = np.abs(npv(reinvest_rate, values*pos))
denom = np.abs(npv(finance_rate, values*neg))
return (numer/denom)**(1/(n - 1))*(1 + reinvest_rate) - 1 ```
Example 24
 Project: Fluid-Designer   Author: Microvellum   File: financial.py    License: GNU General Public License v3.0 5 votes  ```def mirr(values, finance_rate, reinvest_rate):
"""
Modified internal rate of return.

Parameters
----------
values : array_like
Cash flows (must contain at least one positive and one negative
value) or nan is returned.  The first value is considered a sunk
cost at time zero.
finance_rate : scalar
Interest rate paid on the cash flows
reinvest_rate : scalar
Interest rate received on the cash flows upon reinvestment

Returns
-------
out : float
Modified internal rate of return

"""
values = np.asarray(values, dtype=np.double)
n = values.size
pos = values > 0
neg = values < 0
if not (pos.any() and neg.any()):
return np.nan
numer = np.abs(npv(reinvest_rate, values*pos))
denom = np.abs(npv(finance_rate, values*neg))
return (numer/denom)**(1.0/(n - 1))*(1 + reinvest_rate) - 1 ```
Example 25
 Project: pySINDy   Author: luckystarufo   File: test_financial.py    License: MIT License 5 votes  ```def test_npv(self):
assert_almost_equal(
np.npv(0.05, [-15000, 1500, 2500, 3500, 4500, 6000]),
122.89, 2) ```
Example 26
 Project: pySINDy   Author: luckystarufo   File: test_financial.py    License: MIT License 5 votes  ```def test_npv_decimal(self):
assert_equal(
np.npv(Decimal('0.05'), [-15000, 1500, 2500, 3500, 4500, 6000]),
Decimal('122.894854950942692161628715')) ```
Example 27
 Project: pySINDy   Author: luckystarufo   File: financial.py    License: MIT License 5 votes  ```def mirr(values, finance_rate, reinvest_rate):
"""
Modified internal rate of return.

Parameters
----------
values : array_like
Cash flows (must contain at least one positive and one negative
value) or nan is returned.  The first value is considered a sunk
cost at time zero.
finance_rate : scalar
Interest rate paid on the cash flows
reinvest_rate : scalar
Interest rate received on the cash flows upon reinvestment

Returns
-------
out : float
Modified internal rate of return

"""
values = np.asarray(values)
n = values.size

# Without this explicit cast the 1/(n - 1) computation below
# becomes a float, which causes TypeError when using Decimal
# values.
if isinstance(finance_rate, Decimal):
n = Decimal(n)

pos = values > 0
neg = values < 0
if not (pos.any() and neg.any()):
return np.nan
numer = np.abs(npv(reinvest_rate, values*pos))
denom = np.abs(npv(finance_rate, values*neg))
return (numer/denom)**(1/(n - 1))*(1 + reinvest_rate) - 1 ```
Example 28
 Project: mxnet-lambda   Author: awslabs   File: test_financial.py    License: Apache License 2.0 5 votes  ```def test_npv(self):
assert_almost_equal(
np.npv(0.05, [-15000, 1500, 2500, 3500, 4500, 6000]),
122.89, 2) ```
Example 29
 Project: mxnet-lambda   Author: awslabs   File: financial.py    License: Apache License 2.0 5 votes  ```def mirr(values, finance_rate, reinvest_rate):
"""
Modified internal rate of return.

Parameters
----------
values : array_like
Cash flows (must contain at least one positive and one negative
value) or nan is returned.  The first value is considered a sunk
cost at time zero.
finance_rate : scalar
Interest rate paid on the cash flows
reinvest_rate : scalar
Interest rate received on the cash flows upon reinvestment

Returns
-------
out : float
Modified internal rate of return

"""
values = np.asarray(values, dtype=np.double)
n = values.size
pos = values > 0
neg = values < 0
if not (pos.any() and neg.any()):
return np.nan
numer = np.abs(npv(reinvest_rate, values*pos))
denom = np.abs(npv(finance_rate, values*neg))
return (numer/denom)**(1.0/(n - 1))*(1 + reinvest_rate) - 1 ```
Example 30
 Project: ImageFusion   Author: pfchai   File: test_financial.py    License: MIT License 5 votes  ```def test_npv(self):
assert_almost_equal(
np.npv(0.05, [-15000, 1500, 2500, 3500, 4500, 6000]),
122.89, 2) ```