"""Module to create ``Input`` space and its child spaces from input data.
This module contains a function :py:func:`build_input`,
which creates "Input" space and its subspaces by reading
input data into them from an Excel file.
.. figure:: /images/input_tree.png
:width: 50%
By default, :py:func:`build_input` reads data from *input.xlsm* in the
same folder as this module, and the structure of ``Input`` space is illustrated
by the diagram below.
.. figure:: /images/input_drawio.png
:width: 50%
Below are descriptions of Input spaces and its subspaces.
Input
The parent module of all other input spaces.
Some tables in *input.xlsm* are imported as cells directly under this space.
PolicyData
The sample policy data read from *PolicyData* tab in *input.xlsm*.
Records and fields of *PolicyData* represents policies and policy
attributes respectively.
Each record of *PolicyData* is accessible as a dynamic space under
``PolicyData`` space indexed by *Policy* column in the input table.
Each field of a record is accessible as a scalar cells in the dynamic
space corresponding to the record.
For example::
>>> model.Input.PolicyData[3].PolicyTerm()
gives the value of the policy term of the policy record 3.
MortalityTables
The sample mortality tables read from *Mortality* tab.
For Each mortality table, a dynamic space is created indexed
by *TableID*, and `MortalityTable` cells indexed
by ``Sex`` and ``Age`` is created in that space.
The script below will return the mortality rate of Male, Age 41
from the mortality table 3::
>>> model.Input.MortalityTables[3].MortalityTable('M', 41)
ProductSpec
The sample product spec table read from *ProductSpec* tab.
``ProductSpec`` dynamic subspaces holds parameters to specify products
as cells. The dynamic subspaces are indexed by ``Product``,
``PolType`` and ``Gen``, and
each of the subspace has scalar cells defined by the columns
of *ProductSpec* tab other than the index columns.
Empty cells in the index columns are imported as ``None``.
``Cells.match`` method treats ``None`` as the wildcard when
finding the closest matching indexes for the given arguments.
Assumption
The sample assumption table read from *Assumption* tab.
The ``Assumption`` space has dynamic subspaces indexed by ``Product``,
``PolType`` and ``Gen``, each of which has scalar cells defined by the
columns of *Assumption* tab other than the index columns.
Empty cells in the index columns are imported as ``None``.
``Cells.match`` method treats ``None`` as the wildcard when
finding the closest matching indexes for the given arguments.
AssumptionTables
The sample assumption table read from *AssumptionTables* tab.
The tab holds assumptions by policy duration, such as mortality factors
and lapse assumptions.
Each assumption in the table is imported as a cells in the
``AssumptionTables`` space.
Scenarios
The sample scenario table read from *Scenarios* tab.
TODO
"""
import sys
import os.path as path
import time
from textwrap import dedent
default_input = path.join(path.abspath(path.dirname(__file__)), 'input.xlsx')
class _PrintElapsedTime:
def __init__(self):
self.last_time = time.time()
def set_start(self, msg):
print(msg, end='', file=sys.stderr)
self.last_time = time.time()
def print_time(self, msg):
this_time = time.time()
print(msg, "({:.2f}secs)".format(this_time - self.last_time),
file=sys.stderr)
self.last_time = this_time
[docs]def build_input(model, input_file=default_input):
"""Create "Input" space and its sub spaces by reading data from an Excel
file into it.
This function creates a space named "Input" under ``model``,
reads tables from ``input_file`` into cells and subspaces
under the "Input" space.
By default, this function assumes reading data from *input.xlsm*
located in the same folder as this module.
Args:
model: Model object in which 'Input' space is created.
input_file(str): Path to the Excel input file.
"""
inp = model.new_space(name='Input')
inp.allow_none = True
print_time = True
print("Started loading data from '%s'." % input_file, file=sys.stderr)
if print_time:
timestamp = _PrintElapsedTime()
timestamp.set_start('Loading PolicyData...')
policydata = inp.new_space_from_excel(
book=input_file,
range_='B7:O307',
sheet='PolicyData',
name='PolicyData',
names_row=0,
param_cols=[0],
space_param_order=[0],
cells_param_order=[])
if print_time:
timestamp.print_time('Done.')
timestamp.set_start('Loading MortalityTables...')
mortbl = inp.new_space_from_excel(
book=input_file,
range_='E4:Q137',
sheet='Mortality',
name='MortalityTables',
names_row=0,
param_cols=[0],
names_col=0,
param_rows=[1, 2],
space_param_order=[1],
cells_param_order=[2, 0])
if print_time:
timestamp.print_time('Done.')
timestamp.set_start('Loading ProductSpec...')
inp.new_space_from_excel(
book=input_file,
range_='B7:V22',
sheet='ProductSpec',
name='ProductSpec',
names_row=0,
param_cols=[0, 1, 2],
cells_param_order=[0, 1, 2])
if print_time:
timestamp.print_time('Done.')
timestamp.set_start('Loading OtherParam1...')
inp.new_cells_from_excel(
book=input_file,
range_='C6:D9',
sheet='OtherParams',
names_row=0,
param_cols=[0],
param_order=[0])
if print_time:
timestamp.print_time('Done.')
timestamp.set_start('Loading OtherParams2...')
inp.new_cells_from_excel(
book=input_file,
range_='G6:H9',
sheet='OtherParams',
names_row=0,
param_cols=[0],
param_order=[0])
if print_time:
timestamp.print_time('Done.')
timestamp.set_start('Loading Assumption...')
inp.new_space_from_excel(
book=input_file,
range_='B7:T17',
sheet='Assumption',
name='Assumption',
names_row=0,
param_cols=[0, 1, 2],
cells_param_order=[0, 1, 2])
if print_time:
timestamp.print_time('Done.')
timestamp.set_start('Loading AssumptionTables...')
inp.new_space_from_excel(
book=input_file,
range_='B7:J27',
sheet='AssumptionTables',
name='AssumptionTables',
names_row=0,
param_cols=[0],
cells_param_order=[0])
if print_time:
timestamp.print_time('Done.')
timestamp.set_start('Loading Scenarios...')
scenarios = inp.new_space_from_excel(
book=input_file,
range_='A3:C1513',
sheet='Scenarios',
name='Scenarios',
names_row=0,
param_cols=[0, 1],
space_param_order=[0],
cells_param_order=[1])
if print_time:
timestamp.print_time('Done.')
print(dedent("""\
Input space and its sub spaces are saved in '[project name].mx'.
You can load input data from the saved file instead of 'input.xlsx'
by passing 'load_saved=True' to simplelife.build function."""),
file=sys.stderr)
return inp