DataProperty 0.3.1

Python library for extract property from data.

DataProperty

Table of contents

• Summary

• Installation

• Usage

  • Extract property of data

    • e.g. float

    • e.g. int

    • e.g. string

  • Extract property of data for each data from a matrix

  • Extract property of data for each column from a matrix

• Dependencies

  • Test dependencies

Summary

Python library for extract property from data.

Installation

pip install DataProperty

Usage

Extract property of data

e.g. float

from dataproperty import DataProperty
DataProperty(-1.0)

data=-1.0, typename=FLOAT, align=right, str_len=4, integer_digits=1, decimal_places=1, additional_format_len=1

e.g. int

from dataproperty import DataProperty
DataProperty(123456789)

data=123456789, typename=INT, align=right, str_len=9, integer_digits=9, decimal_places=0, additional_format_len=0

e.g. string

from dataproperty import DataProperty
DataProperty("abcdefgh")

data=abcdefgh, typename=STRING, align=left, str_len=8, integer_digits=nan, decimal_places=nan, additional_format_len=0

Extract property of data for each data from a matrix

from dataproperty import PropertyExtractor, Typecode
import six

data_matrix = [
    [1, 1.1, "aa",  1,   1],
    [2, 2.2, "bbb", 2.2, 2.2],
    [3, 3.33, "cccc", -3, "ccc"],
]
prop_extractor = PropertyExtractor()

def display(prop_matrix, name):
    six.print_()
    six.print_("---------- %s ----------" % (name))
    for prop_list in prop_matrix:
        six.print_([getattr(prop, name) for prop in prop_list])

prop_extractor.data_matrix = data_matrix
prop_matrix = prop_extractor.extract_data_property_matrix()

six.print_("---------- typename ----------")
for prop_list in prop_matrix:
    six.print_([Typecode.get_typename(prop.typecode) for prop in prop_list])

display(prop_matrix, "data")
display(prop_matrix, "align")
display(prop_matrix, "str_len")
display(prop_matrix, "integer_digits")
display(prop_matrix, "decimal_places")

---------- typename ----------
['INT', 'FLOAT', 'STRING', 'INT', 'INT']
['INT', 'FLOAT', 'STRING', 'FLOAT', 'FLOAT']
['INT', 'FLOAT', 'STRING', 'INT', 'STRING']

---------- data ----------
[1, 1.1, 'aa', 1, 1]
[2, 2.2, 'bbb', 2.2, 2.2]
[3, 3.33, 'cccc', -3, 'ccc']

---------- align ----------
[right, right, left, right, right]
[right, right, left, right, right]
[right, right, left, right, left]

---------- str_len ----------
[1, 3, 2, 1, 1]
[1, 3, 3, 3, 3]
[1, 4, 4, 2, 3]

---------- integer_digits ----------
[1, 1, nan, 1, 1]
[1, 1, nan, 1, 1]
[1, 1, nan, 1, nan]

---------- decimal_places ----------
[0, 1, nan, 0, 0]
[0, 1, nan, 1, 1]
[0, 2, nan, 0, nan]

Extract property of data for each column from a matrix

from dataproperty import PropertyExtractor, Typecode
import six

data_matrix = [
    [1, 1.1, "aa",  1,   1],
    [2, 2.2, "bbb", 2.2, 2.2],
    [3, 3.33, "cccc", -3, "ccc"],
]
prop_extractor = PropertyExtractor()

def display(prop_list, name):
    six.print_()
    six.print_("---------- %s ----------" % (name))
    six.print_([getattr(prop, name) for prop in prop_list])

prop_extractor.header_list = ["int", "float", "str", "num", "mix"]
prop_extractor.data_matrix = data_matrix
col_prop_list = prop_extractor.extract_column_property_list()

six.print_("---------- typename ----------")
six.print_([Typecode.get_typename(prop.typecode) for prop in col_prop_list])

display(col_prop_list, "align")
display(col_prop_list, "padding_len")
display(col_prop_list, "decimal_places")

---------- typename ----------
['INT', 'FLOAT', 'STRING', 'FLOAT', 'STRING']

---------- align ----------
[right, right, left, right, left]

---------- padding_len ----------
[3, 5, 4, 3, 3]

---------- decimal_places ----------
[nan, 2, nan, 1, 1]

Dependencies

Python 2.6+ or 3.3+

• six

Test dependencies

• pytest

• pytest-runner

• tox