DataProperty 0.2.3

Python library for extract property from data.

DataProperty

Table of contents

• Summary

• Installation

• Usage

  • Extract property of data for each data from matrix

  • Extract property of data for each column from matrix

• Dependencies

  • Test dependencies

Summary

Python library for extract property from data.

Installation

pip install DataProperty

Usage

Extract property of data for each data from matrix

from dataproperty import PropertyExtractor, Typecode
import six

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])

data_matrix = [
    [1, 1.1, "aa",  1,   1],
    [2, 2.2, "bbb", 2.2, 2.2],
    [3, 3.33, "cccc", -3, "ccc"],
]
prop_matrix = PropertyExtractor.extract_data_property_matrix(data_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 matrix

from dataproperty import PropertyExtractor, Typecode
import six

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

header_list = ["int", "float", "str", "num", "mix"]
data_matrix = [
    [1, 1.1, "aa",  1,   1],
    [2, 2.2, "bbb", 2.2, 2.2],
    [3, 3.33, "cccc", -3, "ccc"],
]
col_prop_list = PropertyExtractor.extract_column_property_list(header_list, data_matrix)

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