DataProperty 0.2.1

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

data_matrix = [
    [1, 1.1, "aaa", 1,   1],
    [2, 2.2, "bbb", 2.2, 2.2],
    [3, 3.3, "ccc", 3,   "ccc"],
]
prop_matrix = PropertyExtractor.extract_data_property_matrix(data_matrix)

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

print "---------- str_len ----------"
for prop_list in prop_matrix:
    print [prop.str_len for prop in prop_list]

print "---------- integer_digits ----------"
for prop_list in prop_matrix:
    print [prop.integer_digits for prop in prop_list]

print "---------- decimal_places ----------"
for prop_list in prop_matrix:
    print [prop.decimal_places for prop in prop_list]

---------- typename ----------
['INT', 'FLOAT', 'STRING', 'INT', 'INT']
['INT', 'FLOAT', 'STRING', 'FLOAT', 'FLOAT']
['INT', 'FLOAT', 'STRING', 'INT', 'STRING']
---------- str_len ----------
[1, 3, 3, 1, 1]
[1, 3, 3, 3, 3]
[1, 3, 3, 1, 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, 1, nan, 0, nan]

Extract property of data for each column from matrix

from dataproperty import PropertyExtractor, Typecode

header_list = ["int", "float", "str", "num", "mix"]
data_matrix = [
    [1, 1.1, "aaa", 1,   1],
    [2, 2.2, "bbb", 2.2, 2.2],
    [3, 3.3, "ccc", 3,   "ccc"],
]
col_prop_list = PropertyExtractor.extract_column_property_list(header_list, data_matrix)

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

print "---------- padding_len ----------"
print [prop.padding_len for prop in col_prop_list]

print "---------- decimal_places ----------"
print [prop.decimal_places for prop in col_prop_list]

---------- typename ----------
['INT', 'FLOAT', 'STRING', 'FLOAT', 'STRING']
---------- padding_len ----------
[3, 5, 3, 3, 3]
---------- decimal_places ----------
[nan, 1, nan, 1, 1]

Dependencies

Python 2.5+ or 3.3+

• six

Test dependencies

• pytest

• pytest-runner

• tox