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# -*- coding: utf-8 -*-
"""\
Here are a collection of examples of how this module can be used.
See the README or the natsort homepage for more details.
"""
from __future__ import unicode_literals, print_function
import pytest
import locale
from natsort.compat.py23 import PY_VERSION
from operator import itemgetter
from pytest import raises
from natsort import (
natsorted,
ns,
)
from compat.locale import (
load_locale,
has_locale_de_DE,
)
def test_natsorted_returns_strings_with_numbers_in_ascending_order():
a = ['a2', 'a5', 'a9', 'a1', 'a4', 'a10', 'a6']
assert natsorted(a) == ['a1', 'a2', 'a4', 'a5', 'a6', 'a9', 'a10']
def test_natsorted_returns_list_of_numbers_sorted_as_signed_floats_with_exponents():
a = ['a50', 'a51.', 'a50.31', 'a-50', 'a50.4', 'a5.034e1', 'a50.300']
assert natsorted(a, alg=ns.REAL) == ['a-50', 'a50', 'a50.300', 'a50.31', 'a5.034e1', 'a50.4', 'a51.']
def test_natsorted_returns_list_of_numbers_sorted_as_unsigned_floats_without_exponents_with_NOEXP_option():
a = ['a50', 'a51.', 'a50.31', 'a-50', 'a50.4', 'a5.034e1', 'a50.300']
assert natsorted(a, alg=ns.N | ns.F | ns.U) == ['a5.034e1', 'a50', 'a50.300', 'a50.31', 'a50.4', 'a51.', 'a-50']
# UNSIGNED is default
assert natsorted(a, alg=ns.NOEXP | ns.FLOAT) == ['a5.034e1', 'a50', 'a50.300', 'a50.31', 'a50.4', 'a51.', 'a-50']
def test_natsorted_returns_list_of_numbers_sorted_as_unsigned_ints_with_INT_option():
a = ['a50', 'a51.', 'a50.31', 'a-50', 'a50.4', 'a5.034e1', 'a50.300']
assert natsorted(a, alg=ns.INT) == ['a5.034e1', 'a50', 'a50.4', 'a50.31', 'a50.300', 'a51.', 'a-50']
# INT is default
assert natsorted(a) == ['a5.034e1', 'a50', 'a50.4', 'a50.31', 'a50.300', 'a51.', 'a-50']
def test_natsorted_returns_list_of_numbers_sorted_as_unsigned_ints_with_DIGIT_and_VERSION_option():
a = ['a50', 'a51.', 'a50.31', 'a-50', 'a50.4', 'a5.034e1', 'a50.300']
assert natsorted(a, alg=ns.DIGIT) == ['a5.034e1', 'a50', 'a50.4', 'a50.31', 'a50.300', 'a51.', 'a-50']
assert natsorted(a, alg=ns.VERSION) == ['a5.034e1', 'a50', 'a50.4', 'a50.31', 'a50.300', 'a51.', 'a-50']
def test_natsorted_returns_list_of_numbers_sorted_as_signed_ints_with_SIGNED_option():
a = ['a50', 'a51.', 'a50.31', 'a-50', 'a50.4', 'a5.034e1', 'a50.300']
assert natsorted(a, alg=ns.SIGNED) == ['a-50', 'a5.034e1', 'a50', 'a50.4', 'a50.31', 'a50.300', 'a51.']
def test_natsorted_returns_list_of_numbers_sorted_accounting_for_sign_with_SIGNED_option():
a = ['a-5', 'a7', 'a+2']
assert natsorted(a, alg=ns.SIGNED) == ['a-5', 'a+2', 'a7']
def test_natsorted_returns_list_of_numbers_sorted_not_accounting_for_sign_without_SIGNED_option():
a = ['a-5', 'a7', 'a+2']
assert natsorted(a) == ['a7', 'a+2', 'a-5']
def test_natsorted_returns_sorted_list_of_version_numbers_by_default_or_with_VERSION_option():
a = ['1.9.9a', '1.11', '1.9.9b', '1.11.4', '1.10.1']
assert natsorted(a) == ['1.9.9a', '1.9.9b', '1.10.1', '1.11', '1.11.4']
assert natsorted(a, alg=ns.VERSION) == ['1.9.9a', '1.9.9b', '1.10.1', '1.11', '1.11.4']
def test_natsorted_returns_sorted_list_with_mixed_type_input_and_does_not_raise_TypeError_on_Python3():
# You can mix types with natsorted. This can get around the new
# 'unorderable types' issue with Python 3.
a = [6, 4.5, '7', '2.5', 'a']
assert natsorted(a) == ['2.5', 4.5, 6, '7', 'a']
a = [46, '5a5b2', 'af5', '5a5-4']
assert natsorted(a) == ['5a5-4', '5a5b2', 46, 'af5']
def test_natsorted_with_mixed_input_returns_sorted_results_without_error():
a = ['0', 'Á', '2', 'Z']
assert natsorted(a) == ['0', '2', 'Á', 'Z']
assert natsorted(a, alg=ns.NUMAFTER) == ['Á', 'Z', '0', '2']
a = ['2', 'ä', 'b', 1.5, 3]
assert natsorted(a) == [1.5, '2', 3, 'ä', 'b']
assert natsorted(a, alg=ns.NUMAFTER) == ['ä', 'b', 1.5, '2', 3]
def test_natsorted_with_nan_input_returns_sorted_results_with_nan_last_with_NANLAST():
a = ['25', 5, float('nan'), 1E40]
# The slice is because NaN != NaN
assert natsorted(a, alg=ns.NANLAST)[:3] == [5, '25', 1E40, float('nan')][:3]
def test_natsorted_with_nan_input_returns_sorted_results_with_nan_first_without_NANLAST():
a = ['25', 5, float('nan'), 1E40]
# The slice is because NaN != NaN
assert natsorted(a)[1:] == [float('nan'), 5, '25', 1E40][1:]
def test_natsorted_with_mixed_input_raises_TypeError_if_bytes_type_is_involved_on_Python3():
if PY_VERSION >= 3:
with raises(TypeError) as e:
assert natsorted(['ä', b'b'])
assert 'bytes' in str(e.value)
else:
assert True
def test_natsorted_raises_ValueError_for_non_iterable_input():
with raises(TypeError) as err:
natsorted(100)
assert str(err.value) == "'int' object is not iterable"
def test_natsorted_recursivley_applies_key_to_nested_lists_to_return_sorted_nested_list():
data = [['a1', 'a5'], ['a1', 'a40'], ['a10', 'a1'], ['a2', 'a5']]
assert natsorted(data) == [['a1', 'a5'], ['a1', 'a40'], ['a2', 'a5'], ['a10', 'a1']]
def test_natsorted_applies_key_to_each_list_element_before_sorting_list():
b = [('a', 'num3'), ('b', 'num5'), ('c', 'num2')]
assert natsorted(b, key=itemgetter(1)) == [('c', 'num2'), ('a', 'num3'), ('b', 'num5')]
def test_natsorted_returns_list_in_reversed_order_with_reverse_option():
a = ['a50', 'a51.', 'a50.31', 'a50.4', 'a5.034e1', 'a50.300']
assert natsorted(a, reverse=True) == natsorted(a)[::-1]
def test_natsorted_sorts_OS_generated_paths_incorrectly_without_PATH_option():
a = ['/p/Folder (10)/file.tar.gz',
'/p/Folder/file.tar.gz',
'/p/Folder (1)/file (1).tar.gz',
'/p/Folder (1)/file.tar.gz']
assert natsorted(a) == ['/p/Folder (1)/file (1).tar.gz',
'/p/Folder (1)/file.tar.gz',
'/p/Folder (10)/file.tar.gz',
'/p/Folder/file.tar.gz']
def test_natsorted_sorts_OS_generated_paths_correctly_with_PATH_option():
a = ['/p/Folder (10)/file.tar.gz',
'/p/Folder/file.tar.gz',
'/p/Folder (1)/file (1).tar.gz',
'/p/Folder (1)/file.tar.gz']
assert natsorted(a, alg=ns.PATH) == ['/p/Folder/file.tar.gz',
'/p/Folder (1)/file.tar.gz',
'/p/Folder (1)/file (1).tar.gz',
'/p/Folder (10)/file.tar.gz']
def test_natsorted_can_handle_sorting_paths_and_numbers_with_PATH():
# You can sort paths and numbers, not that you'd want to
a = ['/Folder (9)/file.exe', 43]
assert natsorted(a, alg=ns.PATH) == [43, '/Folder (9)/file.exe']
def test_natsorted_returns_results_in_ASCII_order_with_no_case_options():
a = ['Apple', 'corn', 'Corn', 'Banana', 'apple', 'banana']
assert natsorted(a) == ['Apple', 'Banana', 'Corn', 'apple', 'banana', 'corn']
def test_natsorted_returns_results_sorted_by_lowercase_ASCII_order_with_IGNORECASE():
a = ['Apple', 'corn', 'Corn', 'Banana', 'apple', 'banana']
assert natsorted(a, alg=ns.IGNORECASE) == ['Apple', 'apple', 'Banana', 'banana', 'corn', 'Corn']
def test_natsorted_returns_results_in_ASCII_order_but_with_lowercase_letters_first_with_LOWERCASEFIRST():
a = ['Apple', 'corn', 'Corn', 'Banana', 'apple', 'banana']
assert natsorted(a, alg=ns.LOWERCASEFIRST) == ['apple', 'banana', 'corn', 'Apple', 'Banana', 'Corn']
def test_natsorted_returns_results_with_uppercase_and_lowercase_letters_grouped_together_with_GROUPLETTERS():
a = ['Apple', 'corn', 'Corn', 'Banana', 'apple', 'banana']
assert natsorted(a, alg=ns.GROUPLETTERS) == ['Apple', 'apple', 'Banana', 'banana', 'Corn', 'corn']
def test_natsorted_returns_results_in_natural_order_with_GROUPLETTERS_and_LOWERCASEFIRST():
a = ['Apple', 'corn', 'Corn', 'Banana', 'apple', 'banana']
assert natsorted(a, alg=ns.G | ns.LF) == ['apple', 'Apple', 'banana', 'Banana', 'corn', 'Corn']
def test_natsorted_places_uppercase_letters_before_lowercase_letters_for_nested_input():
b = [('A5', 'a6'), ('a3', 'a1')]
assert natsorted(b) == [('A5', 'a6'), ('a3', 'a1')]
def test_natsorted_with_LOWERCASEFIRST_places_lowercase_letters_before_uppercase_letters_for_nested_input():
b = [('A5', 'a6'), ('a3', 'a1')]
assert natsorted(b, alg=ns.LOWERCASEFIRST) == [('a3', 'a1'), ('A5', 'a6')]
def test_natsorted_with_IGNORECASE_sorts_without_regard_to_case_for_nested_input():
b = [('A5', 'a6'), ('a3', 'a1')]
assert natsorted(b, alg=ns.IGNORECASE) == [('a3', 'a1'), ('A5', 'a6')]
def test_natsorted_with_LOCALE_returns_results_sorted_by_lowercase_first_and_grouped_letters():
a = ['Apple', 'corn', 'Corn', 'Banana', 'apple', 'banana']
load_locale('en_US')
assert natsorted(a, alg=ns.LOCALE) == ['apple', 'Apple', 'banana', 'Banana', 'corn', 'Corn']
locale.setlocale(locale.LC_ALL, str(''))
def test_natsorted_with_LOCALE_and_CAPITALFIRST_returns_results_sorted_by_capital_first_and_ungrouped():
a = ['Apple', 'corn', 'Corn', 'Banana', 'apple', 'banana']
load_locale('en_US')
assert natsorted(a, alg=ns.LOCALE | ns.CAPITALFIRST) == ['Apple', 'Banana', 'Corn', 'apple', 'banana', 'corn']
locale.setlocale(locale.LC_ALL, str(''))
def test_natsorted_with_LOCALE_and_LOWERCASEFIRST_returns_results_sorted_by_uppercase_first_and_grouped_letters():
a = ['Apple', 'corn', 'Corn', 'Banana', 'apple', 'banana']
load_locale('en_US')
assert natsorted(a, alg=ns.LOCALE | ns.LOWERCASEFIRST) == ['Apple', 'apple', 'Banana', 'banana', 'Corn', 'corn']
locale.setlocale(locale.LC_ALL, str(''))
def test_natsorted_with_LOCALE_and_CAPITALFIRST_and_LOWERCASE_returns_results_sorted_by_capital_last_and_ungrouped():
a = ['Apple', 'corn', 'Corn', 'Banana', 'apple', 'banana']
load_locale('en_US')
assert natsorted(a, alg=ns.LOCALE | ns.CAPITALFIRST | ns.LOWERCASEFIRST) == ['apple', 'banana', 'corn', 'Apple', 'Banana', 'Corn']
locale.setlocale(locale.LC_ALL, str(''))
def test_natsorted_with_LOCALE_and_en_setting_returns_results_sorted_by_en_language():
load_locale('en_US')
a = ['c', 'a5,467.86', 'ä', 'b', 'a5367.86', 'a5,6', 'a5,50']
assert natsorted(a, alg=ns.LOCALE | ns.F) == ['a5,6', 'a5,50', 'a5367.86', 'a5,467.86', 'ä', 'b', 'c']
locale.setlocale(locale.LC_ALL, str(''))
@pytest.mark.skipif(not has_locale_de_DE, reason='requires de_DE locale and working locale')
def test_natsorted_with_LOCALE_and_de_setting_returns_results_sorted_by_de_language():
load_locale('de_DE')
a = ['c', 'a5.467,86', 'ä', 'b', 'a5367.86', 'a5,6', 'a5,50']
assert natsorted(a, alg=ns.LOCALE | ns.F) == ['a5,50', 'a5,6', 'a5367.86', 'a5.467,86', 'ä', 'b', 'c']
locale.setlocale(locale.LC_ALL, str(''))
def test_natsorted_with_LOCALE_and_mixed_input_returns_sorted_results_without_error():
load_locale('en_US')
a = ['0', 'Á', '2', 'Z']
assert natsorted(a, alg=ns.LOCALE) == ['0', '2', 'Á', 'Z']
assert natsorted(a, alg=ns.LOCALE | ns.NUMAFTER) == ['Á', 'Z', '0', '2']
a = ['2', 'ä', 'b', 1.5, 3]
assert natsorted(a, alg=ns.LOCALE) == [1.5, '2', 3, 'ä', 'b']
assert natsorted(a, alg=ns.LOCALE | ns.NUMAFTER) == ['ä', 'b', 1.5, '2', 3]
locale.setlocale(locale.LC_ALL, str(''))
def test_natsorted_with_LOCALE_and_UNGROUPLETTERS_and_mixed_input_returns_sorted_results_without_error():
load_locale('en_US')
a = ['0', 'Á', '2', 'Z']
assert natsorted(a, alg=ns.LOCALE | ns.UNGROUPLETTERS) == ['0', '2', 'Á', 'Z']
assert natsorted(a, alg=ns.LOCALE | ns.UNGROUPLETTERS | ns.NUMAFTER) == ['Á', 'Z', '0', '2']
a = ['2', 'ä', 'b', 1.5, 3]
assert natsorted(a, alg=ns.LOCALE | ns.UNGROUPLETTERS) == [1.5, '2', 3, 'ä', 'b']
assert natsorted(a, alg=ns.LOCALE | ns.UNGROUPLETTERS | ns.NUMAFTER) == ['ä', 'b', 1.5, '2', 3]
locale.setlocale(locale.LC_ALL, str(''))
def test_natsorted_with_PATH_and_LOCALE_and_UNGROUPLETTERS_and_mixed_input_returns_sorted_results_without_error():
load_locale('en_US')
a = ['0', 'Á', '2', 'Z']
assert natsorted(a, alg=ns.PATH | ns.LOCALE | ns.UNGROUPLETTERS) == ['0', '2', 'Á', 'Z']
assert natsorted(a, alg=ns.PATH | ns.LOCALE | ns.UNGROUPLETTERS | ns.NUMAFTER) == ['Á', 'Z', '0', '2']
a = ['2', 'ä', 'b', 1.5, 3]
assert natsorted(a, alg=ns.PATH | ns.LOCALE | ns.UNGROUPLETTERS) == [1.5, '2', 3, 'ä', 'b']
assert natsorted(a, alg=ns.PATH | ns.LOCALE | ns.UNGROUPLETTERS | ns.NUMAFTER) == ['ä', 'b', 1.5, '2', 3]
locale.setlocale(locale.LC_ALL, str(''))
def test_natsorted_sorts_an_odd_collection_of_string():
a = ['Corn', 'apple', 'Banana', '73', 'Apple', '5039', 'corn', '~~~~~~', 'banana']
assert natsorted(a) == ['73', '5039', 'Apple', 'Banana', 'Corn',
'apple', 'banana', 'corn', '~~~~~~']
assert natsorted(a, alg=ns.NUMAFTER) == ['Apple', 'Banana', 'Corn',
'apple', 'banana', 'corn', '~~~~~~', '73', '5039']
def test_natsorted_sorts_mixed_ascii_and_non_ascii_numbers():
a = ['1st street', '10th street', '2nd street', '2 street', '1 street', '1street',
'11 street', 'street 2', 'street 1', 'Street 11', '۲ street', '۱ street', '۱street',
'۱۲street', '۱۱ street', 'street ۲', 'street ۱', 'street ۱', 'street ۱۲', 'street ۱۱']
expected = ['1 street', '۱ street', '1st street', '1street', '۱street', '2 street', '۲ street',
'2nd street', '10th street', '11 street', '۱۱ street', '۱۲street', 'street 1',
'street ۱', 'street ۱', 'street 2', 'street ۲', 'Street 11', 'street ۱۱', 'street ۱۲']
assert natsorted(a, alg=ns.IGNORECASE) == expected
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