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# -*- coding: utf-8 -*-
"""Test support of the various forms of tabular data."""
from __future__ import print_function
from __future__ import unicode_literals
from tabulate import tabulate
from common import assert_equal, assert_in, assert_raises
from nose.plugins.skip import SkipTest
def test_iterable_of_iterables():
"Input: an interable of iterables."
ii = iter(map(lambda x: iter(x), [range(5), range(5,0,-1)]))
expected = "\n".join(
['- - - - -',
'0 1 2 3 4',
'5 4 3 2 1',
'- - - - -'])
result = tabulate(ii)
assert_equal(expected, result)
def test_iterable_of_iterables_headers():
"Input: an interable of iterables with headers."
ii = iter(map(lambda x: iter(x), [range(5), range(5,0,-1)]))
expected = "\n".join(
[' a b c d e',
'--- --- --- --- ---',
' 0 1 2 3 4',
' 5 4 3 2 1'])
result = tabulate(ii, "abcde")
assert_equal(expected, result)
def test_iterable_of_iterables_firstrow():
"Input: an interable of iterables with the first row as headers"
ii = iter(map(lambda x: iter(x), ["abcde", range(5), range(5,0,-1)]))
expected = "\n".join(
[' a b c d e',
'--- --- --- --- ---',
' 0 1 2 3 4',
' 5 4 3 2 1'])
result = tabulate(ii, "firstrow")
assert_equal(expected, result)
def test_list_of_lists():
"Input: a list of lists with headers."
ll = [["a","one",1],["b","two",None]]
expected = "\n".join([
' string number',
'-- -------- --------',
'a one 1',
'b two'])
result = tabulate(ll, headers=["string","number"])
assert_equal(expected, result)
def test_list_of_lists_firstrow():
"Input: a list of lists with the first row as headers."
ll = [["string","number"],["a","one",1],["b","two",None]]
expected = "\n".join([
' string number',
'-- -------- --------',
'a one 1',
'b two'])
result = tabulate(ll, headers="firstrow")
assert_equal(expected, result)
def test_list_of_lists_keys():
"Input: a list of lists with column indices as headers."
ll = [["a","one",1],["b","two",None]]
expected = "\n".join([
'0 1 2',
'--- --- ---',
'a one 1',
'b two'])
result = tabulate(ll, headers="keys")
assert_equal(expected, result)
def test_dict_like():
"Input: a dict of iterables with keys as headers."
# columns should be padded with None, keys should be used as headers
dd = {"a": range(3), "b": range(101,105)}
# keys' order (hence columns' order) is not deterministic in Python 3
# => we have to consider both possible results as valid
expected1 = "\n".join([
' a b',
'--- ---',
' 0 101',
' 1 102',
' 2 103',
' 104'])
expected2 = "\n".join([
' b a',
'--- ---',
'101 0',
'102 1',
'103 2',
'104'])
result = tabulate(dd, "keys")
print("Keys' order: %s" % dd.keys())
assert_in(result, [expected1, expected2])
def test_numpy_2d():
"Input: a two-dimensional NumPy array with headers."
try:
import numpy
na = (numpy.arange(1,10, dtype=numpy.float32).reshape((3,3))**3)*0.5
expected = "\n".join([
' a b c',
'----- ----- -----',
' 0.5 4 13.5',
' 32 62.5 108',
'171.5 256 364.5'])
result = tabulate(na, ["a", "b", "c"])
assert_equal(expected, result)
except ImportError:
print("test_numpy_2d is skipped")
raise SkipTest() # this test is optional
def test_numpy_2d_firstrow():
"Input: a two-dimensional NumPy array with the first row as headers."
try:
import numpy
na = (numpy.arange(1,10, dtype=numpy.int32).reshape((3,3))**3)
expected = "\n".join([
' 1 8 27',
'--- --- ----',
' 64 125 216',
'343 512 729'])
result = tabulate(na, headers="firstrow")
assert_equal(expected, result)
except ImportError:
print("test_numpy_2d_firstrow is skipped")
raise SkipTest() # this test is optional
def test_numpy_2d_keys():
"Input: a two-dimensional NumPy array with column indices as headers."
try:
import numpy
na = (numpy.arange(1,10, dtype=numpy.float32).reshape((3,3))**3)*0.5
expected = "\n".join([
' 0 1 2',
'----- ----- -----',
' 0.5 4 13.5',
' 32 62.5 108',
'171.5 256 364.5'])
result = tabulate(na, headers="keys")
assert_equal(expected, result)
except ImportError:
print("test_numpy_2d_keys is skipped")
raise SkipTest() # this test is optional
def test_numpy_record_array():
"Input: a two-dimensional NumPy record array without header."
try:
import numpy
na = numpy.asarray([("Alice", 23, 169.5),
("Bob", 27, 175.0)],
dtype={"names":["name","age","height"],
"formats":["a32","uint8","float32"]})
expected = "\n".join([
"----- -- -----",
"Alice 23 169.5",
"Bob 27 175",
"----- -- -----" ])
result = tabulate(na)
assert_equal(expected, result)
except ImportError:
print("test_numpy_2d_keys is skipped")
raise SkipTest() # this test is optional
def test_numpy_record_array_keys():
"Input: a two-dimensional NumPy record array with column names as headers."
try:
import numpy
na = numpy.asarray([("Alice", 23, 169.5),
("Bob", 27, 175.0)],
dtype={"names":["name","age","height"],
"formats":["a32","uint8","float32"]})
expected = "\n".join([
"name age height",
"------ ----- --------",
"Alice 23 169.5",
"Bob 27 175" ])
result = tabulate(na, headers="keys")
assert_equal(expected, result)
except ImportError:
print("test_numpy_2d_keys is skipped")
raise SkipTest() # this test is optional
def test_numpy_record_array_headers():
"Input: a two-dimensional NumPy record array with user-supplied headers."
try:
import numpy
na = numpy.asarray([("Alice", 23, 169.5),
("Bob", 27, 175.0)],
dtype={"names":["name","age","height"],
"formats":["a32","uint8","float32"]})
expected = "\n".join([
"person years cm",
"-------- ------- -----",
"Alice 23 169.5",
"Bob 27 175" ])
result = tabulate(na, headers=["person", "years", "cm"])
assert_equal(expected, result)
except ImportError:
print("test_numpy_2d_keys is skipped")
raise SkipTest() # this test is optional
def test_pandas():
"Input: a Pandas DataFrame."
try:
import pandas
df = pandas.DataFrame([["one",1],["two",None]], index=["a","b"])
expected = "\n".join([
' string number',
'-- -------- --------',
'a one 1',
'b two nan'])
result = tabulate(df, headers=["string", "number"])
assert_equal(expected, result)
except ImportError:
print("test_pandas is skipped")
raise SkipTest() # this test is optional
def test_pandas_firstrow():
"Input: a Pandas DataFrame with the first row as headers."
try:
import pandas
df = pandas.DataFrame([["one",1],["two",None]],
columns=["string","number"],
index=["a","b"])
expected = "\n".join([
'a one 1.0',
'--- ----- -----',
'b two nan'])
result = tabulate(df, headers="firstrow")
assert_equal(expected, result)
except ImportError:
print("test_pandas_firstrow is skipped")
raise SkipTest() # this test is optional
def test_pandas_keys():
"Input: a Pandas DataFrame with keys as headers."
try:
import pandas
df = pandas.DataFrame([["one",1],["two",None]],
columns=["string","number"],
index=["a","b"])
expected = "\n".join(
[' string number',
'-- -------- --------',
'a one 1',
'b two nan'])
result = tabulate(df, headers="keys")
assert_equal(expected, result)
except ImportError:
print("test_pandas_keys is skipped")
raise SkipTest() # this test is optional
def test_list_of_namedtuples():
"Input: a list of named tuples with field names as headers."
from collections import namedtuple
NT = namedtuple("NT", ['foo', 'bar'])
lt = [NT(1,2), NT(3,4)]
expected = "\n".join([
'- -',
'1 2',
'3 4',
'- -'])
result = tabulate(lt)
assert_equal(expected, result)
def test_list_of_namedtuples_keys():
"Input: a list of named tuples with field names as headers."
from collections import namedtuple
NT = namedtuple("NT", ['foo', 'bar'])
lt = [NT(1,2), NT(3,4)]
expected = "\n".join([
' foo bar',
'----- -----',
' 1 2',
' 3 4'])
result = tabulate(lt, headers="keys")
assert_equal(expected, result)
def test_list_of_dicts():
"Input: a list of dictionaries."
lod = [{'foo' : 1, 'bar' : 2}, {'foo' : 3, 'bar' : 4}]
expected1 = "\n".join([
'- -',
'1 2',
'3 4',
'- -'])
expected2 = "\n".join([
'- -',
'2 1',
'4 3',
'- -'])
result = tabulate(lod)
assert_in(result, [expected1, expected2])
def test_list_of_dicts_keys():
"Input: a list of dictionaries, with keys as headers."
lod = [{'foo' : 1, 'bar' : 2}, {'foo' : 3, 'bar' : 4}]
expected1 = "\n".join([
' foo bar',
'----- -----',
' 1 2',
' 3 4'])
expected2 = "\n".join([
' bar foo',
'----- -----',
' 2 1',
' 4 3'])
result = tabulate(lod, headers="keys")
assert_in(result, [expected1, expected2])
def test_list_of_dicts_with_missing_keys():
"Input: a list of dictionaries, with missing keys."
lod = [{"foo": 1}, {"bar": 2}, {"foo":4, "baz": 3}]
expected = "\n".join([
' foo bar baz',
'----- ----- -----',
' 1',
' 2',
' 4 3'])
result = tabulate(lod, headers="keys")
assert_equal(expected, result)
def test_list_of_dicts_firstrow():
"Input: a list of dictionaries, with the first dict as headers."
lod = [{'foo' : "FOO", 'bar' : "BAR"}, {'foo' : 3, 'bar': 4, 'baz': 5}]
# if some key is missing in the first dict, use the key name instead
expected1 = "\n".join([
' FOO BAR baz',
'----- ----- -----',
' 3 4 5'])
expected2 = "\n".join([
' BAR FOO baz',
'----- ----- -----',
' 4 3 5'])
result = tabulate(lod, headers="firstrow")
assert_in(result, [expected1, expected2])
def test_list_of_dicts_with_dict_of_headers():
"Input: a dict of user headers for a list of dicts (issue #23)"
table = [{"letters": "ABCDE", "digits": 12345}]
headers = {"digits": "DIGITS", "letters": "LETTERS"}
expected1 = "\n".join([
' DIGITS LETTERS',
'-------- ---------',
' 12345 ABCDE'])
expected2 = "\n".join([
'LETTERS DIGITS',
'--------- --------',
'ABCDE 12345'])
result = tabulate(table, headers=headers)
assert_in(result, [expected1, expected2])
def test_list_of_dicts_with_list_of_headers():
"Input: a list of headers for a list of dicts, raise ValueError (issue #23)"
table = [{"letters": "ABCDE", "digits": 12345}]
headers = ["DIGITS", "LETTERS"]
with assert_raises(ValueError):
tabulate(table, headers=headers)
def test_py27orlater_list_of_ordereddicts():
"Input: a list of OrderedDicts."
from collections import OrderedDict
od = OrderedDict([('b', 1), ('a', 2)])
lod = [od, od]
expected = "\n".join([
' b a',
'--- ---',
' 1 2',
' 1 2'])
result = tabulate(lod, headers="keys")
assert_equal(expected, result)
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