code: def whas500_true_x():
      return np.array(
          [
              1,
              2,
              3,
              4,
              5,
              6,
              7,
              10,
              11,
              14,
              16,
              17,
              18,
              19,
              20,
              22,
              26,
              31,
              32,
              33,
              34,
              37,
              42,
              46,
              49,
              52,
              53,
              55,
              57,
              60,
              61,
              62,
              64,
              69,
              76,
              81,
              83,
              88,
              91,
              93,
              95,
              97,
              100,
              101,
              108,
              109,
              113,
              116,
              117,
              118,
              129,
              132,
              134,
              135,
              137,
              140,
              143,
              145,
              146,
              151,
              166,
              169,
              187,
              192,
              197,
              200,
              226,
              233,
              235,
              259,
              269,
              274,
              287,
              289,
              295,
              297,
              312,
              313,
              321,
              328,
              343,
              345,
              354,
              358,
              359,
              363,
              368,
              371,
              373,
              376,
              382,
              385,
              386,
              390,
              392,
              397,
              398,
              399,
              400,
              403,
              405,
              406,
              407,
              408,
              411,
              412,
              416,
              418,
              419,
              421,
              422,
              424,
              426,
              427,
              433,
              437,
              440,
              442,
              445,
              446,
              449,
              450,
              451,
              452,
              457,
              458,
              459,
              465,
              466,
              467,
              473,
              475,
              478,
              479,
              480,
              486,
              497,
              506,
              507,
              510,
              511,
              516,
              519,
              521,
              522,
              523,
              524,
              529,
              530,
              532,
              535,
              537,
              542,
              544,
              550,
              551,
              552,
              554,
              559,
              562,
              568,
              570,
              573,
              578,
              587,
              589,
              606,
              609,
              612,
              614,
              626,
              631,
              632,
              644,
              646,
              649,
              654,
              659,
              662,
              670,
              673,
              675,
              704,
              714,
              718,
              725,
              849,
              865,
              903,
              905,
              920,
              936,
              953,
              1048,
              1054,
              1065,
              1096,
              1098,
              1102,
              1103,
              1105,
              1106,
              1107,
              1108,
              1109,
              1114,
              1117,
              1121,
              1123,
              1125,
              1126,
              1136,
              1140,
              1150,
              1151,
              1152,
              1157,
              1159,
              1160,
              1161,
              1162,
              1163,
              1165,
              1169,
              1170,
              1174,
              1178,
              1182,
              1187,
              1189,
              1190,
              1191,
              1196,
              1199,
              1200,
              1203,
              1207,
              1211,
              1217,
              1223,
              1224,
              1231,
              1232,
              1233,
              1234,
              1235,
              1244,
              1245,
              1248,
              1251,
              1253,
              1256,
              1257,
              1262,
              1265,
              1266,
              1272,
              1273,
              1274,
              1277,
              1279,
              1280,
              1290,
              1295,
              1298,
              1302,
              1308,
              1314,
              1317,
              1319,
              1320,
              1325,
              1329,
              1332,
              1333,
              1336,
              1338,
              1346,
              1347,
              1353,
              1359,
              1363,
              1365,
              1366,
              1374,
              1377,
              1378,
              1381,
              1384,
              1385,
              1388,
              1390,
              1400,
              1408,
              1409,
              1420,
              1430,
              1433,
              1438,
              1444,
              1449,
              1451,
              1454,
              1456,
              1458,
              1496,
              1506,
              1527,
              1536,
              1548,
              1553,
              1576,
              1577,
              1579,
              1624,
              1627,
              1671,
              1831,
              1836,
              1847,
              1854,
              1858,
              1863,
              1880,
              1883,
              1885,
              1887,
              1889,
              1893,
              1899,
              1904,
              1914,
              1919,
              1920,
              1923,
              1926,
              1931,
              1933,
              1934,
              1936,
              1939,
              1940,
              1941,
              1942,
              1954,
              1955,
              1964,
              1969,
              1976,
              1977,
              1979,
              1993,
              1994,
              2006,
              2009,
              2025,
              2032,
              2048,
              2057,
              2061,
              2064,
              2065,
              2066,
              2083,
              2084,
              2086,
              2100,
              2108,
              2113,
              2114,
              2118,
              2122,
              2123,
              2125,
              2126,
              2131,
              2132,
              2139,
              2145,
              2146,
              2151,
              2152,
              2156,
              2160,
              2166,
              2168,
              2172,
              2173,
              2175,
              2178,
              2190,
              2192,
              2350,
              2353,
              2358,
          ]
      )
  
imports: from os.path import dirname, join
  import numpy
  from numpy.testing import assert_array_almost_equal, assert_array_equal
  import pandas
  import pytest
  from sksurv.nonparametric import CensoringDistributionEstimator, SurvivalFunctionEstimator, kaplan_meier_estimator, nelson_aalen_estimator
  from sksurv.testing import FixtureParameterFactory
  from sksurv.util import Surv
label_desc: Use image node_id 7 for calling a global function with example usage: whas500_true_x() and returns: np