assertWithMessage("Pearson's correlation coefficient of " + values)
            .that(pearsonsCorrelationCoefficient)
            .isNaN();
        assertWithMessage("Pearson's correlation coefficient by addAll(PairedStats) of " + values)
            .that(pearsonsCorrelationCoefficient)
            .isNaN();
      } else {
        assertWithMessage("Pearson's correlation coefficient of " + values)

<img src="/img/python-types/image06.png">

Lưu ý rằng, điều này có nghĩa rằng "`one_person`" là một **thực thể** của lớp `Person`.

Nó không có nghĩa "`one_person`" là một **lớp** gọi là `Person`.

## Pydantic models

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> là một thư viện Python để validate dữ liệu hiệu năng cao.

The MIT License (MIT)

go-toml v2
Copyright (c) 2021 - 2023 Thomas Pelletier

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is

Copyright (C) 2017-2022 Alec Thomas

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The MIT License (MIT)

Copyright (c) 2013-NOW  Jinzhu <******@****.***>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is

        assertEquals(basedir, new File(repo.getBasedir()));
    }

    @Test
    void testAuthenticationHandling() {
        Server server = new Server();
        server.setId("repository");
        server.setUsername("jason");
        server.setPassword("abc123");

        ArtifactRepository repository =
                repositorySystem.createArtifactRepository("repository", "http://foo", null, null, null);

Copyright (c) 2016-2017 Uber Technologies, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is

 Copyright (c) 2004-2023 QOS.ch
 All rights reserved.

 Permission is hereby granted, free  of charge, to any person obtaining
 a  copy  of this  software  and  associated  documentation files  (the
 "Software"), to  deal in  the Software without  restriction, including
 without limitation  the rights to  use, copy, modify,  merge, publish,
 distribute,  sublicense, and/or sell  copies of  the Software,  and to

The MIT License (MIT)

Copyright (c) 2016 Evan Huus
Copyright (c) 2023 Klaus Post

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is

    String jacksons =
        "arfo(Marlon)aorf, (Michael)orfa, afro(Jackie)orfa, " + "ofar(Jemaine), aff(Tito)";
    Iterable<String> family =
        COMMA_SPLITTER
            .trimResults(CharMatcher.anyOf("afro").or(CharMatcher.whitespace()))
            .split(jacksons);
    assertThat(family)
        .containsExactly("(Marlon)", "(Michael)", "(Jackie)", "(Jemaine)", "(Tito)")
        .inOrder();
  }