Почему неправильно выводятся дочерниие элементы?

Вот исходный код страницы: view-source:www.pythonscraping.com/pages/page3.html
Вот мой код:

from urllib.request import urlopen
from urllib.error import HTTPError
from bs4 import BeautifulSoup as bs
from pprint import pprint

html_page = urlopen("http://www.pythonscraping.com/pages/page3.html")
soup = bs(html_page.read(), "html.parser")
for i in soup.find('table', {'id':'giftList'}).children:
    print(i)

Я считаю, что должны выводится все теги tr, без содержимого td, и другие теги лежащие на одном уровне с tr. Но выводится это:

<tr>
    <th>
        Item Title
    </th>
    <th>
        Description
    </th>
    <th>
        Cost
    </th>
    <th>
        Image
    </th>
</tr>


<tr class="gift" id="gift1">
    <td>
        Vegetable Basket
    </td>
    <td>
        This vegetable basket is the perfect gift for your health conscious (or overweight) friends!
        <span class="excitingNote">Now with super-colorful bell peppers!</span>
    </td>
    <td>
        $15.00
    </td>
    <td>
        <img src="../img/gifts/img1.jpg" />
    </td>
</tr>


<tr class="gift" id="gift2">
    <td>
        Russian Nesting Dolls
    </td>
    <td>
        Hand-painted by trained monkeys, these exquisite dolls are priceless! And by "priceless," we mean "extremely expensive"! <span class="excitingNote">8 entire dolls per set! Octuple the presents!</span>
    </td>
    <td>
        $10,000.52
    </td>
    <td>
        <img src="../img/gifts/img2.jpg" />
    </td>
</tr>


<tr class="gift" id="gift3">
    <td>
        Fish Painting
    </td>
    <td>
        If something seems fishy about this painting, it's because it's a fish! <span class="excitingNote">Also hand-painted by trained monkeys!</span>
    </td>
    <td>
        $10,005.00
    </td>
    <td>
        <img src="../img/gifts/img3.jpg" />
    </td>
</tr>


<tr class="gift" id="gift4">
    <td>
        Dead Parrot
    </td>
    <td>
        This is an ex-parrot! <span class="excitingNote">Or maybe he's only resting?</span>
    </td>
    <td>
        $0.50
    </td>
    <td>
        <img src="../img/gifts/img4.jpg" />
    </td>
</tr>


<tr class="gift" id="gift5">
    <td>
        Mystery Box
    </td>
    <td>
        If you love suprises, this mystery box is for you! Do not place on light-colored surfaces. May cause oil staining. <span class="excitingNote">Keep your friends guessing!</span>
    </td>
    <td>
        $1.50
    </td>
    <td>
        <img src="../img/gifts/img6.jpg" />
    </td>
</tr>

А если поменять children на descendants, то выводится это:

<tr>
    <th>
        Item Title
    </th>
    <th>
        Description
    </th>
    <th>
        Cost
    </th>
    <th>
        Image
    </th>
</tr>
<th>
    Item Title
</th>

Item Title

<th>
    Description
</th>

Description

<th>
    Cost
</th>

Cost

<th>
    Image
</th>

Image



<tr class="gift" id="gift1">
    <td>
        Vegetable Basket
    </td>
    <td>
        This vegetable basket is the perfect gift for your health conscious (or overweight) friends!
        <span class="excitingNote">Now with super-colorful bell peppers!</span>
    </td>
    <td>
        $15.00
    </td>
    <td>
        <img src="../img/gifts/img1.jpg" />
    </td>
</tr>
<td>
    Vegetable Basket
</td>

Vegetable Basket

<td>
    This vegetable basket is the perfect gift for your health conscious (or overweight) friends!
    <span class="excitingNote">Now with super-colorful bell peppers!</span>
</td>

This vegetable basket is the perfect gift for your health conscious (or overweight) friends!

<span class="excitingNote">Now with super-colorful bell peppers!</span>
Now with super-colorful bell peppers!


<td>
    $15.00
</td>

$15.00

<td>
    <img src="../img/gifts/img1.jpg" />
</td>


<img src="../img/gifts/img1.jpg" />




<tr class="gift" id="gift2">
    <td>
        Russian Nesting Dolls
    </td>
    <td>
        Hand-painted by trained monkeys, these exquisite dolls are priceless! And by "priceless," we mean "extremely expensive"! <span class="excitingNote">8 entire dolls per set! Octuple the presents!</span>
    </td>
    <td>
        $10,000.52
    </td>
    <td>
        <img src="../img/gifts/img2.jpg" />
    </td>
</tr>
<td>
    Russian Nesting Dolls
</td>

Russian Nesting Dolls

<td>
    Hand-painted by trained monkeys, these exquisite dolls are priceless! And by "priceless," we mean "extremely expensive"! <span class="excitingNote">8 entire dolls per set! Octuple the presents!</span>
</td>

Hand-painted by trained monkeys, these exquisite dolls are priceless! And by "priceless," we mean "extremely expensive"!
<span class="excitingNote">8 entire dolls per set! Octuple the presents!</span>
8 entire dolls per set! Octuple the presents!


<td>
    $10,000.52
</td>

$10,000.52

<td>
    <img src="../img/gifts/img2.jpg" />
</td>


<img src="../img/gifts/img2.jpg" />




<tr class="gift" id="gift3">
    <td>
        Fish Painting
    </td>
    <td>
        If something seems fishy about this painting, it's because it's a fish! <span class="excitingNote">Also hand-painted by trained monkeys!</span>
    </td>
    <td>
        $10,005.00
    </td>
    <td>
        <img src="../img/gifts/img3.jpg" />
    </td>
</tr>
<td>
    Fish Painting
</td>

Fish Painting

<td>
    If something seems fishy about this painting, it's because it's a fish! <span class="excitingNote">Also hand-painted by trained monkeys!</span>
</td>

If something seems fishy about this painting, it's because it's a fish!
<span class="excitingNote">Also hand-painted by trained monkeys!</span>
Also hand-painted by trained monkeys!


<td>
    $10,005.00
</td>

$10,005.00

<td>
    <img src="../img/gifts/img3.jpg" />
</td>


<img src="../img/gifts/img3.jpg" />




<tr class="gift" id="gift4">
    <td>
        Dead Parrot
    </td>
    <td>
        This is an ex-parrot! <span class="excitingNote">Or maybe he's only resting?</span>
    </td>
    <td>
        $0.50
    </td>
    <td>
        <img src="../img/gifts/img4.jpg" />
    </td>
</tr>
<td>
    Dead Parrot
</td>

Dead Parrot

<td>
    This is an ex-parrot! <span class="excitingNote">Or maybe he's only resting?</span>
</td>

This is an ex-parrot!
<span class="excitingNote">Or maybe he's only resting?</span>
Or maybe he's only resting?


<td>
    $0.50
</td>

$0.50

<td>
    <img src="../img/gifts/img4.jpg" />
</td>


<img src="../img/gifts/img4.jpg" />




<tr class="gift" id="gift5">
    <td>
        Mystery Box
    </td>
    <td>
        If you love suprises, this mystery box is for you! Do not place on light-colored surfaces. May cause oil staining. <span class="excitingNote">Keep your friends guessing!</span>
    </td>
    <td>
        $1.50
    </td>
    <td>
        <img src="../img/gifts/img6.jpg" />
    </td>
</tr>
<td>
    Mystery Box
</td>

Mystery Box

<td>
    If you love suprises, this mystery box is for you! Do not place on light-colored surfaces. May cause oil staining. <span class="excitingNote">Keep your friends guessing!</span>
</td>

If you love suprises, this mystery box is for you! Do not place on light-colored surfaces. May cause oil staining.
<span class="excitingNote">Keep your friends guessing!</span>
Keep your friends guessing!


<td>
    $1.50
</td>

$1.50

<td>
    <img src="../img/gifts/img6.jpg" />
</td>


<img src="../img/gifts/img6.jpg" />

Почему children работает не так, как я говорил выше?