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[Tut] Python Tuple Concatenation: A Simple Illustrated Guide - xSicKxBot - 08-21-2023
[Tut] Python Tuple Concatenation: A Simple Illustrated Guide
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<p><a href="https://blog.finxter.com/the-ultimate-guide-to-python-tuples/">Python tuples</a> are similar to <a href="https://blog.finxter.com/python-lists/">lists</a>, but with a key difference: they are <a href="https://blog.finxter.com/mutable-vs-immutable-objects-in-python/">immutable</a>, meaning their elements cannot be changed after creation. </p>
<p class="has-global-color-8-background-color has-background"><strong>Tuple concatenation</strong> means joining multiple tuples into a single tuple. This process maintains the immutability of the tuples, providing a secure and efficient way to combine data. There are several methods for concatenating tuples in Python, such as using the <code>+</code> operator, the <code>*</code> operator, or built-in functions like <code>itertools.chain()</code>.</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="4,9,16" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group=""># Using the + operator to concatenate two tuples
tuple1 = (1, 2, 3)
tuple2 = (4, 5, 6)
concatenated_tuple = tuple1 + tuple2
print("Using +:", concatenated_tuple) # Output: (1, 2, 3, 4, 5, 6) # Using the * operator to repeat a tuple
repeated_tuple = tuple1 * 3
print("Using *:", repeated_tuple) # Output: (1, 2, 3, 1, 2, 3, 1, 2, 3) # Using itertools.chain() to concatenate multiple tuples
import itertools
tuple3 = (7, 8, 9)
chained_tuple = tuple(itertools.chain(tuple1, tuple2, tuple3))
print("Using itertools.chain():", chained_tuple)
# Output: (1, 2, 3, 4, 5, 6, 7, 8, 9)
</pre>
<p>The <a href="https://blog.finxter.com/python-addition-operator/"><code>+</code> operator</a> is used to join two tuples, the <a href="https://blog.finxter.com/python-multiplication-operator/"><code>*</code> operator</a> is used to repeat a tuple, and the <code>itertools.chain()</code> function is used to concatenate multiple tuples. All these methods maintain the immutability of the tuples</p>
<h2 class="wp-block-heading">Understanding Tuples</h2>
<p class="has-global-color-8-background-color has-background"><img decoding="async" src="https://s.w.org/images/core/emoji/14.0.0/72x72/1f4a1.png" alt="?" class="wp-smiley" style="height: 1em; max-height: 1em;" /> <strong>Python tuple</strong> is a fundamental data type, serving as a collection of ordered, immutable elements. Tuples are used to group multiple data items together. Tuples are created using parentheses <code>()</code> and elements within the tuple are separated by commas. </p>
<p>For example, you can create a tuple as follows:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">my_tuple = (1, 2, 3, 4, 'example')
</pre>
<p>In this case, the tuple <code>my_tuple</code> has five elements, including integers and a string. Python allows you to store values of different data types within a tuple.</p>
<p>Immutable means that tuples cannot be changed once defined, unlike lists. This immutability makes tuples faster and more memory-efficient compared to lists, as they require less overhead to store and maintain element values.</p>
<p>Being an ordered data type means that the elements within a tuple have a definite position or order in which they appear, and this order is preserved throughout the tuple’s lifetime.</p>
<p class="has-base-2-background-color has-background"><img decoding="async" src="https://s.w.org/images/core/emoji/14.0.0/72x72/1f4a1.png" alt="?" class="wp-smiley" style="height: 1em; max-height: 1em;" /> <strong>Recommended</strong>: <a href="https://blog.finxter.com/the-ultimate-guide-to-python-tuples/">Python Tuple Data Type</a></p>
<h2 class="wp-block-heading">Tuple Concatenation Basics</h2>
<div class="wp-block-image">
<figure class="aligncenter size-full"><img decoding="async" fetchpriority="high" width="553" height="553" src="https://blog.finxter.com/wp-content/uploads/2023/08/Finxter_declutter_your_brain_gain_clarity_5a145cd2-0e2c-486b-9329-8b73addc668f.png" alt="" class="wp-image-1646465" srcset="https://blog.finxter.com/wp-content/uploads/2023/08/Finxter_declutter_your_brain_gain_clarity_5a145cd2-0e2c-486b-9329-8b73addc668f.png 553w, https://blog.finxter.com/wp-content/uploads/2023/08/Finxter_declutter_your_brain_gain_clarity_5a145cd2-0e2c-486b-9329-8b73addc668f-300x300.png 300w, https://blog.finxter.com/wp-content/uploads/2023/08/Finxter_declutter_your_brain_gain_clarity_5a145cd2-0e2c-486b-9329-8b73addc668f-150x150.png 150w" sizes="(max-width: 553px) 100vw, 553px" /></figure>
</div>
<p>One common operation performed on tuples is <strong>tuple concatenation, which involves combining two or more tuples into a single tuple</strong>. This section will discuss the basics of tuple concatenation using the <code>+</code> operator and provide examples to demonstrate the concept.</p>
<h3 class="wp-block-heading">Using the + Operator</h3>
<p class="has-global-color-8-background-color has-background">The <code>+</code> operator is a simple and straightforward way to concatenate two tuples. When using the <code>+</code> operator, the two tuples are combined into a single tuple without modifying the original tuples. This is particularly useful when you need to merge values from different sources or create a larger tuple from smaller ones.</p>
<p>Here’s the basic syntax for using the <code>+</code> operator:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">new_tuple = tuple1 + tuple2
</pre>
<p><code>new_tuple</code> will be a tuple containing all elements of <code>tuple1</code> followed by elements of <code>tuple2</code>. It’s essential to note that since tuples are immutable, the original <code>tuple1</code> and <code>tuple2</code> remain unchanged after the concatenation.</p>
<h3 class="wp-block-heading">Examples of Tuple Concatenation</h3>
<p>Let’s take a look at a few examples to better understand tuple concatenation using the <code>+</code> operator:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">tuple1 = (1, 2, 3)
tuple2 = (4, 5, 6) # Concatenate the tuples
tuple3 = tuple1 + tuple2
print(tuple3) # Output: (1, 2, 3, 4, 5, 6)
</pre>
<p>In this example, we concatenated <code>tuple1</code> and <code>tuple2</code> to create a new tuple called <code>tuple3</code>. Notice that the elements are ordered, and <code>tuple3</code> contains all the elements from <code>tuple1</code> followed by the elements of <code>tuple2</code>.</p>
<p>Here’s another example with tuples containing different data types:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">tuple1 = ("John", "Doe")
tuple2 = (25, "New York") # Concatenate the tuples
combined_tuple = tuple1 + tuple2
print(combined_tuple) # Output: ('John', 'Doe', 25, 'New York')
</pre>
<p>In this case, we combined a tuple containing strings with a tuple containing an integer and a string, resulting in a new tuple containing all elements in the correct order.</p>
<h3 class="wp-block-heading">Using the * Operator</h3>
<p class="has-global-color-8-background-color has-background">The <code>*</code> operator can be used for replicating a tuple a specified number of times and then concatenating the results. This method can be particularly useful when you need to create a new tuple by repeating an existing one. </p>
<p>Here’s an example:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">original_tuple = (1, 2, 3)
replicated_tuple = original_tuple * 3
print(replicated_tuple)
# Output: (1, 2, 3, 1, 2, 3, 1, 2, 3)
</pre>
<p>In the example above, the original tuple is repeated three times and then concatenated to create the <code>replicated_tuple</code>. Note that using the <code>*</code> operator with non-integer values will result in a <code>TypeError</code>.</p>
<h3 class="wp-block-heading">Using itertools.chain()</h3>
<p class="has-global-color-8-background-color has-background">The <code>itertools.chain()</code> function from the <code>itertools</code> module provides another way to concatenate tuples. This function takes multiple tuples as input and returns an iterator that sequentially combines the elements of the input tuples.</p>
<p>Here’s an illustration of using <code>itertools.chain()</code>:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">import itertools tuple1 = (1, 2, 3)
tuple2 = (4, 5, 6)
concatenated_tuple = tuple(itertools.chain(tuple1, tuple2))
print(concatenated_tuple)
# Output: (1, 2, 3, 4, 5, 6)
</pre>
<p>In this example, the <code>itertools.chain()</code> function is used to combine <code>tuple1</code> and <code>tuple2</code>. The resulting iterator is then explicitly converted back to a tuple using the <code><a href="https://blog.finxter.com/python-tuple/">tuple()</a></code> constructor.</p>
<p>It’s important to note that <code>itertools.chain()</code> can handle an arbitrary number of input tuples, making it a flexible option for concatenating multiple tuples:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">tuple3 = (7, 8, 9)
result = tuple(itertools.chain(tuple1, tuple2, tuple3))
print(result)
# Output: (1, 2, 3, 4, 5, 6, 7, 8, 9)
</pre>
<p>Both the <code>*</code> operator and <code>itertools.chain()</code> offer efficient ways to concatenate tuples in Python.</p>
<h2 class="wp-block-heading">Manipulating Tuples</h2>
<div class="wp-block-image">
<figure class="aligncenter size-full"><img loading="lazy" decoding="async" width="553" height="553" src="https://blog.finxter.com/wp-content/uploads/2023/08/Finxter_Galactic_Serenade_A_Whales_Love_for_the_Unreachable_Cos_0b38a245-8d5d-4d2a-b4a9-748c9f837fae.png" alt="" class="wp-image-1646492" srcset="https://blog.finxter.com/wp-content/uploads/2023/08/Finxter_Galactic_Serenade_A_Whales_Love_for_the_Unreachable_Cos_0b38a245-8d5d-4d2a-b4a9-748c9f837fae.png 553w, https://blog.finxter.com/wp-content/uploads/2023/08/Finxter_Galactic_Serenade_A_Whales_Love_for_the_Unreachable_Cos_0b38a245-8d5d-4d2a-b4a9-748c9f837fae-300x300.png 300w, https://blog.finxter.com/wp-content/uploads/2023/08/Finxter_Galactic_Serenade_A_Whales_Love_for_the_Unreachable_Cos_0b38a245-8d5d-4d2a-b4a9-748c9f837fae-150x150.png 150w" sizes="(max-width: 553px) 100vw, 553px" /></figure>
</div>
<p>Tuples are immutable data structures in Python, which means their content cannot be changed once created. However, there are still ways to manipulate and extract information from them.</p>
<h3 class="wp-block-heading">Slicing Tuples</h3>
<p>Slicing is a technique for extracting a range of elements from a tuple. It uses brackets and colons to specify the start, end, and step if needed. The start index is inclusive, while the end index is exclusive.</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">my_tuple = (0, 1, 2, 3, 4)
sliced_tuple = my_tuple[1:4] # This will return (1, 2, 3)
</pre>
<p>You can also use negative indexes, which count backward from the end of the tuple:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">sliced_tuple = my_tuple[-3:-1] # This will return (2, 3)
</pre>
<h3 class="wp-block-heading">Tuple Indexing</h3>
<p>Tuple indexing allows you to access a specific element in the tuple using its position (index).</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">my_tuple = ('apple', 'banana', 'cherry')
item = my_tuple[1] # This will return 'banana'
</pre>
<p>An <code><a href="https://blog.finxter.com/python-indexerror-list-index-out-of-range/">IndexError</a></code> will be raised if you attempt to access an index that does not exist within the tuple.</p>
<h3 class="wp-block-heading">Adding and Deleting Elements</h3>
<p>Since tuples are immutable, you cannot directly add or delete elements. However, you can work around this limitation by:</p>
<ul>
<li><strong>Concatenating tuples</strong>: You can merge two tuples by using the <code>+</code> operator.</li>
</ul>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="3" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">tuple1 = (1, 2, 3)
tuple2 = (4, 5, 6)
combined_tuple = tuple1 + tuple2 # This will return (1, 2, 3, 4, 5, 6)</pre>
<ul>
<li><strong>Converting to a list</strong>: If you need to perform several operations that involve adding or removing elements, you can convert the tuple to a list. Once the operations are completed, you can convert the list back to a tuple.</li>
</ul>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">my_tuple = (1, 2, 3)
my_list = list(my_tuple)
my_list.append(4) # Adding an element
my_list.remove(2) # Removing an element
new_tuple = tuple(my_list) # This will return (1, 3, 4)</pre>
<p>Remember that manipulating tuples in these ways creates new tuples and does not change the original ones.</p>
</p>
<h2 class="wp-block-heading">Common Errors and Solutions</h2>
<div class="wp-block-image">
<figure class="aligncenter size-full"><img loading="lazy" decoding="async" width="565" height="107" src="https://blog.finxter.com/wp-content/uploads/2023/08/image-81.png" alt="" class="wp-image-1646520" srcset="https://blog.finxter.com/wp-content/uploads/2023/08/image-81.png 565w, https://blog.finxter.com/wp-content/uploads/2023/08/image-81-300x57.png 300w" sizes="(max-width: 565px) 100vw, 565px" /></figure>
</div>
<p class="has-global-color-8-background-color has-background">One common error that users might encounter while working with tuple concatenation in Python is the <strong><code>TypeError</code></strong>. This error can occur when attempting to concatenate a tuple with a different data type, such as an integer or a list. </p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="5" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">>>> (1, 2, 3) + 1
Traceback (most recent call last): File "<pyshell#2>", line 1, in <module> (1, 2, 3) + 1
TypeError: can only concatenate tuple (not "int") to tuple</pre>
<p>To overcome this issue, make sure to convert the non-tuple object into a tuple before performing the concatenation. </p>
<p>For example, if you’re trying to concatenate a tuple with a list, you can use the <code>tuple()</code> function to <a href="https://blog.finxter.com/convert-list-to-tuple-2/">convert the list into a tuple</a>:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">tuple1 = (1, 2, 3)
list1 = [4, 5, 6]
concatenated_tuple = tuple1 + tuple(list1)
</pre>
<p class="has-global-color-8-background-color has-background">Another common error related to tuple concatenation is the <strong><code>AttributeError</code></strong>. This error might arise when attempting to call a non-existent method or attribute on a tuple. Since tuples are immutable, they don’t have methods like <a href="https://blog.finxter.com/python-list-append-vs-extend/"><code>append()</code> or <code>extend()</code></a> that allow addition of elements. </p>
<p>Instead, you can concatenate two tuples directly using the <code>+</code> operator:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">tuple1 = (1, 2, 3)
tuple2 = (4, 5, 6)
concatenated_tuple = tuple1 + tuple2
</pre>
<p class="has-global-color-8-background-color has-background">When working with nested tuples, ensure proper syntax and data structure handling to avoid errors like <strong><code>ValueError</code></strong> and <strong><code>TypeError</code></strong>. To efficiently concatenate nested tuples, consider using the <code>itertools.chain()</code> function provided by the <code>itertools</code> module. </p>
<p>This function helps to flatten the nested tuples before concatenation:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">import itertools nested_tuple1 = ((1, 2), (3, 4))
nested_tuple2 = ((5, 6), (7, 8)) flattened_tuple1 = tuple(itertools.chain(*nested_tuple1))
flattened_tuple2 = tuple(itertools.chain(*nested_tuple2)) concatenated_tuple = flattened_tuple1 + flattened_tuple2
</pre>
</p>
<h2 class="wp-block-heading">Frequently Asked Questions</h2>
<div class="wp-block-image">
<figure class="aligncenter size-full"><img decoding="async" loading="lazy" width="553" height="553" src="https://blog.finxter.com/wp-content/uploads/2023/08/Finxter_python_snakes_lined_up_in_a_series_and_a_coder_writing__f641b520-55b7-4ab0-a89b-73f43b0d8f8b.png" alt="" class="wp-image-1646450" srcset="https://blog.finxter.com/wp-content/uploads/2023/08/Finxter_python_snakes_lined_up_in_a_series_and_a_coder_writing__f641b520-55b7-4ab0-a89b-73f43b0d8f8b.png 553w, https://blog.finxter.com/wp-content/uploads/2023/08/Finxter_python_snakes_lined_up_in_a_series_and_a_coder_writing__f641b520-55b7-4ab0-a89b-73f43b0d8f8b-300x300.png 300w, https://blog.finxter.com/wp-content/uploads/2023/08/Finxter_python_snakes_lined_up_in_a_series_and_a_coder_writing__f641b520-55b7-4ab0-a89b-73f43b0d8f8b-150x150.png 150w" sizes="(max-width: 553px) 100vw, 553px" /></figure>
</div>
<h3 class="wp-block-heading">How can I join two tuples?</h3>
<p>To join two tuples, simply use the addition <code>+</code> operator. For example:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">tuple_a = (1, 2, 3)
tuple_b = (4, 5, 6)
result = tuple_a + tuple_b
</pre>
<p>The <code>result</code> variable now contains the concatenated tuple <code>(1, 2, 3, 4, 5, 6)</code>.</p>
<h3 class="wp-block-heading">What is the syntax for tuple concatenation?</h3>
<p>The syntax for concatenating tuples is straightforward. Just use the <code>+</code> operator between the two tuples you want to concatenate.</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">concatenated_tuples = first_tuple + second_tuple
</pre>
<h3 class="wp-block-heading">How to concatenate a tuple and a string?</h3>
<p>To concatenate a tuple and a string, first convert the string into a tuple containing a single element, and then concatenate the tuples. Here’s an example:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">my_tuple = (1, 2, 3)
my_string = "hello"
concatenated_result = my_tuple + (my_string,)
</pre>
<p>The <code>concatenated_result</code> will be <code>(1, 2, 3, 'hello')</code>.</p>
<h3 class="wp-block-heading">Is it possible to modify a tuple after creation?</h3>
<p>Tuples are immutable, which means they cannot be modified after creation (<a href="https://stackoverflow.com/questions/10459324/concatenating-tuple">source</a>). If you need to modify the contents of a collection, consider using a list instead.</p>
<h3 class="wp-block-heading">How can I combine multiple lists of tuples?</h3>
<p>To combine multiple lists of tuples, use a combination of list comprehensions and tuple concatenation. Here is an example:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">lists_of_tuples = [ [(1, 2), (3, 4)], [(5, 6), (7, 8)]
] combined_list = [t1 + t2 for lst in lists_of_tuples for t1, t2 in lst]
</pre>
<p>The <code>combined_list</code> variable will contain <code>[(1, 2, 3, 4), (5, 6, 7, 8)]</code>.</p>
<h3 class="wp-block-heading">Can tuple concatenation be extended to more than two tuples?</h3>
<p>Yes, tuple concatenation can be extended to more than two tuples by using the <code>+</code> operator multiple times. For example:</p>
<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">tuple_a = (1, 2, 3)
tuple_b = (4, 5, 6)
tuple_c = (7, 8, 9)
concatenated_result = tuple_a + tuple_b + tuple_c
</pre>
<p>This will result in <code>(1, 2, 3, 4, 5, 6, 7, 8, 9)</code>.</p>
<p class="has-base-2-background-color has-background"><img decoding="async" src="https://s.w.org/images/core/emoji/14.0.0/72x72/1f4a1.png" alt="?" class="wp-smiley" style="height: 1em; max-height: 1em;" /> <strong>Recommended</strong>: <a href="https://blog.finxter.com/python-crash-course/">Python Programming Tutorial [+Cheat Sheets]</a></p>
<p>The post <a rel="nofollow" href="https://blog.finxter.com/python-tuple-concatenation-a-simple-illustrated-guide/">Python Tuple Concatenation: A Simple Illustrated Guide</a> appeared first on <a rel="nofollow" href="https://blog.finxter.com">Be on the Right Side of Change</a>.</p>
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https://www.sickgaming.net/blog/2023/08/13/python-tuple-concatenation-a-simple-illustrated-guide/