How to Create a Tuple in PythonSee Python: Tips and Tricks for similar articles.
Let's start with a lie: Python tuples are created using parentheses, like this:
MAGENTA = (255, 0, 255)
Wait, what??! In Python, tuples are not created with parentheses?
The truth is that tuples are created with commas AND do not require parentheses. You can create a tuple like this:
MAGENTA = 255, 0, 255 #Avoid this
But just because you can doesn't mean you should. It's a better idea to get used to including the parentheses, because sometimes you do need them.
The best way to understand why you should get in the habit of using parentheses when creating tuples is to look at some Python code:
def show_type(obj): print(type(obj)) #tuple created w/o parentheses (works but bad practice) MAGENTA = 255, 0, 255 show_type(MAGENTA) #When passing a tuple to a function, you need parentheses: show_type( (255, 0, 255) ) #Passing the tuple w/o parentheses to a function will error show_type( 255, 0, 255 )
The above code will render the following:
- On line 5, the
MAGENTAtuple is created without using parentheses.
- By passing
show_type()function, we see that
MAGENTAis indeed a tuple.
- On line 9, the tuple
(255, 0, 255)(constructed with parentheses) is passed to the
show_type()function. This works fine.
- On line 12, the tuple (well, not really)
255, 0, 255(constructed without parentheses) is passed to the
show_type()function. In this case, Python passes the values to the
show_type()function as three separate arguments. As the function only expects one argument, this results in an error:
TypeError: show_type() takes 1 positional argument but 3 were given.
Creating a Single-element Tuple
To create an empty tuple, use an empty set of parentheses:
veggies_my_son_likes = ()
To create a single-element tuple, follow the element with a comma, like this:
pitchers_with_500_wins = ('Cy Young',)
If you do not include the comma, you just get a string as illustrated below:
So, in a nutshell, tuples are created with commas, but you should wrap them in parentheses.
- Fixing WebVTT Times with Python
- Using Python to Convert Images to WEBP
- Scientific Notation in Python
- Understanding Python’s __main__ variable
- Converting Leading Tabs to Spaces with Python
- pow(x, y, z) more efficient than x**y % z and other options
- A Python Model for Ping Pong Matches
- Bulk Convert Python files to IPython Notebook Files (py to ipynb conversion)
- Python’s date.strftime() slower than str(), split, unpack, and concatenate?
- Basic Python Programming Exercise: A Penny Doubled Every Day
- Bi-directional Dictionary in Python
- How to find all your Python installations on Windows (and Mac)
- Associate Python Files with IDLE
- Change Default autosave Interval in JupyterLab
- Python: isdigit() vs. isdecimal()
- Python Clocks Explained
- Python Color Constants Module
- Maximum recursion depth exceeded while calling a Python object
- When to use Static Methods in Python? Never
- Finally, a use case for finally – Python Exception Handling
- Creating an Email Decorator with Python and AWS
- Python Coding Challenge: Two People with the Same Birthday
- How to Create a Simple Simulation in Python – Numeric Data
- Collatz Conjecture in Python
- Simple Python Script for Extracting Text from an SRT File
- Python Virtual Environments with venv
- Mapping python to Python 3 on Your Mac
- How to Make IDLE the Default Editor for Python Files on Windows
- How to Do Ternary Operator Assignment in Python
- How to Convert Seconds to Years with Python
- How to Create a Python Package
- How to Read a File with Python
- How to Check the Operating System with Python
- How to Use enumerate() to Print a Numbered List in Python
- How to Repeatedly Append to a String in Python
- Checking your Sitemap for Broken Links with Python
- How to do Simultaneous Assignment in Python
- Visual Studio Code - Opening Files with Python open()
- How to Slice Strings in Python
- How Python Finds Imported Modules
- How to Merge Dictionaries in Python
- How to Index Strings in Python
- How to Create a Tuple in Python (this article)