[Tut] Python One Line Ternary - Printable Version

[Tut] Python One Line Ternary - Printable Version

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[Tut] Python One Line Ternary - xSicKxBot - 07-11-2020

Python One Line Ternary

Ternary (from Latin ternarius) is an adjective meaning “composed of three items”. (source) So, literally, the ternary operator in Python is composed of three operands.

Syntax: The three operands are written in an intuitive combination

Code:
... if ... else ...

Code:
<On True> if <Condition> else <On False>

Operand |
Description

<On True> |
The return expression of the operator in case the condition evaluates to

Code:
True

<Condition> |
The condition that determines whether to return the <On True> or the <On False> branch.

<On False> |
The return expression of the operator in case the condition evaluates to

Code:
False

[i]Operands of the Ternary Operator[/i]

Let’s have a look at a minimum example in our interactive code shell:

https://trinket.io/embed/python/42f3df6ddd

Exercise: Run the code and input your age. What’s the output? Run the code again and try to change the output!

Let’s dive into the different variants of the Ternary operator in Python!

Python Ternary Examples

Let’s have a quick overview of a few examples on different methods to use the ternary operator:

Code:
age = 17 # Method 1: Basic Ternary
print('wtf' if age<20 else 'What?') 'wtf' # Method 2: Ternary Tuple
# (onFalse, onTrue) [condition]
print(('wtf', 'What?') [age<20]) 'What?' # Method 3: Ternary Dictionary
# Use Dictionary True/False values
print({True: 'wtf', False: 'What?'} [age<20]) 'wtf' # Method 4: Ternary Lambda
# Lambda function with 0 arguments
# Execute only one branch expression --> more efficient
print((lambda: 'wtf', lambda:'What?') [age<20]()) 'What?'

Some of them are pretty confusing, right? Stay with me for a moment because you’ll learn about each of those next!

Python Ternary Tuple

Python Ternary Dictionary

Python Ternary Lambda

Python Ternary Multiple Lines

Python Ternary Elif

Python Ternary Nested

Python Ternary Plot

Python Ternary Diagram

Python Ternary Evaluation Order

Python Ternary Try Except

Python Ternary Tree

Python Ternary in List Comprehension

Python Ternary Pep8 Pythonic

Python Ternary Can’t Assign to Conditional Expression

Python Ternary For Loop

Python Ternary Break

Python Ternary None

Python Ternary Multiple Conditions

Where to Go From Here?

Enough theory, let’s get some practice!

To become successful in coding, you need to get out there and solve real problems for real people. That’s how you can become a six-figure earner easily. And that’s how you polish the skills you really need in practice. After all, what’s the use of learning theory that nobody ever needs?

Practice projects is how you sharpen your saw in coding!

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Then become a Python freelance developer! It’s the best way of approaching the task of improving your Python skills—even if you are a complete beginner.

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