nnThe > operator in Jinja2 is a comparison operator that returns true if the value on the left side is strictly greater than the value on the right side. It is a fundamental tool for controlling template logic based on numerical or alphabetical order. This behavior is consistent with how the > operator works in Python.nn

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How It Works

nThe > operator is typically used within an if statement to evaluate a condition. Jinja2’s templating engine evaluates the expression variable1 > variable2. If the expression is true, the content within the if block is rendered. This is perfect for displaying content only when a certain threshold is met, such as showing a “Sale” tag on products above a certain price or a “High Score” message to a user.n

Syntax

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{% if value1 > value2 %}n  ... content to display if the condition is true ...n{% endif %}

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Demonstration with Code Samples

nHere are some practical examples of how to use the > operator in a Jinja2 application.n

1. Comparing Numerical Values

nThis is the most common use case for the > operator, often used to check against a threshold.nnJinja2 Templaten

{% set user_score = 150 %}n{% if user_score > 100 %}n  <p>Congratulations, you have a high score!</p>n{% else %}n  <p>Keep playing to improve your score.</p>n{% endif %}

nExplanation: The template checks if the numerical value of user_score is greater than 100. Since 150 is greater than 100, the “high score” message is rendered.nn

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2. Using > with for Loops

nYou can use the `>` operator inside a loop to conditionally filter items based on a numerical or alphabetical condition.nnJinja2 Templaten

{% set products = [{ 'name': 'Laptop', 'price': 1500 }, { 'name': 'Mouse', 'price': 50 }, { 'name': 'Keyboard', 'price': 120 }] %}n<h4>Premium Products (> $100):</h4>n<ul>n{% for product in products %}n  {% if product.price > 100 %}n    <li>{{ product.name }} (${{ product.price }})</li>n  {% endif %}n{% endfor %}n</ul>

nExplanation: This loop iterates through a list of products. The `if` statement checks if the `price` attribute of each `product` is greater than 100. Only products that meet this condition are rendered in the list.nn

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3. Comparing Strings Alphabetically

nThe `>` operator can also be used to compare strings based on their alphabetical order.nnJinja2 Templaten

{% set current_word = 'apple' %}n{% if current_word > 'banana' %}n  <p>The word 'apple' comes after 'banana' alphabetically.</p>n{% else %}n  <p>The word 'apple' does not come after 'banana' alphabetically.</p>n{% endif %}

nExplanation: The template checks the alphabetical order of the strings. In this case, `’apple’` is not alphabetically greater than `’banana’`, so the `else` block is rendered.nn