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🔁 How to Loop Through a Python Dictionary | TechTown.in

Dictionaries in Python are used to store data as key-value pairs, and one of the most powerful things you can do is loop through them.

Whether you’re displaying user data, filtering values, or exporting records — looping through a dictionary gives you full control over its contents.

Let’s explore all the ways to iterate over a Python dictionary — keys, values, and both!

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📦 Sample Dictionary

person = {
    "name": "Tanmay",
    "age": 22,
    "city": "Jaipur"
}

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🔹 Loop Through Keys Only

By default, looping through a dictionary gives you the keys:

for key in person:
    print(key)

Or, explicitly:

for key in person.keys():
    print(key)

🎯 Output:

name
age
city

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🔸 Loop Through Values Only

Use .values() to access just the values:

for value in person.values():
    print(value)

🎯 Output:

Tanmay
22
Jaipur

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🔁 Loop Through Key-Value Pairs

Use .items() to loop through both keys and values:

for key, value in person.items():
    print(f"{key}: {value}")

🎯 Output:

name: Tanmay
age: 22
city: Jaipur

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🧠 Real-Life Example: Display Product Details

product = {
    "id": 101,
    "name": "Laptop",
    "price": 59999,
    "in_stock": True
}

for key, value in product.items():
    print(f"{key.upper()} → {value}")

✅ Great for dashboards, logs, and API data display.

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📊 Filter Values While Looping

for key, value in product.items():
    if isinstance(value, int):
        print(f"{key}: {value}")

🎯 Only prints numeric values — useful for filtering!

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📝 Summary – Dictionary Loop Methods

Loop Type	Syntax	Use Case
Loop through keys	for key in dict:	Default loop
Loop through keys	for key in dict.keys()	Explicit key access
Loop through values	for value in dict.values()	Value-only iteration
Loop through items	for key, value in dict.items()	Most common full iteration

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🏁 Final Thoughts

Looping through a Python dictionary gives you complete control over your data. Whether you’re processing inputs, displaying formatted output, or cleaning data — these loop patterns are essential for real-world Python development.

✅ Learn them once, and use them everywhere — from backend logic to front-end rendering and beyond.

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📘 Continue mastering Python with us at TechTown.in

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