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Lists & loops

Iterate, transform, and combine sequences with readable loop patterns.

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Lists & loops easy

Format Lists of Tuples into Numbered Lines in Python

This code loops through a list of (name, grade) tuples and formats each into a numbered line using enumerate and f-strings.

enumerate formatting lists
Python
def format_students(students):
    formatted = []
    for i, student in enumerate(students, start=1):
        name, grade = student
        formatted.append(f"{i}. {name}: {grade}")
    return "\n".join(formatted)


if __name__ == "__main__":
    students = [
        ("Alice", 92),
        ("Bob", 85),
        ("Charl…
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Lists & loops — Python code examples

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This page collects lists & loops snippets — short, copy-ready Python you can paste into our free online IDE and run without installing anything. Each sample includes a plain-English explanation and the full source code.

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Samples are quick reference — one concept per page. For step-by-step teaching, use our Python tutorials. To test yourself, try quizzes or coding challenges. Clean up style with the Python formatter.