Python function definitions, loops, and conditional logic explained with a short example each.
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- How do you define a function in Python?
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Use def, the function name, parentheses, a colon, then indent the body.- What does a function parameter do?
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A parameter is a named placeholder for a value passed when the function is called.- How do you return a value from a function?
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Use the return keyword followed by the value to send back to the caller.- What is a default parameter?
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A parameter with a preset value used when no argument is passed for that parameter.- Give an example of a function with two parameters
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def add(a, b): return a + b- What happens if a function has no return statement?
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The function returns None implicitly.- What is a function docstring?
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A string literal placed right after the def line to document what the function does.- How do you call a function named greet?
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Write the function name followed by parentheses: greet()- What are positional arguments?
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Arguments passed to a function in the order they appear in the definition.- How do you pass keyword arguments to a function?
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Use the parameter name followed by an equals sign and the value: func(name='Alice')- What does *args allow you to do?
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Pass a variable number of positional arguments to a function.- What does **kwargs allow you to do?
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Pass a variable number of keyword arguments to a function.- What is the basic structure of an if statement?
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if condition: followed by indented code that runs only if condition is true- What is the structure of an if-else statement?
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if condition: runs if true, else: runs if condition is false- How do you add a third branch to a conditional?
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Use elif (else if) for additional conditions between if and else.
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