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Why Does My Python `print` Statement Output 'None'?

Dec 18, 2024 am 05:02 AM

Why Does My Python `print` Statement Output

Why the Output Prints None"

In Python, the "print" statement can be used to display information in the output console. However, if there are multiple "print" statements within a program, their effects can be unexpected.

Consider the following code:

def lyrics():
    print("The very first line")

print(lyrics())
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In this code, there are two "print" statements: one inside the "lyrics" function and another outside the function. When a function doesn't explicitly return a value, it implicitly returns None.

When the "lyrics" function is called with the "print(...)" statement, it executes and prints "The very first line" to the output console. However, since the function doesn't return a value, it implicitly returns None. This None value is then passed to the second "print(...)" statement outside the function, which prints it to the console.

As a result, the output contains both "The very first line" and "None". To avoid this issue, you should use a "return" statement at the end of the function to return a specific value. For example:

def lyrics():
    return "The very first line"

print(lyrics())
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In this case, the "lyrics" function explicitly returns the string "The very first line", which is then printed by the second "print(...)" statement outside the function. This results in a clear output of "The very first line" without the unnecessary "None" value.

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