python for else loop example
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Title: Python "for-else" Loop: A Comprehensive Tutorial
Introduction:
The "for-else" loop is a powerful construct in Python that allows you to execute a block of code after the completion of a "for" loop, but only if the "for" loop exhausts its iterable (i.e., it doesn't encounter a "break" statement). This tutorial will guide you through the syntax and usage of the "for-else" loop with clear examples.
Syntax:
Example 1: Basic "for-else" Loop
Explanation:
In this example, the "for" loop iterates over the elements of the "numbers" list. Since there is no "break" statement, the "else" block is executed, printing "Loop completed successfully."
Example 2: "for-else" Loop with a Break Statement
Explanation:
In this example, the "for" loop contains a conditional statement that checks if the current element is equal to 3. If this condition is met, the "break" statement is executed, and the "else" block is skipped.
Example 3: Using "for-else" with a Prime Number Check
Explanation:
In this example, the "for" loop checks if the variable "num" is divisible by any number between 2 and (num-1). If a divisor is found, the loop breaks, and the "else" block is skipped. If no divisor is found, the "else" block is executed, indicating that the number is prime.
Conclusion:
The "for-else" loop is a valuable tool in Python, providing a convenient way to handle cases where you want to execute code only if a "for" loop completes without encountering a "break" statement. Use it wisely to enhance the readability and efficiency of your code.
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