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question:Design a web server using Python and Flask that can display a simple "Hello, World!" message when accessed through a web browser. Ensure that your server is configured to listen on all network interfaces and is accessible from any IP address on port 5000. Provide the code and explain how to run it.
answer:from flask import Flask app = Flask(__name__) @app.route('/') def hello_world(): return 'Hello, World!' if __name__ == '__main__': app.run(host='0.0.0.0', port=5000)
question:Create a python function that concatenates two values, such that if both are numbers, they are added together, and if one or both are strings, they are concatenated as strings. Make sure to import any necessary packages at the beginning of the code snippet. Consider edge cases in your implementation. Provide test cases to verify the correctness of your function.
answer:def concatenate_or_add(value1, value2): Concatenates or adds the two values. If both values are numbers, they are added together. If one or both of the values are strings, they are concatenated as strings. if isinstance(value1, (int, float)) and isinstance(value2, (int, float)): return value1 + value2 return str(value1) + str(value2)
question:Write a Python script that performs simple arithmetic operations (+, -, *, /) on two integers and returns the result. The script should prompt the user for the first number, the second number, and the operation to be performed. It should then display the result of the operation. Make sure to handle division by zero and invalid input gracefully.
answer:def simple_arithmetic_operation(num1, num2, operation): Perform simple arithmetic operations and return the result. Parameters: num1 (int): First number num2 (int): Second number operation (str): The operation to be performed ('+', '-', '*', '/') Returns: float or str: The result of the arithmetic operation, or an error message if invalid input or division by zero. if operation == '+': return num1 + num2 elif operation == '-': return num1 - num2 elif operation == '*': return num1 * num2 elif operation == '/': if num2 == 0: return "Error: Division by zero" else: return num1 / num2 else: return "Error: Invalid operation"
question:Write a Python function to implement the bubble sort algorithm. The function should take an unsorted list of numbers as input and return the list sorted in ascending order. Make sure to also include a simple way to test the function with a set of example inputs to verify its correctness.
answer:def bubble_sort(arr): Sorts a list of numbers in ascending order using bubble sort algorithm. n = len(arr) for i in range(n): # Track if any swapping happened in this pass swapped = False for j in range(0, n - i - 1): if arr[j] > arr[j + 1]: # Swap if elements are in the wrong order arr[j], arr[j + 1] = arr[j + 1], arr[j] swapped = True # If no swapping was done, the list is already sorted if not swapped: break return arr