Скачать или смотреть Input and Handling Error in Python

1. Input in Python
Input refers to the data provided by the user to the program during runtime. In Python, the input() function is used to receive input from the user as a string. If necessary, the input can be converted to other data types such as integers or floats using type conversion functions like int() or float().

Example of input usage:

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name = input("Enter your name: ") age = int(input("Enter your age: ")) print(f"Your name is {name} and your age is {age}.")

2. Error Handling in Python
Error handling is used to manage runtime errors so that they do not crash the program unexpectedly. Python uses the try-except block to handle errors.

Simple error handling example:

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try: number = int(input("Enter a number: ")) print(f"The number you entered is {number}") except ValueError: print("Invalid input. Please enter a valid number.")

3. Structure of Try-Except Block
A try-except block consists of several components:

try: Contains the code that might raise an error.

except: Catches and handles the error if it occurs.

else: (optional) Contains code that executes if no error occurs.

finally: (optional) Contains code that always executes, regardless of whether an error occurred.

Complete example of error handling:

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try: number = int(input("Enter a number: ")) result = 10 / number except ValueError: print("Input must be a number.") except ZeroDivisionError: print("Cannot divide by zero.") else: print(f"The result is {result}") finally: print("Program execution finished.")

This approach makes the program more robust against errors and provides a better user experience.