Скачать или смотреть Python3 FileNotFoundError with any file using subprocess popen

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In Python, the subprocess module is commonly used to spawn new processes, connect to their input/output/error pipes, and obtain their return codes. Occasionally, when working with subprocess.Popen(), you may encounter a FileNotFoundError if the specified file or executable cannot be found. This tutorial will guide you through understanding and handling this exception.
FileNotFoundError is a built-in exception in Python that is raised when an attempt to access or open a file fails because the file is not found at the specified path. When using subprocess.Popen(), this error can occur if the specified executable or script is not in the system's PATH or if the file simply does not exist.
Let's start with a simple example that uses subprocess.Popen() to execute a non-existent command:
In this example, we are trying to run a command called "nonexistent_command," which does not exist on the system. This will raise a FileNotFoundError, and we will handle it in the except block.
To handle FileNotFoundError gracefully, you can take the following steps:
Check the existence of the file or command before calling subprocess.Popen().
Use a try-except block to catch the FileNotFoundError.
By following these steps, you can handle the FileNotFoundError in a controlled manner, allowing your program to respond appropriately when a file or command is not found.
Handling FileNotFoundError when working with subprocess.Popen() is essential for building robust and reliable Python scripts. By incorporating these techniques into your code, you can gracefully manage situations where the specified file or command is not available on the system.
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