如何在Python语言中检查文件是否为Python文件

import os

def is_python_file(file_path):
    file_extension = os.path.splitext(file_path)[1]
    return file_extension == '.py'

def is_python_file(file_path):
    with open(file_path, 'r') as file:
        first_line = file.readline()
        return first_line.startswith('import') or first_line.startswith('from') or 'def ' in first_line

import magic

def is_python_file(file_path):
    mime_type = magic.from_file(file_path, mime=True)
    return mime_type == 'text/x-python'