解释下面代码：def execute(sheet_name, path=None): file_object = ExcelReader(path, sheet_name=sheet_name) data = file_object.get_case_data() for i in data: action = i["action"] action_values = i.get("action_values", [None]) print("数据action_values:",action_values) print("数据action:",action) keys_func = getattr(KeyWords, action) # 得到关键字函数 keys_func(**action_values)

这段代码定义了一个名为execute的函数，它需要两个参数: sheet_name表示要处理的表格名，path表示表格文件的路径。在函数中，首先创建一个ExcelReader对象file_object，用于读取指定的表格文件。然后通过调用get_case_data()方法，获取表格中所有测试用例数据。接着，使用for循环遍历数据，获取每个测试用例的操作及其对应的参数。然后使用getattr()函数，从KeyWords模块中获取对应的关键字函数，并将参数作为关键字参数传递给该函数。函数中还会输出每个测试用例的操作及其参数，方便调试和跟踪。

相关问题

if __name__ == '__main__':

This line of code is often used in Python scripts and modules to determine if the code is being run as the main program or if it is being imported as a module into another program.

When a Python file is imported as a module into another program, any code outside of a function or class definition will be executed. This can cause issues if the code is not intended to be run when the file is imported.

By using the if __name__ == '__main__': statement, code can be placed inside this block that will only execute if the file is being run as the main program. This allows for separation of code that is meant to be run as a standalone program versus code that is meant to be used as a module.

For example:

def my_function():
    print('Hello, world!')

if __name__ == '__main__':
    my_function()

In this example, the function `my_function()` is defined outside of the if statement. However, when the code is run, the function will only be called if the file is being run as the main program. If the file is imported as a module, the function will not be called.

最后用if__name__ == '__main__': main()

好的，下面是加入 `if __name__ == '__main__':` 的完整代码：

import sqlite3

def create_table():
    conn = sqlite3.connect('courses.db')
    c = conn.cursor()

    # 创建数据表
    c.execute('''CREATE TABLE courses
                (name TEXT, teacher TEXT, location TEXT, weekday TEXT, start_time INT, end_time INT)''')

    conn.commit()
    conn.close()

def add_course(name, teacher, location, weekday, start_time, end_time):
    conn = sqlite3.connect('courses.db')
    c = conn.cursor()

    # 添加一门课程
    c.execute(f"INSERT INTO courses VALUES ('{name}', '{teacher}', '{location}', '{weekday}', {start_time}, {end_time})")

    conn.commit()
    conn.close()

def view_courses():
    conn = sqlite3.connect('courses.db')
    c = conn.cursor()

    # 查询所有课程信息
    c.execute("SELECT * FROM courses")
    rows = c.fetchall()

    for row in rows:
        print(row)

    conn.close()

def edit_course(name, teacher, location, weekday, start_time, end_time):
    conn = sqlite3.connect('courses.db')
    c = conn.cursor()

    # 修改一门课程
    c.execute(f"UPDATE courses SET teacher='{teacher}', location='{location}', weekday='{weekday}', start_time={start_time}, end_time={end_time} WHERE name='{name}'")

    conn.commit()
    conn.close()

def delete_course(name):
    conn = sqlite3.connect('courses.db')
    c = conn.cursor()

    # 删除一门课程
    c.execute(f"DELETE FROM courses WHERE name='{name}'")

    conn.commit()
    conn.close()

def main():
    # 创建数据表
    create_table()

    # 添加一门课程
    add_course('计算机网络', '张三', '教学楼101', '星期一', 8, 10)

    # 查看所有课程
    view_courses()

    # 修改一门课程
    edit_course('计算机网络', '李四', '教学楼201', '星期二', 10, 12)

    # 查看所有课程
    view_courses()

    # 删除一门课程
    delete_course('计算机网络')

    # 查看所有课程
    view_courses()

if __name__ == '__main__':
    main()

这个代码实现了创建数据表、添加课程、查看课程、编辑课程、删除课程等功能，并使用了 `if __name__ == '__main__':` 来保证了代码的可重用性和可扩展性。你可以根据需要进行修改和扩展，让其更加符合你的实际需求。