如何通过加法求csv文件的最大值

import csv

def find_max_value(csv_file):
    max_value = float('-inf')  # 初始化最大值为负无穷

    with open(csv_file, 'r') as file:
        reader = csv.reader(file)
        for row in reader:
            for value in row:
                try:
                    num = float(value)
                    if num > max_value:
                        max_value = num
                except ValueError:
                    pass  # 忽略非数字的值

    return max_value

csv_file = 'data.csv'  # 替换为实际的CSV文件路径
max_value = find_max_value(csv_file)
print("CSV文件的最大值为:", max_value)