在函数参数python中传递多个字典

我有一个函数,它以一个以上的字典作为参数。我一直收到以下消息,语法有问题:

SyntaxError: non-keyword arg after keyword arg

基本上,我的代码将遍历文件名列表中的每个项,并获取要在compare()函数上传递的每个项的文件大小。我在传递多个词典时遇到问题。每个字典有两个键,它们是文件名和文件大小。我的代码如下:

def compare(previous,current):

    tolerance = 0.4

    if previous is None and current is None:
        return " missing in both"

    if previous is None:
        return " new"

    if current is None:
        return " missing"

    size_ratio = float(current)/previous

    if size_ratio >= 1 + tolerance:
        return " %d%% bigger" % round(((size_ratio - 1) * 100),0)

    if size_ratio <= 1 - tolerance:
        return " %d%% smaller" % round(((1 - size_ratio) * 100),0)

    return " ok"


def compare_filesets(file_names, previous_data, current_data):


    for item in file_names:

     print (item + compare(previous_data.get('File Size'), current_data.get('File Size')) + "\n")



compare_filesets(file_names=['a.json', 'b.json', 'c.json'],
                 current_data= {"File Name": "a.json", "File Size": 1000}, {"File Name": "a.json", "File Size": 1000},
                 previous_data={"File Name": "a.json", "File Size": 1000}, {"File Name": "a.json", "File Size": 1000})