Rename script

import os

# Function to rename multiple files
def main():
    wd = "" #folder path for extracted student submissions"
    name_list = []
    full_name = []
    with open('Student List.txt') as f:
        for line in f:
            line = line.split()
            full_name.append(line[1]+"_"+ line[0])
            name = line[1]+line[0]
            name = name.lower()
            name_list.append(name)

    for filename in os.listdir(wd):

        sep = filename.split('_')
        s_name = sep[0]

        for name_id in range(len(name_list)):
            if name_list[name_id] in s_name.lower():
                outfile = "mygrp" +"_"+full_name[name_id] +"_"+sep[-1]
                try:

                    src = wd + "\\" + filename
                    dst = wd + "\\" + outfile
                    os.rename(src, dst)

                except WindowsError:
                    outfile = "mygrp" +"_"+full_name[name_id] +"_"+ "01"+sep[-1]
                    src = wd + "\\" + filename
                    dst = wd + "\\" + outfile
                    os.rename(src, dst)

                finally:
                    break


if __name__ == '__main__':
    main()