python excel/csvファイルの読み書き

# PATH             ：
#               ，         
#            ，           
os.path.split('PATH') 

file_dir, file_name = os.path.split(file_path)

os.chdir(file_dir)
#   excel     list
data = xlrd.open_workbook(file_name)
table = data.sheets()[0]
xls_list = []
for i in range(table.nrows):
     xls_list.append(table.row_values(i))

#  list  csv  
zip_file_name = 'test.csv'
with open(zip_file_name, 'w', encoding='utf8') as csv_file:
    writer = csv.writer(csv_file)
    writer.writerows(xls_list)