glob.glob（）非常适合该任务。另外，
with在处理文件时，请使用上下文管理器：
import csvimport globimport osdirectory = raw_input("INPUT Folder:")output = raw_input("OUTPUT Folder:")txt_files = os.path.join(directory, '*.txt')for txt_file in glob.glob(txt_files): with open(txt_file, "rb") as input_file: in_txt = csv.reader(input_file, delimiter='=') filename = os.path.splitext(os.path.basename(txt_file))[0] + '.csv' with open(os.path.join(output, filename), 'wb') as output_file: out_csv = csv.writer(output_file) out_csv.writerows(in_txt)
