二进制复制文件，二进制复制,# 适合普通大小文件的复

二进制复制文件，二进制复制,# 适合普通大小文件的复

# 适合普通大小文件的复制def text_write(infilename, outfilename):    infile = open(infilename, 'r')    outfile = open(outfilename, 'w')    for line in infile.readlines():        print(line, file=outfile, end='')    print('Done.')＃ 适合大数据文件的复制def buffer_write(infilename, outfilename, buffersize=5000):    infile = open(infilename, 'rb')    outfile = open(outfilename, 'wb')    buffer = infile.read(buffersize)    while len(buffer):        outfile.write(buffer)        print('.', end='')        buffer = infile.read(buffersize)    print()    print('Done.')