4112338
# 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.')
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