python3 处理seq文件

最近接手一批seq的图片文件，处理方式也是有的。[引]

但是是该代码只能在python2下运行，我一脚踩到python3这个坑里面来了，最后还是找到了为什么不能在python3下运行的原因，如下

 strings 分别在 Python2、Python 3下[引]

What is tensorflow.compat.as_str()?

Python 2 将 strings 处理为原生的 bytes 类型，而不是 unicode， 

Python 3 所有的 strings 均是 unicode 类型。

再后来就找到了填坑方式：

#第一处
string = str(f.read())
#改为==>
string = f.read().decode('latin-1')
#第二处
i.write(splitstring)
i.write(img)
#改为==>
i.write(splitstring.encode('latin-1'))
i.write(img.encode('latin-1'))

下面还有啥print的格式常规修改，文件路径修改，酌情处理，大功告成！！

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我也将我修改过的源码分享出来，在python3.6下运行没有问题。

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# Deal with .seq format for video sequence
# Author: Kaij
# The .seq file is combined with images,
# so I split the file into several images with the image prefix
# "xFFxD8xFFxE0x00x10x4Ax46x49x46".
import os.path
import fnmatch
import shutil
def open_save(file,savepath):
# read .seq file, and save the images into the savepath
f = open(file,'rb+')
string = f.read().decode('latin-1')
# PNG
# splitstring = "x89x50x4ex47x0dx0ax1ax0a"
splitstring = "xFFxD8xFFxE0x00x10x4Ax46x49x46"
# split .seq file into segment with the image prefix
strlist=string.split(splitstring)
f.close()
count = 0
# delete the image folder path if it exists
if os.path.exists(savepath):
shutil.rmtree(savepath)
# create the image folder path
if not os.path.exists(savepath):
os.mkdir(savepath)
# deal with file segment, every segment is an image except the first one
for img in strlist:
filename = str(count)+'.jpg'
filenamewithpath=os.path.join(savepath, filename)
# abandon the first one, which is filled with .seq header
if count > 0:
i=open(filenamewithpath,'wb+')
i.write(splitstring.encode('latin-1'))
i.write(img.encode('latin-1'))
i.close()
count += 1
if __name__=="__main__":
rootdir = "./set_data/set01"
# walk in the rootdir, take down the .seq filename and filepath
for parent, dirnames, filenames in os.walk(rootdir):
for filename in filenames:
# check .seq file with suffix
if fnmatch.fnmatch(filename,'*.seq'):
# take down the filename with path of .seq file
thefilename = os.path.join(parent, filename)
# create the image folder by combining .seq file path with .seq filename
thesavepath = parent+'/'+filename.split('.')[0]
print ("Filename=" + thefilename)
print ("Savepath=" + thesavepath)
open_save(thefilename,thesavepath)

最后

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