Sort images by sequence-CodePudding

Hello I'm trying to sort my microscpoy images. I'm using python 3.7 File names' are like this. t0, t1, t2

S18_b0s17t0c0x62672-1792y6689-1024.tif
S18_b0s17t1c0x62672-1792y6689-1024.tif
S18_b0s17t2c0x62672-1792y6689-1024.tif
.
.
.
S18_b0s17t145c0x62672-1792y6689-1024

I tried "sorted" the list but it was like this

can some one give me some tips to sort out by the sequence

CodePudding user response：

I think you can use lambda function do define the sorting key for sorted function

lst = ["S18_b0s17t0c0x62672-1792y6689-1024.tif", "S18_b0s17t1c0x62672-1792y6689-1024.tif", "S18_b0s17t2c0x62672-1792y6689-1024.tif" , "S18_b0s17t145c0x62672-1792y6689-1024"]

sorted_lst = sorted(lst, key=lambda filename: filename[10:].split('c')[0])

CodePudding user response：

You could use a regular expression to extract the integers in the filename, this should solve the issue of 100 coming before 2.

files = ['S18_b0s17t100c0x62672-1792y6689-1024.tif','S18_b0s17t1c0x62672-1792y6689-1024.tif','S18_b0s17t2c0x62672-1792y6689-1024.tif']

sorted(files, key=lambda x: int(re.findall('S\d{1,2}\_b\ds\d{1,2}t(\d )',x)[0]))

Output

['S18_b0s17t1c0x62672-1792y6689-1024.tif',
 'S18_b0s17t2c0x62672-1792y6689-1024.tif',
 'S18_b0s17t100c0x62672-1792y6689-1024.tif']