PySeq is a python module that finds groups of items that follow a naming convention containing a numerical sequence index (e.g. fileA.001.png, fileA.002.png, fileA.003.png...) and serializes them into a compressed sequence string representing the entire sequence (e.g. fileA.1-3.png). It should work regardless of where the numerical sequence index is embedded in the name. For examples, see basic usage below or http://rsgalloway.github.io/pyseq
Installation using setuputils: :
% pip install pyseqUsing the "z1" file sequence example in the "tests" directory, we start by listing the directory contents using ls. :
$ ls tests/files/z1*
tests/files/z1_001_v1.1.png tests/files/z1_002_v1.3.png
tests/files/z1_001_v1.2.png tests/files/z1_002_v1.4.png
tests/files/z1_001_v1.3.png tests/files/z1_002_v2.1.png
tests/files/z1_001_v1.4.png tests/files/z1_002_v2.2.png
tests/files/z1_002_v1.1.png tests/files/z1_002_v2.3.png
tests/files/z1_002_v1.2.png tests/files/z1_002_v2.4.pngNow we list the same directory contents using lss, which will find the sequences and display them in the default compressed format. :
$ lss tests/files/z1*
4 z1_001_v1.%d.png [1-4]
4 z1_002_v1.%d.png [1-4]
4 z1_002_v2.%d.png [1-4]... with a custom format: :
$ lss tests/files/z1* -f "%h%r%t"
z1_001_v1.1-4.png
z1_002_v1.1-4.png
z1_002_v2.1-4.pngCompression, or serialization, of lists of items :
>>> s = Sequence(['file.0001.jpg', 'file.0002.jpg', 'file.0003.jpg'])
>>> print s
file.1-3.jpg
>>> s.append('file.0006.jpg')
>>> print(s.format("%h%p%t %R"))
file.%04d.jpg [1-3, 6]
>>> s.contains('file.0009.jpg')
True
>>> s.contains('file.0009.pic')
FalseUncompression, or deserialization, of compressed sequences strings :
>>> s = uncompress('012_vb_110_v002.1-150.dpx', format="%h%r%t")
>>> len(s)
150
>>> seq = uncompress('./tests/012_vb_110_v001.%04d.png 1-10', format='%h%p%t %r')
>>> print(seq.format('%04l %h%p%t %R'))
10 012_vb_110_v001.%04d.png [1-10]