Skip to main content

A Python library for parsing frame ranges and file sequences commonly used in VFX and Animation applications.

Project description

Fileseq

Documentation Status Build status

A Python library for parsing frame ranges and file sequences commonly used in VFX and Animation applications.

Frame Range Shorthand

Support for:

  • Standard: 1-10
  • Comma Delimited: 1-10,10-20
  • Chunked: 1-100x5
  • Filled: 1-100y5
  • Staggered: 1-100:3 (1-100x3, 1-100x2, 1-100)
  • Negative frame numbers: -10-100
  • Subframes: 1001-1066x0.25, 1001.5-1066.0x0.5
  • Padding: #=4 padded, @=1 padded
  • Alternate padding: #=1 padded, @=1 padded
  • Printf Syntax Padding: %04d=4 padded, %01d=1 padded
  • Houdini Syntax Padding: $F4=4 padding, $F=1 padded
  • Udim Syntax Padding: or %(UDIM)d, always 4 padded

FrameSets

A FrameSet wraps a sequence of frames in a list container.

Iterate a FrameSet

fs = fileseq.FrameSet("1-5")
for f in fs:
  print(f)

Access Frames

Using Indices:

>>> fs = fileseq.FrameSet("1-100:8")
>>> fs[0] # First frame.
1
>>> fs[-1] # Last frame.
98

Using Convenience Methods:

>>> fs = fileseq.FrameSet("1-100:8")
>>> fs.start() # First frame.
1
>>> fs.end() # Last frame.
98

FileSequence

Instantiate from String

fileseq.FileSequence("/foo/bar.1-10#.exr")
fileseq.FileSequence("/foo/bar.1-10x0.25#.#.exr", allow_subframes=True)

Format Path for VFX Software

Using FileSequence.format Method:

>>> seq = fileseq.FileSequence("/foo/bar.1-10#.exr")
>>> seq.format(template='{dirname}{basename}{padding}{extension}') 
"/foo/bar.#.exr"
>>> seq = fileseq.FileSequence("/foo/bar.1-10#.#.exr", allow_subframes=True)
>>> seq.format(template='{dirname}{basename}{padding}{extension}')
"/foo/bar.#.#.exr"

Joining:

>>> seq = fileseq.FileSequence("/foo/bar.1-10#.exr")
>>> ''.join([seq.dirname(), seq.basename(), '%0{}d'.format(len(str(seq.end()))), seq.extension()])
"/foo/bar.%02d.exr"

Alternate Padding Styles:

>>> seq = fileseq.FileSequence("/foo/bar.1-10#.exr", pad_style=fileseq.PAD_STYLE_HASH1)
>>> list(seq)
['/foo/bar.1.exr',
 '/foo/bar.2.exr',
 '/foo/bar.3.exr',
 '/foo/bar.4.exr',
 '/foo/bar.5.exr',
 '/foo/bar.6.exr',
 '/foo/bar.7.exr',
 '/foo/bar.8.exr',
 '/foo/bar.9.exr',
 '/foo/bar.10.exr']
>>> seq = fileseq.FileSequence("/foo/bar.1-10#.exr", pad_style=fileseq.PAD_STYLE_HASH4)
>>> list(seq)
['/foo/bar.0001.exr',
 '/foo/bar.0002.exr',
 '/foo/bar.0003.exr',
 '/foo/bar.0004.exr',
 '/foo/bar.0005.exr',
 '/foo/bar.0006.exr',
 '/foo/bar.0007.exr',
 '/foo/bar.0008.exr',
 '/foo/bar.0009.exr',
 '/foo/bar.0010.exr']

Get List of File Paths

>>> seq = fileseq.FileSequence("/foo/bar.1-10#.exr")
>>> [seq[idx] for idx, fr in enumerate(seq.frameSet())]
['/foo/bar.0001.exr',
 '/foo/bar.0002.exr',
 '/foo/bar.0003.exr',
 '/foo/bar.0004.exr',
 '/foo/bar.0005.exr',
 '/foo/bar.0006.exr',
 '/foo/bar.0007.exr',
 '/foo/bar.0008.exr',
 '/foo/bar.0009.exr',
 '/foo/bar.0010.exr']

Finding Sequences on Disk

Check a Directory for All Existing Sequences

seqs = fileseq.findSequencesOnDisk("/show/shot/renders/bty_foo/v1")

Check a Directory for One Existing Sequence.

  • Use a '@' or '#' where you might expect to use '*' for a wildcard character.
  • For this method, it doesn't matter how many instances of the padding character you use, it will still find your sequence.

Yes:

fileseq.findSequenceOnDisk('/foo/bar.@.exr')

Yes:

fileseq.findSequenceOnDisk('/foo/bar.@@@@@.exr')

No:

fileseq.findSequenceOnDisk('/foo/bar.*.exr')
  • To find subframe sequences you must explicitly opt-in
fileseq.findSequenceOnDisk('/foo/bar.#.#.exr', allow_subframes=True)

Limitations

While there may be many custom types of sequence patterns that could be considered a valid pipeline format, this library has taken an opinionated stance on acceptable sequence formats. This is done to keep parsing rules manageable and to not over-complicate the logic. The parsing rules can and have been expanded in some ways over time, such as adding support for new padding format patterns like printf "%04d", houdini "$F" and "". But other rules remain the same, such as expecting a frame number component to be found just before the file extension component.

Language Ports

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

fileseq-2.1.2.tar.gz (58.6 kB view details)

Uploaded Source

Built Distribution

Fileseq-2.1.2-py3-none-any.whl (35.4 kB view details)

Uploaded Python 3

File details

Details for the file fileseq-2.1.2.tar.gz.

File metadata

  • Download URL: fileseq-2.1.2.tar.gz
  • Upload date:
  • Size: 58.6 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/5.1.1 CPython/3.12.7

File hashes

Hashes for fileseq-2.1.2.tar.gz
Algorithm Hash digest
SHA256 f1d844d62ad017821d0188110d36f3b93ae9996782f0e890cb64419644e469f2
MD5 41d3b65eabb51501e47d590244ac2c1f
BLAKE2b-256 c00c287ea1dc397c8c0b66d58d205e97751a365f79af47f7678d4c06ae4fdb6a

See more details on using hashes here.

File details

Details for the file Fileseq-2.1.2-py3-none-any.whl.

File metadata

  • Download URL: Fileseq-2.1.2-py3-none-any.whl
  • Upload date:
  • Size: 35.4 kB
  • Tags: Python 3
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/5.1.1 CPython/3.12.7

File hashes

Hashes for Fileseq-2.1.2-py3-none-any.whl
Algorithm Hash digest
SHA256 b5d599b0bff72f0b82d31a465b3f6b28ef4d20fa097bb7ff4d1a047efe913932
MD5 cf7cde2af2320c83231417bde153d49e
BLAKE2b-256 e00a84f2f7799ff6f4a2c6386f5465c6a3c469f1446aa3ba92f311a5f5db2230

See more details on using hashes here.

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page