Merge branch 'master' into release

3.6 isn't supported by the github actions anymore.

.github/workflows/python-package.yml

@@ -0,0 +1,41 @@
+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
+
+name: Lint and Test
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4.3.0
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install flake8 pytest
+        python3 -m pip install -e .
+        # if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+    - name: Lint with flake8
+      run: |
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+    - name: Test with pytest
+      run: |
+        pytest

.github/workflows/pythonpublish.yml

@@ -0,0 +1,36 @@
+name: Upload Python Package
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python
+      uses: actions/setup-python@v1
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install setuptools wheel twine
+    - name: Build and publish
+      env:
+        TWINE_USERNAME: __token__
+        TWINE_PASSWORD: ${{ secrets.PYPI_APIKEY }}
+      run: |
+        python setup.py sdist bdist_wheel
+        twine upload dist/*
+    - name: Report to Mastodon
+      uses: cbrgm/mastodon-github-action@v1.0.1
+      with:
+        message: |
+          I just released a new version of pycmx, my library for reading CMX EDLs!
+          #sounddesign #filmmaking #python
+          ${{ github.server_url }}/${{ github.repository }}
+      env:
+        MASTODON_URL: ${{ secrets.MASTODON_URL }}
+        MASTODON_ACCESS_TOKEN: ${{ secrets.MASTODON_ACCESS_TOKEN }}

.gitignore

@@ -10,3 +10,13 @@
 
 # Vim Swapfiles
 *.swp
+.DS_Store
+
+venv/
+
+.coverage
+lcov.info
+
+
+# venv
+venv/

.travis.yml

@@ -1,7 +0,0 @@
-language: python
-python:
-  - "3.6"
-script:
-  - "python3 setup.py test"
-install:
-  - "pip3 install setuptools"

CONTRIBUTING.md

@@ -0,0 +1,13 @@
+# Contributing
+
+Contributions to this project are welcome!
+
+The best way to contribute code to this project is to find this project on [Github][github] and submit a pull request.
+
+## Call for EDLs
+
+If you have EDLs you are having trouble working with becuase of unusual formatting, please send me a copy! Contact us
+through [Github].
+
+
+[github]: https://github.com/iluvcapra/pycmx

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2018 Jamie Hardt.
+Copyright (c) 2022 Jamie Hardt.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,4 +1,6 @@
-[![Build Status](https://travis-ci.com/iluvcapra/pycmx.svg?branch=master)](https://travis-ci.com/iluvcapra/pycmx) [![Documentation Status](https://readthedocs.org/projects/pycmx/badge/?version=latest)](https://pycmx.readthedocs.io/en/latest/?badge=latest)
+[![Documentation Status](https://readthedocs.org/projects/pycmx/badge/?version=latest)](https://pycmx.readthedocs.io/en/latest/?badge=latest) ![](https://img.shields.io/github/license/iluvcapra/pycmx.svg) ![](https://img.shields.io/pypi/pyversions/pycmx.svg) [![](https://img.shields.io/pypi/v/pycmx.svg)](https://pypi.org/project/pycmx/) ![](https://img.shields.io/pypi/wheel/pycmx.svg)
+![GitHub last commit](https://img.shields.io/github/last-commit/iluvcapra/pycmx)
+[![Lint and Test](https://github.com/iluvcapra/pycmx/actions/workflows/python-package.yml/badge.svg)](https://github.com/iluvcapra/pycmx/actions/workflows/python-package.yml)
 
 
 # pycmx
@@ -82,32 +84,4 @@ Audio channel 7 is present
 False
 ```
 
-## How is this different from `python-edl`?
 
-There are two important differences between `import edl` and `import pycmx` 
-and motivated my development of this module.
-
-1. The `pycmx` parser doesn't take timecode or framerates into account, 
-   and strictly treats timecodes like opaque values. As far as `pycmx` is 
-   concerend, they're just strings. This was done because in my experience, 
-   the frame rate of an EDL is often difficult to precisely determine and 
-   often the frame rate of various sources is different from the frame rate 
-   of the target track.
-   
-   In any event, timecodes in an EDL are a kind of *address* and are not
-   exactly scalar, they're meant to point to a particular block of video or 
-   audio data on a medium and presuming that they refer to a real time, or 
-   duration, or are convertible, etc. isn't always safe.
-
-2. The `pycmx` parser reads event numbers and keeps track of which EDL rows
-   are meant to happen "at the same time," with two decks. This makes it 
-   easier to reconstruct transition A/B clips, and read clip names from
-   such events appropriately.
- 
-## Should I Use This?
-
-At this time, this is (at best) beta software. I feel like the interface is 
-about where where I'd like it to be but more testing is required.
-
-Contributions are welcome and will make this module production-ready all the
-faster! Please reach out or file a ticket! 

docs/make.bat

@@ -1,35 +0,0 @@
-@ECHO OFF
-
-pushd %~dp0
-
-REM Command file for Sphinx documentation
-
-if "%SPHINXBUILD%" == "" (
-	set SPHINXBUILD=sphinx-build
-)
-set SOURCEDIR=source
-set BUILDDIR=build
-
-if "%1" == "" goto help
-
-%SPHINXBUILD% >NUL 2>NUL
-if errorlevel 9009 (
-	echo.
-	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
-	echo.installed, then set the SPHINXBUILD environment variable to point
-	echo.to the full path of the 'sphinx-build' executable. Alternatively you
-	echo.may add the Sphinx directory to PATH.
-	echo.
-	echo.If you don't have Sphinx installed, grab it from
-	echo.http://sphinx-doc.org/
-	exit /b 1
-)
-
-%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS%
-goto end
-
-:help
-%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS%
-
-:end
-popd

docs/source/classes.rst

@@ -0,0 +1,24 @@
+pycmx Classes
+=============
+
+.. autoclass:: pycmx.edit_list.EditList 
+   :members:
+
+
+.. autoclass:: pycmx.event.Event 
+   :members:
+
+
+.. autoclass:: pycmx.edit.Edit  
+   :members:
+
+
+.. autoclass:: pycmx.transition.Transition
+   :members:
+
+
+.. autoclass:: pycmx.channel_map.ChannelMap
+   :members:
+
+
+

docs/source/conf.py

@@ -14,13 +14,13 @@
 #
 import os
 import sys
-sys.path.insert(0, os.path.abspath('../../pycmx'))
-
+sys.path.insert(0, os.path.abspath('../..'))
+print(sys.path)
 
 # -- Project information -----------------------------------------------------
 
 project = u'pycmx'
-copyright = u'2018, Jamie Hardt'
+copyright = u'2022, Jamie Hardt'
 author = u'Jamie Hardt'
 
 # The short X.Y version
@@ -63,7 +63,7 @@ master_doc = 'index'
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = 'em'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.

docs/source/function.rst

@@ -0,0 +1,7 @@
+Parse Function
+==============
+
+
+.. autofunction:: pycmx.parse_cmx_events.parse_cmx3600
+
+

docs/source/index.rst

@@ -8,13 +8,13 @@ Welcome to pycmx's documentation!
 
 .. toctree::
    :maxdepth: 5
-   :caption: API Reference:
-   
-   pycmx
+   :caption: API Reference
+
+   function
+   classes
 
 Indices and tables
 ==================
 
 * :ref:`genindex`
-* :ref:`modindex`
 * :ref:`search`

docs/source/modules.rst

@@ -1,7 +0,0 @@
-pycmx
-=====
-
-.. toctree::
-   :maxdepth: 4
-
-   pycmx

docs/source/pycmx.rst

@@ -1,46 +0,0 @@
-pycmx package
-=============
-
-Submodules
-----------
-
-pycmx.channel\_map module
--------------------------
-
-.. automodule:: pycmx.channel_map
-    :members:
-    :undoc-members:
-    :show-inheritance:
-
-pycmx.parse\_cmx\_events module
--------------------------------
-
-.. automodule:: pycmx.parse_cmx_events
-    :members:
-    :undoc-members:
-    :show-inheritance:
-
-pycmx.parse\_cmx\_statements module
------------------------------------
-
-.. automodule:: pycmx.parse_cmx_statements
-    :members:
-    :undoc-members:
-    :show-inheritance:
-
-pycmx.util module
------------------
-
-.. automodule:: pycmx.util
-    :members:
-    :undoc-members:
-    :show-inheritance:
-
-
-Module contents
----------------
-
-.. automodule:: pycmx
-    :members:
-    :undoc-members:
-    :show-inheritance:

pycmx/__init__.py

@@ -1,17 +1,16 @@
 # -*- coding: utf-8 -*-
 """
-pycmx is a module for parsing CMX 3600-style EDLs. For more information and 
+pycmx is a module for parsing CMX 3600-style EDLs. For more information and
 examples see README.md
 
-This module (c) 2018 Jamie Hardt. For more information on your rights to 
-copy and reuse this software, refer to the LICENSE file included with the 
+This module (c) 2022 Jamie Hardt. For more information on your rights to
+copy and reuse this software, refer to the LICENSE file included with the
 distribution.
 """
 
-__version__ = '0.8'
-__author__  = 'Jamie Hardt'
+__version__ = '1.2.0'
 
-from .parse_cmx_events import parse_cmx3600 
+from .parse_cmx_events import parse_cmx3600
 from .transition import Transition
 from .event import Event
 from .edit import Edit

pycmx/channel_map.py

@@ -2,13 +2,14 @@
 # (c) 2018 Jamie Hardt
 
 from re import (compile, match)
+from typing import Dict, Tuple
 
 class ChannelMap:
     """
     Represents a set of all the channels to which an event applies.
     """
 
-    _chan_map = {     
+    _chan_map : Dict[str, Tuple] = {     
                 "V" :    (True,   False,   False),
                 "A" :    (False,  True,    False),
                 "A2" :   (False,  False,   True),
@@ -27,6 +28,11 @@ class ChannelMap:
         'True if video is included'
         return self.v
 
+    @property
+    def audio(self):
+        'True if an audio channel is included'
+        return len(self._audio_channel_set) > 0
+
     @property
     def channels(self):
         'A generator for each audio channel'
@@ -35,7 +41,7 @@ class ChannelMap:
 
     @property
     def a1(self):
-        """True if A1 is included."""
+        """True if A1 is included"""
         return self.get_audio_channel(1)
 
     @a1.setter
@@ -44,7 +50,7 @@ class ChannelMap:
 
     @property
     def a2(self):
-        """True if A2 is included."""
+        """True if A2 is included"""
         return self.get_audio_channel(2)
 
     @a2.setter
@@ -53,7 +59,7 @@ class ChannelMap:
 
     @property
     def a3(self):
-        """True if A3 is included."""
+        """True if A3 is included"""
         return self.get_audio_channel(3)
 
     @a3.setter
@@ -62,7 +68,7 @@ class ChannelMap:
     
     @property
     def a4(self):
-        """True if A4 is included."""
+        """True if A4 is included"""
         return self.get_audio_channel(4)
 
     @a4.setter
@@ -70,18 +76,18 @@ class ChannelMap:
         self.set_audio_channel(4,val)
 
     def get_audio_channel(self,chan_num):
-        """True if chan_num is included."""
+        """True if chan_num is included"""
         return (chan_num in self._audio_channel_set)
 
     def set_audio_channel(self,chan_num,enabled):
-        """If enabled is true, chan_num will be included."""
+        """If enabled is true, chan_num will be included"""
         if enabled:
             self._audio_channel_set.add(chan_num)
         elif self.get_audio_channel(chan_num):
             self._audio_channel_set.remove(chan_num)
     
     def _append_event(self, event_str):
-        alt_channel_re = compile('^A(\d+)')
+        alt_channel_re = compile(r'^A(\d+)')
         if event_str in self._chan_map:
             channels = self._chan_map[event_str]
             self.v = channels[0]
@@ -93,6 +99,15 @@ class ChannelMap:
                 self.set_audio_channel(int( matchresult.group(1)), True )
 
     def _append_ext(self, audio_ext):
-        self.a3 = ext.audio3
-        self.a4 = ext.audio4
+        self.a3 = audio_ext.audio3
+        self.a4 = audio_ext.audio4
+
+    def __or__(self, other):
+        """
+        the logical union of this channel map with another
+        """
+        out_v = self.video | other.video
+        out_a = self._audio_channel_set | other._audio_channel_set
+
+        return ChannelMap(v=out_v,audio_channels = out_a)
 

pycmx/edit_list.py

@@ -1,8 +1,9 @@
 # pycmx
 # (c) 2018 Jamie Hardt
 
-from .parse_cmx_statements import (StmtUnrecognized, StmtFCM, StmtEvent)
+from .parse_cmx_statements import (StmtUnrecognized, StmtFCM, StmtEvent, StmtSourceUMID)
 from .event import Event
+from .channel_map import ChannelMap
 
 class EditList:
     """
@@ -13,13 +14,47 @@ class EditList:
         self.title_statement = statements[0]
         self.event_statements = statements[1:]
 
+    
+    @property
+    def format(self):
+        """
+        The detected format of the EDL. Possible values are: `3600`,`File32`,
+        `File128`, and `unknown`
+        """
+        first_event = next( (s for s in self.event_statements if type(s) is StmtEvent), None)
+
+        if first_event:
+            if first_event.format == 8:
+                return '3600'
+            elif first_event.format == 32:
+                return 'File32'
+            elif first_event.format == 128:
+                return 'File128'
+            else:
+                return 'unknown'
+        else:
+            return 'unknown'
+        
+
+    @property
+    def channels(self):
+        """
+        Return the union of every channel channel.
+        """
+
+        retval = ChannelMap()
+        for event in self.events:
+            for edit in event.edits:
+                retval = retval | edit.channels
+
+        return retval
+        
+
     @property
     def title(self):
         """
-        The title of this edit list, as attensted by the 'TITLE:' statement on 
-        the first line.
+        The title of this edit list.
         """
-        'The title of the edit list'
         return self.title_statement.title
 
     
@@ -54,8 +89,21 @@ class EditList:
                     else:
                         event_statements.append(stmt)
 
+            elif type(stmt) is StmtSourceUMID:
+                break
             else:
                 event_statements.append(stmt)
 
         yield Event(statements=event_statements)
 
+    @property
+    def sources(self):
+        """
+        A generator for all of the sources in the list
+        """
+        
+        for stmt in self.event_statements:
+            if type(stmt) is StmtSourceUMID:
+                yield stmt
+
+

pycmx/parse_cmx_events.py

@@ -14,7 +14,7 @@ def parse_cmx3600(f):
         f : a file-like object, anything that's readlines-able.
 
     Returns:
-        An :class:`EditList`.
+        An :class:`pycmx.edit_list.EditList`.
     """
     statements = parse_cmx3600_statements(f)
     return EditList(statements)

pycmx/parse_cmx_statements.py

@@ -11,13 +11,13 @@ from .util import collimate
 StmtTitle =     namedtuple("Title",["title","line_number"])
 StmtFCM =       namedtuple("FCM",["drop","line_number"])
 StmtEvent =     namedtuple("Event",["event","source","channels","trans",\
-        "trans_op","source_in","source_out","record_in","record_out","line_number"])
+        "trans_op","source_in","source_out","record_in","record_out","format","line_number"])
 StmtAudioExt =  namedtuple("AudioExt",["audio3","audio4","line_number"])
 StmtClipName =  namedtuple("ClipName",["name","affect","line_number"])
 StmtSourceFile = namedtuple("SourceFile",["filename","line_number"])
 StmtRemark =    namedtuple("Remark",["text","line_number"])
 StmtEffectsName = namedtuple("EffectsName",["name","line_number"])
-StmtTrailer =   namedtuple("Trailer",["text","line_number"])
+StmtSourceUMID =   namedtuple("Source",["name","umid","line_number"])
 StmtSplitEdit = namedtuple("SplitEdit",["video","magnitue", "line_number"])
 StmtMotionMemory = namedtuple("MotionMemory",["source","fps"]) # FIXME needs more fields
 StmtUnrecognized = namedtuple("Unrecognized",["content","line_number"])
@@ -69,8 +69,8 @@ def _parse_cmx3600_line(line, line_number):
             return _parse_extended_audio_channels(line,line_number)
         elif line.startswith("*"):
             return _parse_remark( line[1:].strip(), line_number)
-        elif line.startswith(">>>"):
-            return _parse_trailer_statement(line, line_number)
+        elif line.startswith(">>> SOURCE"):
+            return _parse_source_umid_statement(line, line_number)
         elif line.startswith("EFFECTS NAME IS"):
             return _parse_effects_name(line, line_number)
         elif line.startswith("SPLIT:"):
@@ -157,10 +157,11 @@ def _parse_columns_for_standard_form(line, event_field_length, source_field_leng
                      source_out=column_strings[12].strip(),
                      record_in=column_strings[14].strip(),
                      record_out=column_strings[16].strip(),
-		    line_number=line_number)
+		    line_number=line_number,
+                    format=source_field_length)
 
 
-def _parse_trailer_statement(line, line_number):
+def _parse_source_umid_statement(line, line_number):
     trimmed = line[3:].strip()
-    return StmtTrailer(trimmed, line_number=line_number)
+    return StmtSourceUMID(name=None, umid=None, line_number=line_number)
 

pycmx/transition.py

@@ -70,12 +70,12 @@ class Transition:
     @property
     def key_background(self):
         "`True` if this edit is a key background."
-        return self.transition == KeyBackground
+        return self.transition == Transition.KeyBackground
 
     @property
     def key_foreground(self):
         "`True` if this edit is a key foreground."
-        return self.transition == Key
+        return self.transition == Transition.Key
 
     @property
     def key_out(self):
@@ -83,4 +83,4 @@ class Transition:
         `True` if this edit is a key out. This material will removed from
         the key foreground and replaced with the key background.
         """
-        return self.transition == KeyOut
+        return self.transition == Transition.KeyOut

pyproject.toml

@@ -0,0 +1,60 @@
+[build-system]
+requires = ["flit_core >=3.2,<4"]
+build-backend = "flit_core.buildapi"
+
+[project]
+name = "pycmx"
+authors = [{name = "Jamie Hardt", email = "jamiehardt@me.com"}]
+readme = "README.md"
+dynamic = ["version", "description"]
+requires-python = "~=3.7"
+classifiers = [
+  'Development Status :: 5 - Production/Stable',
+  'License :: OSI Approved :: MIT License',
+  'Topic :: Multimedia',
+  'Topic :: Multimedia :: Video',
+  'Topic :: Text Processing',
+  'Programming Language :: Python :: 3.7',
+  'Programming Language :: Python :: 3.8',
+  'Programming Language :: Python :: 3.9',
+  'Programming Language :: Python :: 3.10',
+  'Programming Language :: Python :: 3.11'
+]
+dependencies = [
+
+]
+keywords = [
+  'parser',
+  'film', 
+  'broadcast' 
+]
+
+[tool.flit.module]
+name = "pycmx"
+
+[project.optional-dependencies]
+doc = [
+    'sphinx >= 5.3.0',
+    'sphinx_rtd_theme >= 1.1.1',
+]
+
+[project.urls]
+Home = "https://github.com/iluvcapra/pycmx"
+Documentation = "https://pycmx.readthedocs.io/"
+Source = "https://github.com/iluvcapra/pycmx.git"
+Issues = "https://github.com/iluvcapra/pycmx/issues" 
+
+[tool.pyright]
+typeCheckingMode = "basic"
+
+[tool.pylint]
+max-line-length = 88
+disable = [
+    "C0103", # (invalid-name)
+    "C0114", # (missing-module-docstring)
+    "C0115", # (missing-class-docstring)
+    "C0116", # (missing-function-docstring)
+    "R0903", # (too-few-public-methods)
+    "R0913", # (too-many-arguments)
+    "W0105", # (pointless-string-statement)
+]

setup.py

@@ -1,19 +0,0 @@
-from setuptools import setup
-
-with open("README.md", "r") as fh:
-    long_description = fh.read()
-
-setup(name='pycmx',
-      version='0.8',
-      author='Jamie Hardt',
-      author_email='jamiehardt@me.com',
-      description='CMX 3600 Edit Decision List Parser',
-      long_description_content_type="text/markdown",
-      long_description=long_description,
-      url='https://github.com/iluvcapra/pycmx',
-      classifiers=['Development Status :: 4 - Beta',
-          'License :: OSI Approved :: MIT License',
-          'Topic :: Multimedia',
-          'Topic :: Multimedia :: Video',
-          'Topic :: Text Processing'],
-      packages=['pycmx'])

tests/__init__.py

@@ -0,0 +1 @@
+from . import test_parse

tests/test_parse.py

@@ -18,22 +18,24 @@ class TestParse(TestCase):
         counts = [ 287, 466, 250 , 376, 120 , 3 , 466 ]
 
         for fn, count in zip(type(self).files, counts):
-            with open(f"tests/edls/{fn}" ,'r') as f:
+            with open("tests/edls/" + fn ,'r') as f:
                 edl = pycmx.parse_cmx3600(f)
                 actual = len( list( edl.events ))
-                self.assertTrue( actual == count , f"expected {count} in file {fn} but found {actual}")
+                self.assertTrue( actual == count ,
+                        "expected %i in file %s but found %i" % (count, fn, actual))
 
     def test_list_sanity(self):
         for fn in type(self).files:
-            with open(f"tests/edls/{fn}" ,'r') as f:
+            with open("tests/edls/" + fn ,'r') as f:
                 edl = pycmx.parse_cmx3600(f)
                 self.assertTrue( type(edl.title) is str )
                 self.assertTrue( len(edl.title) > 0 )
-    
+
 
     def test_event_sanity(self):
         for fn in type(self).files:
-            with open(f"tests/edls/{fn}" ,'r') as f:
+            path = "tests/edls/" + fn
+            with open(path ,'r') as f:
                 edl = pycmx.parse_cmx3600(f)
                 for index, event in enumerate(edl.events):
                     self.assertTrue( len(event.edits) > 0 )
@@ -45,7 +47,7 @@ class TestParse(TestCase):
         with open("tests/edls/TEST.edl",'r') as f:
             edl = pycmx.parse_cmx3600(f)
             events = list( edl.events  )
-        
+
             self.assertEqual( events[0].number , 1)
             self.assertEqual( events[0].edits[0].source , "OY_HEAD_")
             self.assertEqual( events[0].edits[0].clip_name , "HEAD LEADER MONO")
@@ -64,6 +66,7 @@ class TestParse(TestCase):
             self.assertFalse( events[0].edits[0].channels.a1)
             self.assertTrue( events[0].edits[0].channels.a2)
             self.assertTrue( events[2].edits[0].channels.get_audio_channel(7) )
+            self.assertTrue( events[2].edits[0].channels.audio)
 
 
     def test_multi_edit_events(self):
@@ -104,3 +107,7 @@ class TestParse(TestCase):
             edl = pycmx.parse_cmx3600(f)
             events = list(edl.events)
             self.assertEqual( events[4].edits[1].transition.name ,  "CROSS DISSOLVE" )
+
+
+    # add test for edit_list.channels
+