prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Bug: broken import from augmentations
  Hi I installed the latest pip version of lhotse and I am getting an import error when using the lhotse CLI:
  
  Setup:
  ```
  python3.7.0 
  lhotse==0.2.0
  ```
  
  To reproduce, try either from the following lines:
  ```
  lhotse convert-kaldi <data-dir> 16000 <other-data-dir>
  python -c "from lhotse.augmentation import available_wav_augmentations"
  ```
  
  </issue>
  <code>
  [start of lhotse/augmentation/__init__.py]
  1 from .common import AugmentFn
  2 from .torchaudio import *
  3 from .wavaugment import WavAugmenter, is_wav_augment_available
  4
  [end of lhotse/augmentation/__init__.py]
  [start of setup.py]
  1 # coding=utf-8
  2 import os
  3 from pathlib import Path
  4 
  5 from setuptools import find_packages, setup
  6 
  7 project_root = Path(__file__).parent
  8 
  9 install_requires = (project_root / 'requirements.txt').read_text().splitlines()
  10 docs_require = (project_root / 'docs' / 'requirements.txt').read_text().splitlines()
  11 tests_require = ['pytest==5.4.3', 'flake8==3.8.3', 'coverage==5.1', 'hypothesis==5.41.2']
  12 dev_requires = docs_require + tests_require + ['jupyterlab', 'matplotlib', 'isort']
  13 
  14 if os.environ.get('READTHEDOCS', False):
  15     # When building documentation, omit torchaudio installation and mock it instead.
  16     # This works around the inability to install libsoundfile1 in read-the-docs env,
  17     # which caused the documentation builds to silently crash.
  18     install_requires = [req for req in install_requires if not req.startswith('torchaudio')]
  19 
  20 setup(
  21     name='lhotse',
  22     version='0.2.0',
  23     python_requires='>=3.7.0',
  24     description='Data preparation for speech processing models training.',
  25     author='The Lhotse Development Team',
  26     author_email="pzelasko@jhu.edu",
  27     long_description=(project_root / 'README.md').read_text(),
  28     long_description_content_type="text/markdown",
  29     license='Apache-2.0 License',
  30     packages=find_packages(),
  31     # The line below makes every script in the list an executable that's inserted in PATH
  32     # as long as the virtualenv/conda env is active; they can be used like any other shell program
  33     scripts=['lhotse/bin/lhotse'],
  34     install_requires=install_requires,
  35     extras_require={
  36         'docs': docs_require,
  37         'tests': tests_require,
  38         'dev': docs_require + tests_require
  39     },
  40     classifiers=[
  41         "Development Status :: 3 - Alpha",
  42         "Programming Language :: Python :: 3.7",
  43         "Programming Language :: Python :: 3.8",
  44         "Intended Audience :: Science/Research",
  45         "Operating System :: POSIX :: Linux",
  46         "Operating System :: MacOS :: MacOS X",
  47         "License :: OSI Approved :: Apache Software License",
  48         "Topic :: Multimedia :: Sound/Audio :: Speech",
  49         "Topic :: Scientific/Engineering :: Artificial Intelligence",
  50         "Topic :: Software Development :: Libraries :: Python Modules",
  51         "Typing :: Typed"
  52     ],
  53 )
  54
  [end of setup.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/lhotse/augmentation/__init__.py b/lhotse/augmentation/__init__.py
  --- a/lhotse/augmentation/__init__.py
  +++ b/lhotse/augmentation/__init__.py
  @@ -1,3 +1,3 @@
   from .common import AugmentFn
   from .torchaudio import *
  -from .wavaugment import WavAugmenter, is_wav_augment_available
  +from .wavaugment import WavAugmenter, is_wav_augment_available, available_wav_augmentations
  diff --git a/setup.py b/setup.py
  --- a/setup.py
  +++ b/setup.py
  @@ -19,7 +19,7 @@
   
   setup(
       name='lhotse',
  -    version='0.2.0',
  +    version='0.2.1',
       python_requires='>=3.7.0',
       description='Data preparation for speech processing models training.',
       author='The Lhotse Development Team',
  
verification_info: {"golden_diff": "diff --git a/lhotse/augmentation/__init__.py b/lhotse/augmentation/__init__.py\n--- a/lhotse/augmentation/__init__.py\n+++ b/lhotse/augmentation/__init__.py\n@@ -1,3 +1,3 @@\n from .common import AugmentFn\n from .torchaudio import *\n-from .wavaugment import WavAugmenter, is_wav_augment_available\n+from .wavaugment import WavAugmenter, is_wav_augment_available, available_wav_augmentations\ndiff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -19,7 +19,7 @@\n \n setup(\n     name='lhotse',\n-    version='0.2.0',\n+    version='0.2.1',\n     python_requires='>=3.7.0',\n     description='Data preparation for speech processing models training.',\n     author='The Lhotse Development Team',\n", "issue": "Bug: broken import from augmentations\nHi I installed the latest pip version of lhotse and I am getting an import error when using the lhotse CLI:\r\n\r\nSetup:\r\n```\r\npython3.7.0 \r\nlhotse==0.2.0\r\n```\r\n\r\nTo reproduce, try either from the following lines:\r\n```\r\nlhotse convert-kaldi <data-dir> 16000 <other-data-dir>\r\npython -c \"from lhotse.augmentation import available_wav_augmentations\"\r\n```\n", "before_files": [{"content": "from .common import AugmentFn\nfrom .torchaudio import *\nfrom .wavaugment import WavAugmenter, is_wav_augment_available\n", "path": "lhotse/augmentation/__init__.py"}, {"content": "# coding=utf-8\nimport os\nfrom pathlib import Path\n\nfrom setuptools import find_packages, setup\n\nproject_root = Path(__file__).parent\n\ninstall_requires = (project_root / 'requirements.txt').read_text().splitlines()\ndocs_require = (project_root / 'docs' / 'requirements.txt').read_text().splitlines()\ntests_require = ['pytest==5.4.3', 'flake8==3.8.3', 'coverage==5.1', 'hypothesis==5.41.2']\ndev_requires = docs_require + tests_require + ['jupyterlab', 'matplotlib', 'isort']\n\nif os.environ.get('READTHEDOCS', False):\n    # When building documentation, omit torchaudio installation and mock it instead.\n    # This works around the inability to install libsoundfile1 in read-the-docs env,\n    # which caused the documentation builds to silently crash.\n    install_requires = [req for req in install_requires if not req.startswith('torchaudio')]\n\nsetup(\n    name='lhotse',\n    version='0.2.0',\n    python_requires='>=3.7.0',\n    description='Data preparation for speech processing models training.',\n    author='The Lhotse Development Team',\n    author_email=\"pzelasko@jhu.edu\",\n    long_description=(project_root / 'README.md').read_text(),\n    long_description_content_type=\"text/markdown\",\n    license='Apache-2.0 License',\n    packages=find_packages(),\n    # The line below makes every script in the list an executable that's inserted in PATH\n    # as long as the virtualenv/conda env is active; they can be used like any other shell program\n    scripts=['lhotse/bin/lhotse'],\n    install_requires=install_requires,\n    extras_require={\n        'docs': docs_require,\n        'tests': tests_require,\n        'dev': docs_require + tests_require\n    },\n    classifiers=[\n        \"Development Status :: 3 - Alpha\",\n        \"Programming Language :: Python :: 3.7\",\n        \"Programming Language :: Python :: 3.8\",\n        \"Intended Audience :: Science/Research\",\n        \"Operating System :: POSIX :: Linux\",\n        \"Operating System :: MacOS :: MacOS X\",\n        \"License :: OSI Approved :: Apache Software License\",\n        \"Topic :: Multimedia :: Sound/Audio :: Speech\",\n        \"Topic :: Scientific/Engineering :: Artificial Intelligence\",\n        \"Topic :: Software Development :: Libraries :: Python Modules\",\n        \"Typing :: Typed\"\n    ],\n)\n", "path": "setup.py"}]}