我一直在尝试使用命令安装textract： !pip install textract，但是遇到以下错误：
Collecting textract
Requirement already satisfied: docx2txt==0.6 in /home/UGI/akedia/.conda/envs/at3deploy/lib/python3.6/site-packages (from textract) (0.6)
Requirement already satisfied: argcomplete==1.8.2 in /home/UGI/akedia/.conda/envs/at3deploy/lib/python3.6/site-packages (from textract) (1.8.2)
Collecting six==1.10.0 (from textract)
Using cached https://files.pythonhosted.org/packages/c8/0a/b6723e1bc4c516cb687841499455a8505b44607ab535be01091c0f24f079/six-1.10.0-py2.py3-none-any.whl
Collecting EbookLib==0.15 (from textract)
Collecting pocketsphinx==0.1.3 (from textract)
Using cached https://files.pythonhosted.org/packages/93/5f/a968e5d53d25e32deb78c3e169fd8612ecf53cc76e32cb40e19be35696af/pocketsphinx-0.1.3.tar.bz2
Requirement already satisfied: beautifulsoup4==4.5.3 in /home/UGI/akedia/.conda/envs/at3deploy/lib/python3.6/site-packages (from textract) (4.5.3)
Requirement already satisfied: SpeechRecognition==3.6.3 in /home/UGI/akedia/.conda/envs/at3deploy/lib/python3.6/site-packages (from textract) (3.6.3)
Requirement already satisfied: chardet==2.3.0 in /home/UGI/akedia/.conda/envs/at3deploy/lib/python3.6/site-packages (from textract) (2.3.0)
Requirement already satisfied: python-pptx==0.6.5 in /home/UGI/akedia/.conda/envs/at3deploy/lib/python3.6/site-packages (from textract) (0.6.5)
Requirement already satisfied: xlrd==1.0.0 in /home/UGI/akedia/.conda/envs/at3deploy/lib/python3.6/site-packages (from textract) (1.0.0)
Requirement already satisfied: lxml in /home/UGI/akedia/.conda/envs/at3deploy/lib/python3.6/site-packages (from EbookLib==0.15->textract) (4.3.2)
Requirement already satisfied: XlsxWriter>=0.5.7 in /home/UGI/akedia/.conda/envs/at3deploy/lib/python3.6/site-packages (from python-pptx==0.6.5->textract) (1.1.5)
Requirement already satisfied: Pillow>=2.6.1 in /home/UGI/akedia/.conda/envs/at3deploy/lib/python3.6/site-packages (from python-pptx==0.6.5->textract) (5.3.0)
Building wheels for collected packages: pocketsphinx
Building wheel for pocketsphinx (setup.py) ... error
Complete output from command /home/UGI/akedia/.conda/envs/at3deploy/bin/python -u -c "import setuptools, tokenize;__file__='/backup/mltmp/pip-install-k3hazve3/pocketsphinx/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /backup/mltmp/pip-wheel-7t5e7pu4 --python-tag cp36:
running bdist_wheel
running build_ext
building 'sphinxbase._ad' extension
swigging swig/sphinxbase/ad.i to swig/sphinxbase/ad_wrap.c
swig -python -modern -Ideps/sphinxbase/include -Ideps/sphinxbase/include/sphinxbase -Ideps/sphinxbase/include/android -Ideps/sphinxbase/swig -outdir sphinxbase -o swig/sphinxbase/ad_wrap.c swig/sphinxbase/ad.i
unable to execute 'swig': No such file or directory
error: command 'swig' failed with exit status 1
----------------------------------------
Failed building wheel for pocketsphinx
Running setup.py clean for pocketsphinx
Failed to build pocketsphinx
spacy 2.0.12 has requirement regex==2017.4.5, but you'll have regex 2018.7.11 which is incompatible.
Installing collected packages: six, EbookLib, pocketsphinx, textract
Running setup.py install for pocketsphinx ... error
Complete output from command /home/UGI/akedia/.conda/envs/at3deploy/bin/python -u -c "import setuptools, tokenize;__file__='/backup/mltmp/pip-install-k3hazve3/pocketsphinx/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /backup/mltmp/pip-record-ws03agmf/install-record.txt --single-version-externally-managed --compile:
running install
running build_ext
building 'sphinxbase._ad' extension
swigging swig/sphinxbase/ad.i to swig/sphinxbase/ad_wrap.c
swig -python -modern -Ideps/sphinxbase/include -Ideps/sphinxbase/include/sphinxbase -Ideps/sphinxbase/include/android -Ideps/sphinxbase/swig -outdir sphinxbase -o swig/sphinxbase/ad_wrap.c swig/sphinxbase/ad.i
unable to execute 'swig': No such file or directory
error: command 'swig' failed with exit status 1
----------------------------------------
Command "/home/UGI/akedia/.conda/envs/at3deploy/bin/python -u -c "import setuptools, tokenize;__file__='/backup/mltmp/pip-install-k3hazve3/pocketsphinx/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /backup/mltmp/pip-record-ws03agmf/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /backup/mltmp/pip-install-k3hazve3/pocketsphinx/