How to include dependencies from venv directory when running pyinstaller for project built in Pycharm?

I'm new to Python and PyCharm. I'm running on OSX High Sierra.

I've created a project in PyCharm that uses lxml. I've installed lxml 4.1.1 as a project dependency, and I can see it's files under myProject/venv/lib/site-package/lxml

I can run my script from within PyCharm no problem, but I've been unable to build an executable that includes the lxml library.

I use pyinstaller 3.3.1 from the command line. The project builds, but when I run the executable, I get his for output:

Traceback (most recent call last): File "analyze.py", line 13, in ImportError: No module named lxml [4222] Failed to execute script analyze

I've been looking for some command line switch that tells pyinstaller to include dependencies under the venv directory, with no luck.

Any help would be much appreciated...

Here is my build command and output:

pyinstaller --clean --onefile analyze.py
51 INFO: PyInstaller: 3.3.1
51 INFO: Python: 2.7.10
60 INFO: Platform: Darwin-17.4.0-x86_64-i386-64bit
60 INFO: wrote /Users/gludwig/PycharmProjects/XML_Analyzer/analyze.spec
66 INFO: UPX is not available.
66 INFO: Removing temporary files and cleaning cache in /Users/gludwig/Library/Application Support/pyinstaller
76 INFO: Extending PYTHONPATH with paths
['/Users/gludwig/PycharmProjects/XML_Analyzer',
 '/Users/gludwig/PycharmProjects/XML_Analyzer']
76 INFO: checking Analysis
76 INFO: Building Analysis because out00-Analysis.toc is non existent
76 INFO: Initializing module dependency graph...
79 INFO: Initializing module graph hooks...
130 INFO: running Analysis out00-Analysis.toc
138 INFO: Caching module hooks...
141 INFO: Analyzing /Users/gludwig/PycharmProjects/XML_Analyzer/analyze.py
2363 INFO: Loading module hooks...
2364 INFO: Loading module hook "hook-httplib.py"...
2364 INFO: Loading module hook "hook-encodings.py"...
2874 INFO: Looking for ctypes DLLs
2874 INFO: Analyzing run-time hooks ...
2879 INFO: Looking for dynamic libraries
2995 INFO: Looking for eggs
2995 INFO: Using Python library /System/Library/Frameworks/Python.framework/Versions/2.7/Python
2996 INFO: Warnings written to /Users/gludwig/PycharmProjects/XML_Analyzer/build/analyze/warnanalyze.txt
3009 INFO: Graph cross-reference written to /Users/gludwig/PycharmProjects/XML_Analyzer/build/analyze/xref-analyze.html
3087 INFO: checking PYZ
3087 INFO: Building PYZ because out00-PYZ.toc is non existent
3087 INFO: Building PYZ (ZlibArchive) /Users/gludwig/PycharmProjects/XML_Analyzer/build/analyze/out00-PYZ.pyz
3331 INFO: Building PYZ (ZlibArchive) /Users/gludwig/PycharmProjects/XML_Analyzer/build/analyze/out00-PYZ.pyz completed successfully.
3403 INFO: checking PKG
3403 INFO: Building PKG because out00-PKG.toc is non existent
3403 INFO: Building PKG (CArchive) out00-PKG.pkg
5669 INFO: Building PKG (CArchive) out00-PKG.pkg completed successfully.
5685 INFO: Bootloader /Users/gludwig/Library/Python/2.7/lib/python/site-packages/PyInstaller/bootloader/Darwin-64bit/run
5685 INFO: checking EXE
5685 INFO: Building EXE because out00-EXE.toc is non existent
5685 INFO: Building EXE from out00-EXE.toc
5686 INFO: Appending archive to EXE /Users/gludwig/PycharmProjects/XML_Analyzer/dist/analyze
5703 INFO: Fixing EXE for code signing /Users/gludwig/PycharmProjects/XML_Analyzer/dist/analyze
5716 INFO: Building EXE from out00-EXE.toc completed successfully.

Further, pyinstaller produces a warning file under build, and it contains the following:

missing module named org - imported by copy
missing module named _sha512 - imported by hashlib
missing module named _sha256 - imported by hashlib
missing module named _md5 - imported by hashlib
missing module named _sha - imported by hashlib
missing module named 'org.python' - imported by pickle
missing module named _subprocess - imported by subprocess
missing module named msvcrt - imported by subprocess, getpass
missing module named riscosenviron - imported by os
missing module named riscospath - imported by os
missing module named riscos - imported by os
missing module named ce - imported by os
missing module named _emx_link - imported by os
missing module named os2 - imported by os
missing module named nt - imported by os, ntpath
missing module named _winreg - imported by mimetypes, urllib
missing module named OverrideFrom23 - imported by Carbon.Res
missing module named SOCKS - imported by ftplib
missing module named rourl2path - imported by urllib
missing module named lxml - imported by /Users/gludwig/PycharmProjects/XML_Analyzer/analyze.py

I've also tried supplying paths for the library entries in venv to pyinstaller in this way:

pyi-makespec --paths=~/PycharmProjects/XML_Analyzer \ paths=~/PycharmProjects/XML_Analyzer/venv/lib/python2.7/sitepackages/lxml analyze.py pyinstaller --onefile analyze.py

It didn't help.