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multipledispatch ModuleNotFoundError running from command-line

Running a locust (locust.io) script from the command line.
locust calls main.py which has the following imports:
from locust import HttpUser, between, task
from StreamLoader.stream_generator import * # thought this brings in everything
Packer.py has these imports:
from multipledispatch import dispatch
from PackedItem import PackedItem
StreamGenerator.py has:
import hashlib
from StreamLoader.Packer import Packer
from aes_encryption import AesEncryption
I used pip to install multipledispatch and when I run from within PyCharm it works fine, but from the command line I get the following.
File "C:\Users\guyl\PycharmProjects\engine-load-tests\engine_load_tester_locust\main.py", line 2, in <module>
from StreamLoader.stream_generator import *
File "C:\Users\guyl\PycharmProjects\engine-load-tests\StreamLoader\stream_generator.py", line 2, in <module>
from StreamLoader.Packer import Packer
File "C:\Users\guyl\PycharmProjects\engine-load-tests\StreamLoader\Packer.py", line 1, in <module>
from multipledispatch import dispatch
ModuleNotFoundError: No module named 'multipledispatch'
Here is what I have tried so far:
Add directories to the PYTHONPATH environment variable
Add empty __init__.py files in each package
This all seems unnecessary if I actually pip installed the module, though.
Answer below caused me to no longer see the error with multipledispatch. However, I now see a missing module error:
File "C:\Users\guyl\PycharmProjects\engine-load-tests\engine_load_tester_locust\main.py", line 2, in <module>
from StreamLoader.stream_generator import *
File "C:\Users\guyl\PycharmProjects\engine-load-tests\StreamLoader\stream_generator.py", line 2, in <module>
from Packer import Packer
ModuleNotFoundError: No module named 'Packer'
For clarity, I am running the code from locust which calls the Python code as depicted here. [Moderators - this question is getting quite long. Is that all right?]

PyCharm uses the virtual environment automatically but when you run from the command line the virtual environment isn't turned on.
Just follow the steps:
cd your_working_directory
environment_name/Scripts/activate if on Windows where environment_name is the name of the PyCharm virtual environment
Or environment_name/bin/activate if on MacOS
-------------EDIT------------------------
To answer the new question, try using pip freeze then see which packages are installed. Then install any dependencies which you want which are missing.

Script works in Anaconda Prompt but not via Command Line

I am unable to run a python script in the command line, and this script works great in Jupyter Notebook and via Anaconda Prompt. This appears to be an issue importing the ssl module during initialization of another module I am importing (mygeotab).
I have googled the error and done as much as I can to diagnose the most common cause which appears to be PATH issues.
I have already diagnosed the PATH to a point, and have added the location of the /lib/ and python.exe to the environment variables. Also, during testing I began my script with the below to protect myself from path issues and printed the path before and after the 'append', which did not have an impact on the problem.
import sys
print(sys.path)
sys.path.append('C:\\Users\\xxxxxx\\Python Scripts')
sys.path.append('C:\\Anaconda3\\python37.zip')
sys.path.append('C:\\Anaconda3\\DLLs')
sys.path.append('C:\\Anaconda3\\lib')
sys.path.append('C:\\Anaconda3')
sys.path.append('C:\\Anaconda3\\lib\\site-packages')
sys.path.append('C:\\Anaconda3\\lib\\site-packages\\win32')
sys.path.append('C:\\Anaconda3\\lib\\site-packages\\win32\\lib')
sys.path.append('C:\\Anaconda3\\lib\\site-packages\\Pythonwin')
sys.path.append('C:\\Anaconda3\\lib\\site-packages\\IPython\\extensions')
sys.path.append('C:\\Users\\xxxxxx\\.ipython')
sys.path.append('C:\\Anaconda3\\Lib')
sys.path.append('C:\\Anaconda3\\Lib\\site-packages')
print(sys.path)
import mygeotab
import pandas as pd
import pyodbc as py
from mygeotab.ext import feed
import sqlalchemy
from time import sleep
However, when I attempt to run the script via the standard command line, I get the below error:
Traceback (most recent call last):
File "PYTHON_GEOTAB_TRIP_FEED.py", line 33, in <module>
import mygeotab
File "C:\Anaconda3\lib\site-packages\mygeotab\__init__.py", line 9, in <module>
from .api import Credentials
File "C:\Anaconda3\lib\site-packages\mygeotab\api.py", line 14, in <module>
import ssl
File "C:\Anaconda3\lib\ssl.py", line 98, in <module>
import _ssl # if we can't import it, let the error propagate
ImportError: DLL load failed: The specified module could not be found.
The mygeotab module and ssl.py are both in the locations designated in the Traceback. '_ssl' is the only reference I can not seem to diagnose. Again, this works fine in both Notebook and Anaconda Prompt.
Any ideas?
Windows Server 2008 R2
Anaconda 2019.07 x64
Python 3.7.3 x64

This was solved for me by installing a separate instance of Python 3.7, moving the PATH references and other pointers. I installed pip, mygeotab, and the other packages into the native Python 3.7 instance. It just appears you can't use the one baked into anaconda the way I thought. Thanks for the help everyone.

Import error on first-party library with dev_appserver.py

On Ubuntu 16.04, am suddenly getting import errors from the local GAE development server.
The local dev server starts up, including the admin interface, but app no longer loads.
Native python imports of the same library on same machine (in this case "from google.cloud import datastore") work fine.
The GAE standard app does run when deployed, but development just got a little challenging.
google-cloud is version 0.27.0
gcloud components is 172.0.1
python is Anaconda 2.7.13
GAE is standard
I have confirmed to the best of my middling abilities that $PATH is correct for all named libraries.
I have removed and re-added all the named libraries to no effect.
cachetools(2.0.1) it should probably be noted, is installed as a dependency of the google cloud libraries, so I don't think this is addressable through requirements.txt or "libraries" in app.yaml.
I did recently go through a cycle of removing and adding libraries to fix a problem with apache_beam 2.0.1, so I may have jacked up something else, but am not sure where to look.
Suggestions deeply appreciated. Full traceback (from admin, same as from app):
Traceback (most recent call last):
File "/usr/lib/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/python/runtime/request_handler.py", line 232, in handle_interactive_request
exec(compiled_code, self._command_globals)
File "<string>", line 1, in <module>
File "/home/brian/anaconda3/lib/python2.7/site-packages/google/cloud/datastore/__init__.py", line 61, in <module>
from google.cloud.datastore.client import Client
File "/home/brian/anaconda3/lib/python2.7/site-packages/google/cloud/datastore/client.py", line 23, in <module>
from google.cloud.client import ClientWithProject
File "/home/brian/anaconda3/lib/python2.7/site-packages/google/cloud/client.py", line 27, in <module>
from google.oauth2 import service_account
File "/home/brian/anaconda3/lib/python2.7/site-packages/google/oauth2/service_account.py", line 79, in <module>
from google.auth import jwt
File "/home/brian/anaconda3/lib/python2.7/site-packages/google/auth/jwt.py", line 49, in <module>
import cachetools
ImportError: No module named cachetools

The stacktrace indicates you're running the libraries from the local system installation (the site-packages dir), not from your app.
For standard env GAE apps you need to install the dependencies inside your app and they will be uploaded to GAE together with your app code.
More specifically you need to use the -t <your_app_lib_dir> option for the pip installation. From Installing a third-party library:
Use pip (version 6 or later) with the -t <directory> flag to copy the libraries into the folder you created in the previous
step. For example:
pip install -t lib/ <library_name>

I addressed my problem through the requirements.txt file in app root directory.
I had: google-cloud==0.22.0
and changed it to: google-cloud==0.27.0
which fixed it.

No module named 'json' after installing simplejson

I am working in Ubuntu 14.04 and I have multiple versions of Python on my machine (they include python2.7 and python3.4). Few days back, I installed simplejson on my system. I don't remember how I did that but I guess it must be similar to pip install simplejson. However, now a strange problem has started appearing when I try installing any python package. For example, just now I tried installing Tkinter using sudo pip3.4 install Tkinter and it throws the following error:
Traceback (most recent call last):
File "/usr/local/bin/pip3.4", line 9, in <module>
load_entry_point('pip==1.5.4', 'console_scripts', 'pip3.4')()
File "/usr/lib/python3/dist-packages/pkg_resources.py", line 351, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/usr/lib/python3/dist-packages/pkg_resources.py", line 2363, in load_entry_point
return ep.load()
File "/usr/lib/python3/dist-packages/pkg_resources.py", line 2088, in load
entry = __import__(self.module_name, globals(),globals(), ['__name__'])
File "/usr/lib/python3/dist-packages/pip/__init__.py", line 61, in <module>
from pip.vcs import git, mercurial, subversion, bazaar # noqa
File "/usr/lib/python3/dist-packages/pip/vcs/subversion.py", line 4, in <module>
from pip.index import Link
File "/usr/lib/python3/dist-packages/pip/index.py", line 15, in <module>
from pip.wheel import Wheel, wheel_ext
File "/usr/lib/python3/dist-packages/pip/wheel.py", line 25, in <module>
from distlib.scripts import ScriptMaker
File "/usr/share/python-wheels/distlib-0.1.8-py2.py3-none-any.whl/distlib/scripts.py", line 15, in <module>
File "/usr/share/python-wheels/distlib-0.1.8-py2.py3-none-any.whl/distlib/resources.py", line 20, in <module>
File "/usr/share/python-wheels/distlib-0.1.8-py2.py3-none-any.whl/distlib/util.py", line 11, in <module>
ImportError: No module named 'json'
Sometimes I can fix this if the error tells me that in one of the files I have:
import json
which I simply convert to
import simplejson as json
I tried uninstalling simplejson:
sudo pip uninstall simplejson
but it gives me the same error: json not found.
Can anybody please help me fix this so that I would happily be able to install python packages? Thanks in advance.

Note: I do not have a definitive answer but will offer a series of steps you can try:
The first thing is see if you can import json from the usual python interpreter:
import json
print(json.__file__) #this would be important to know if it works
If that does work (as well as commenting what json.__file__ is) you would then want to try to use pip from the interpreter.
If you can't import json normally:
This is not surprising, I did not expect pip to be looking in a non-standard place for modules. You will want to figure out where the json package should be located on your computer, you can do this by importing another module from the standard library and looking at it's __file__:
>>> import fractions
>>> fractions.__file__
'/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/fractions.py'
This will obviously be different for you but I'd expect there to be a json folder in the same folder as fractions.py
if you can't import fractions or queue or datetime etc.
If you can't import anything from the standard library you will probably want to just reinstall python.
If the json folder is there and contains an __init__.py
Use the rename function of your file browser to make sure there are no weird special characters, but other then that I'm not sure, if you can import fractions.py but not a package from the same folder that would imply there is something very wrong with the import mechanics of your python version.
If the json folder is not with the rest of the standard library
It is possible that your python distribution has a different structure then I'd expect, it at least can't hurt to take a look for it.
You can search for the json folder amongst your various python files using the find command, not really sure how it works but just another thing to try. If you do find it with the __init__.py, encode.py, decode.py, scanner.py, and tool.py (at least those are the ones in my version) you'll probably want to figure out how it got there, but maybe just move it to the same folder as the rest of the standard library.
If you can't find the json package or you find it and it is corrupted
Well then you will need to replace it! Don't worry, this isn't too hard, just grab a source release of python from the site and extract the json package from it, once it is uncompressed the json folder should be in the Lib folder. Simply copy/move it to the rest of the standard library and you should be good to go!
I hope this helps you debug what is going on, This covers all the scenarios I could imagine happening and I would be interested in which one fixed your issue (or what you were able to figure out so I can come up with more options)

I am guessing that you install it using either pip install simplejson to download from PyPI or using apt-get install python-simplejson to download from ubuntu repositories.
It is possible that you downlaoded the library for the Python2 if you used any of the commands above and it won't be available for Python3 (which pip3.4 will use). Can you try these commands and help debug yourself?
$ python -c "import simplejson"
$ python3.4 -c "import simplejson"
This would tell you which version of the python did you install simplejson for last time (my guess in python2). If the 2nd command errors out with ImportError try:
$ pip3.4 install simplejson
and then install your libraries.

Go tutorial for Google App Engine: ImportError: No module named _md5

I'm trying to run the hello world tutorial for the Google app engine in Go language. The GAE SDK for go is based on python 2.5, which I installed. I then had to install openssl, but now when I try to run my sample application on the SDK, I get the following error:
ImportError: No module named _md5
I even tried a simple import md5 & import hashlib from the python interpreter interface, and i still get the same error
>>> import hashlib
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.5/hashlib.py", line 133, in <module>
md5 = __get_builtin_constructor('md5')
File "/usr/local/lib/python2.5/hashlib.py", line 60, in __get_builtin_constructor
import _md5
ImportError: No module named _md5
Does anybody know a workaround for this? Thank you!
I have a feeling that this problem is really about python installation than anything else

Your problem has nothing to do with GAE, or the SDK. I have faced this before. If you tried to install your custom version of python (on Ubuntu), then you land up with such issues. You should uninstall the custom python using checkinstall. More details can be found about there here: Uninstall python built from source?.
Just use the default python and you'll be fine!