mathparse | Python library for evaluating natural language | Natural Language Processing library

This is due to JDK version mismatch in the library. The library isn't updated to support the latest JDK version.

I have tested that jdk10 version works perfectly

• Add jdk10 version of library to your libs folder from this folder:

Take a look here:

• http://mathparser.org/mxparser-tutorial/playing-with-expression-tokens/
• http://mathparser.org/mxparser-tutorial/
• http://mathparser.org/api/
• http://mathparser.org/api/org/mariuszgromada/math/mxparser/parsertokens/package-summary.html
• http://mathparser.org/api/org/mariuszgromada/math/mxparser/parsertokens/Token.html

Generally - in your example you did not define any argument. Parser will find names that are not recognized. It will give you a hint that it look like argument. Take a look on Token.looksLike field.

To define user argument follow the tutorial:

• http://mathparser.org/mxparser-tutorial/user-defined-arguments/

To get the list of missing user defined arguments take a look on Expression.getMissingUserDefinedArguments(), Expression.getMissingUserDefinedUnits(), Expression.getMissingUserDefinedFunctions()

• http://mathparser.org/api/org/mariuszgromada/math/mxparser/Expression.html#getMissingUserDefinedArguments()
• http://mathparser.org/api/org/mariuszgromada/math/mxparser/Expression.html#getMissingUserDefinedUnits()
• http://mathparser.org/api/org/mariuszgromada/math/mxparser/Expression.html#getMissingUserDefinedFunctions()

To understand the tokenTypId and tokenId study each mXparser class searching for TYPE_ID value and _ID value, for instance:

• http://mathparser.org/api/org/mariuszgromada/math/mxparser/parsertokens/BinaryRelation.html
• http://mathparser.org/api/org/mariuszgromada/math/mxparser/parsertokens/BinaryRelation.html#TYPE_ID
• http://mathparser.org/api/org/mariuszgromada/math/mxparser/Argument.html#TYPE_ID
• ...

Best regards

Maybe you have the module but you don’t download it. Juste type : “pip install chatterbot” on cmd. Or if that dont work, try : “import chatterbot”

I was only able to install it using, i found in another forum:

I have tried this and it is working just fine I think you might forget to add the package name

So I think the pipenv version is the reason why it fails. There's a bug in the version it's using that prevents the app from compiling. The solution was to use a requirements.txt so heroku uses pip instead. Even after clearing the app's cache, it still would use the Pipfile from somewhere, so destroying the app and re-creating it with requirements.txt file resolved the issue.

The reason is that computers calculate in base 2, not base 10. The number 10/3 has an infinite expansion in both base 2 and base 10 meaning it must be truncated. The decimal expansion of 10/3 is 3.333..., which when you cut it off simplifies to a bunch of 3's; while the binary expansion is 11.010101010101... and when you cut it off and convert back to decimal, it's totally believable that you could get the 5 at the end. I'm not sure you can get around that when using a computer since computers have to use binary and they also have to truncate the binary expansion.

ChatterBot indirectly required blis==0.2.4 and the version doesn't provide precompiled wheels for Python 3.8. My advice is to downgrade to Python 3.7.

If you want to compile blis for Python 3.8 see the compilation instructions at https://github.com/explosion/cython-blis#installation:

If you want to install from source and you're on Windows, you'll need to install LLVM.