Just installed latest FreeCAD on Mac and get error message - related to Assembly3 I assume

[keithsloan52]

I just updated my system with FreeCAD_0.19-22611-macOS-x86_64-conda.dmg

When FreeCAD starts up I get the following error message

Code: Select all

19:19:08  Init: Initializing freecad.asm3
19:19:08  Module: Part
19:19:09  Loading Part module... done
19:19:13  /Applications/FreeCAD_0.19-B.app/Contents/Resources/lib/python3.8/site-packages/mpmath/ctx_mp_python.py:892: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if other is 0:
19:19:13  /Applications/FreeCAD_0.19-B.app/Contents/Resources/lib/python3.8/site-packages/mpmath/ctx_mp_python.py:986: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if other is 0:
19:19:13  Init: Initializing freecad.asm3... done

[chrisb]

Known issue in a third party lib.

[vocx]

...
When FreeCAD starts up I get the following error message

This is not an error message, it is a warning, as said in the message itself.

It is due to the mpmath mathematical library included with Python 3.8. This is not caused by FreeCAD in any way.

Once the mpmath authors fix the syntax in their file, this message will go away.

SyntaxWarning

[keithsloan52]

...
When FreeCAD starts up I get the following error message

This is not an error message, it is a warning, as said in the message itself.

It is due to the mpmath mathematical library included with Python 3.8. This is not caused by FreeCAD in any way.

Once the mpmath authors fix the syntax in their file, this message will go away.

SyntaxWarning

Yes it does say SyntaxWarning: "is" with a literal. Did you mean "=="?

But this is Python is it not.

I know my Python is not great, but surely if you use is 'x' where 'x' is a literal then you are not going to get your expected behaviour,
i.e. Its a bug in mpmath and would affect Assemble3 Workbench

[Kunda1]

When you compare an object to None, use is rather than ==. None is a singleton object, comparing using == invokes the __eq__ method on the object in question, which may be slower than identity comparison. Comparing to None using the is operator is also easier for other programmers to read.

Source: https://lgtm.com/rules/7900090/

It's been fixed upstream so I guess we're waiting for an upstream release?

[sgrogan]

But this is Python is it not.

Please let's consolidate here: https://forum.freecadweb.org/viewtopic.php?f=4&t=50942

[Kunda1]

Please let's consolidate here: https://forum.freecadweb.org/viewtopic.php?f=4&t=50942

This thread is locked in favor of https://forum.freecadweb.org/viewtopic.php?f=4&t=50942