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Exception in comparison #797

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mmatera opened this issue Feb 22, 2023 · 0 comments · May be fixed by #975

Contributor

mmatera commented Feb 22, 2023

Description

Wo["x"]>0 raises an exception:

File "mathics-core/mathics/builtin/testing_expressions/equality_inequality.py", line 94, in eval
    c = do_cmp(x, y)
  File "mathics-core/mathics/eval/testing_expressions.py", line 32, in do_cmp
    if s1.is_Float and s2.is_Float:
AttributeError: 'NoneType' object has no attribute 'is_Float'

This seems to happen only if one of the arguments is a String. For example,

Wo[3]>0
Wo[f[x]]>0

stays unevaluated, but

Wo[3, "x"]>0
Wo[f["x"]]>0

raise the exception.

The text was updated successfully, but these errors were encountered:

mmatera added a commit that referenced this issue


          fix comparisons (issue #797)

mmatera linked a pull request

that will close this issue

fix comparisons (issue #797) #975

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