Bug#951592: sagemath-common: SyntaxWarnings setting up sagemath-common

[John Scott]

Package: sagemath-common
Version: 9.0-1
Severity: normal

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On upgrading to the new version in Buster, I've gotten these warnings during
installation:

Setting up sagemath-common (9.0-1) ...
/usr/lib/python3/dist-packages/sage/combinat/root_system/branching_rules.py:1753: SyntaxWarning: "is not" with a literal. Did you mean "!="?
  if len(stypes) is not 2:
/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1159: SyntaxWarning: 'str' object is not callable; perhaps you missed a comma?
  raise TypeError('%s option must be a dictionary, not %s' (name, value))
/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1168: SyntaxWarning: 'str' object is not callable; perhaps you missed a comma?
  raise TypeError('%s option must be a dictionary, not %s' (name, value))
/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1175: SyntaxWarning: 'str' object is not callable; perhaps you missed a comma?
  raise TypeError('%s option must be a dictionary, not %s' (name, value))
/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1182: SyntaxWarning: 'str' object is not callable; perhaps you missed a comma?
  raise TypeError('%s option must be a dictionary, not %s' (name, value))
/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1189: SyntaxWarning: 'str' object is not callable; perhaps you missed a comma?
  raise TypeError('%s option must be a dictionary, not %s' (name, value))
/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1196: SyntaxWarning: 'str' object is not callable; perhaps you missed a comma?
  raise TypeError('%s option must be a dictionary, not %s' (name, value))
/usr/lib/python3/dist-packages/sage/graphs/graph_latex.py:1203: SyntaxWarning: 'str' object is not callable; perhaps you missed a comma?
  raise TypeError('%s option must be a dictionary, not %s' (name, value))

Fortunately this appears to be a cosmetic issue, but creates a lot of
noise and I can't discern its meaning.

- -- System Information:
Debian Release: bullseye/sid
  APT prefers testing-debug
  APT policy: (500, 'testing-debug'), (500, 'testing'), (2, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 5.4.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE= (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages sagemath-common depends on:
ii  python3  3.7.5-3

sagemath-common recommends no packages.

sagemath-common suggests no packages.

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