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Sage is a mathematical software system, and this tag is intended for questions involving this software in a substantive way. This tag should hardly ever be the only tag of a question; typically there should be additional tags to indicate the mathematical content of the question. Please note that questions that are purely support-questions on Sage are not a good fit for this site.
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Is there any fast implementation of four color theorem in Python?
__init__ (build/cythonized/sage/numerical/mip.c:3989)
File "sage/numerical/backends/generic_backend.pyx", line 1640, in sage.numerical.backends.generic_backend.get_solver (build/cythonized/sage/numerical … Failed to build sage-numerical-backends-gurobi
Installing collected packages: sage-numerical-backends-gurobi
Running setup.py install for sage-numerical-backends-gurobi ... error
ERROR: Command …