After #26212, there remains only a few failing doctests (not using any optional package).

Fixed:

• 1 in src/sage/tests/books/computational-mathematics-with-sagemath/graphtheory_doctest.py py3: fix last 2 doctests in French book #28300
• 1 in src/sage/tests/books/computational-mathematics-with-sagemath/sol/graphtheory_doctest.py py3: fix last 2 doctests in French book #28300
• (A) 1 in src/sage/combinat/root_system/non_symmetric_macdonald_polynomials.py py3 fix for combinat/root_system/non_symmetric_macdonald_polynomials.py #28305
• (D) 1 in src/sage/tests/cmdline.py Further fixes for sage-env-less installs #28320
• (C) 1 in src/sage/symbolic/expression.pyx add a doctest for pynac's rational hash function #28219 upgrade Pynac to 0.7.26 #28412
• (K) 2 in src/sage/crypto/block_cipher/present.py py3: crypto/block_cipher/present.py doctest failures #28403
• (B) 7 in src/sage/combinat/root_system/weyl_group.py Py3: Fix RecursivelyEnumeratedSet BFS for python3. #27967 py3 fixes for weyl_group.py #28351
• (E) 1 at line 597 in src/sage/libs/eclib/interface.py py3 failure in src/sage/libs/eclib/interface.py #28454 Upgrade eclib to v.20190909 #28472
• (G) src/sage/rings/polynomial/polynomial_rational_flint.pyx py3: polynomial_rational_flint.pyx problem #28334 py3: flush output from FLINT error message #28649
• (H) 1 in src/sage/libs/singular/function.pyx Patchbot and Python 3 doctest failures #28622
• (I) 2 in src/sage/numerical/backends/generic_backend.pyx Patchbot and Python 3 doctest failures #28622
• (J) 4 in src/sage/repl/attach.py Patchbot and Python 3 doctest failures #28622

Those that are not yet handled are the following.

On several machines:

• (F) 1 in src/sage/schemes/hyperelliptic_curves/hyperelliptic_finite_field.py (not seen since some time. random ? could be ignored ?)

but not on these machines: macOS mojave (several different machines)

OS X only:

• (K) 2 in src/sage/symbolic/expression.py py3 + OS X: symbolic/expression.pyx #28489
• (L) 1 in src/sage/numerical/linear_tensor_element.pyx random segfaults in linear_tensor_element.pyx #28559

Table summary:

CC: @vinklein @embray @jm58660 @timokau @jhpalmieri @dcoudert @Etn40ff @antonio-rojas

Component: python3

Issue created by migration from https://trac.sagemath.org/ticket/28298