Update python build process to test a bit more

And store the targets in the Makefile.  I'm not sure if `python a.py
b.py` runs both (I think probably not---I think it passes `b.py` as an
argument to `a.py`), so instead we invoke python separately.

.github/workflows/python.yml

@@ -57,4 +57,4 @@ jobs:
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - run: make check
     - run: wandb login --anonymously
-    - run: python train_max_of_2.py --fail-if-cant-load
+    - run: make analyze

training/Makefile

@@ -8,8 +8,24 @@ CHECK_PY_FILES := \
 	#
 
 .PHONY: check
-check:
-	$(PYTHON) $(CHECK_PY_FILES)
+check::
+
+define add_target
+$(1)::
+	$(2)
+endef
+
+$(foreach f,$(CHECK_PY_FILES),$(eval $(call add_target,check,$(PYTHON) $(f))))
+
+ANALYZE_PY_FILES := \
+	train_max_of_2.py \
+	proof_max2_01_exhaustive.py \
+	#
+
+.PHONY: analyze
+analyze::
+
+$(foreach f,$(ANALYZE_PY_FILES),$(eval $(call add_target,analyze,$(PYTHON) $(f) --fail-if-cant-load)))
 
 BROKEN_PACKAGES_GREP_PATTERN:='^mkl'