Python perfs: better caching.

python-perfs/perfs.md

@@ -400,11 +400,10 @@ python -m snakeviz phi5.prof
 ```shell
 $ python -m pip install scalene
 $ scalene phi5.py 100000
-##!if [ ! -f output/phi5.html ]; then scalene include/phi5.py 100000 --html --outfile output/phi5.html --cli >&2; fi
-##!if [ ! -f output/phi5-scalene.png ]; then cutycapt --min-width=1024 --delay=100 --url=file://$(pwd)/output/phi5.html --out=output/phi5-scalene.png; fi
+#!if [ ! -f output/phi5.html ]; then ( cd include; scalene phi5.py 100000 --html --outfile ../output/phi5.html --cli >&2 ); fi
+#!if [ ! -f output/phi5-scalene.png ]; then cutycapt --min-width=1024 --delay=100 --url=file://$(pwd)/output/phi5.html --out=output/phi5-scalene.png; fi
 ```
 
-
 ## Scalene
 
 ![](phi5-scalene.png)
@@ -434,7 +433,6 @@ Cython est un dialecte de Python transpilable en C.
 
 ## Cython démo
 
-#!rm -f include/*.so  # Ensure we're not hitting the cythonized one here...
 ```shell
 $ python -m pyperf timeit \
 > -s 'from collatz_length import collatz_length'
@@ -443,11 +441,10 @@ $ python -m pyperf timeit \
 ```
 
 ```shell
-$ cythonize --inplace collatz_length.py
-#!cythonize --inplace include/collatz_length.py
+$ cythonize --inplace collatz_length_cython.py
+#!if ! [ -f include/collatz_length_cython.*.so ] ; then cythonize --inplace include/collatz_length_cython.py; fi
 ```
 
-
 ```shell
 $ python -m pyperf timeit \
 > -s 'from collatz_length import collatz_length'
@@ -461,8 +458,8 @@ $ python -m pyperf timeit \
 
 ```shell
 $ cython -a collatz_length.py
-#!cython -a include/collatz_length.py
-#!cutycapt --min-width=1024 --delay=500  --url=file://$(pwd)/include/collatz_length.html --out=output/collatz_length.png
+#!if ! [ -f include/collatz_length.html ] ; then cython -a include/collatz_length.py; fi
+#!if ! [ -f output/collatz_length.png ] ; then cutycapt --min-width=1024 --delay=500  --url=file://$(pwd)/include/collatz_length.html --out=output/collatz_length.png; fi
 ```
 
 ![](collatz_length.png)
@@ -478,7 +475,7 @@ $ cython -a collatz_length.py
 $ cythonize --inplace collatz_length_annotated.py
 ```
 
-#!cythonize --inplace include/collatz_length_annotated.py
+#!if ! [ -f include/collatz_length_annotated.*.so ] ; then cythonize --inplace include/collatz_length_annotated.py; fi
 
 ```shell
 $ python -m pyperf timeit \
@@ -492,8 +489,8 @@ $ python -m pyperf timeit \
 
 ```shell
 $ cython -a include/collatz_length_annotated.py
-#!cython -a include/collatz_length_annotated.py
-#!cutycapt --min-width=1024 --delay=500  --url=file://$(pwd)/include/collatz_length_annotated.html --out=output/collatz_length_annotated.png
+#!if ! [ -f include/collatz_length_annotated.html ] ; then cython -a include/collatz_length_annotated.py; fi
+#!if ! [ -f output/collatz_length_annotated.png ] ; then cutycapt --min-width=1024 --delay=500  --url=file://$(pwd)/include/collatz_length_annotated.html --out=output/collatz_length_annotated.png; fi
 ```
 
 ![](collatz_length_annotated.png)
@@ -528,7 +525,7 @@ mypyc est un compilateur qui s'appuie sur les annotationes de type mypy :
 
 ```shell
 $ mypyc include/collatz_length_mypy.py
-#!mypyc include/collatz_length_mypy.py
+#!if ! [ -f collatz_length_mypy.*.so ] ; then mypyc include/collatz_length_mypy.py; fi
 ```
 
 ```shell
@@ -551,7 +548,7 @@ pythran est un compilateur pour du code scientifique :
 
 ```shell
 $ pythran include/collatz_length_pythran.py
-#!pythran include/collatz_length_pythran.py
+#!if ! [ -f collatz_length_pythran.*.so ]; then pythran include/collatz_length_pythran.py; fi
 ```
 
 ```shell
@@ -568,14 +565,14 @@ Aussi un compilateur, aussi utilisable pour distribuer une application.
 
 ```shell
 $ python -m nuitka --module collatz_length_nuitka.py
-#!python -m nuitka --module include/collatz_length_nuitka.py >/dev/null
+#!if ! [ -f collatz_length_nuitka.*.so ]; then python -m nuitka --module include/collatz_length_nuitka.py >/dev/null; fi
 ```
 
 ```shell
 $ python -m pyperf timeit \
 > -s 'from collatz_length_nuitka import collatz_length' \
 > 'collatz_length(837799)'
-#!cache --force -- python -m pyperf timeit --fast -s 'from collatz_length_nuitka import collatz_length' 'collatz_length(837799)'
+#!cache -- python -m pyperf timeit --fast -s 'from collatz_length_nuitka import collatz_length' 'collatz_length(837799)'
 ```
 
 
@@ -584,3 +581,28 @@ $ python -m pyperf timeit \
 https://github.com/pfalcon/awesome-python-compilers
 
 # Hand crafted C
+
+```c
+#!sed -n '/int collatz_length/,/^$/p' include/my_collatz_length.c
+```
+
+Mais comment l'utiliser ?
+
+## Hand crafted C
+### Avec Cython
+
+```cpython
+#!cat include/collatz_length_cython_to_c.pyx
+```
+
+```shell
+$ cythonize -i include/collatz_length_cython_to_c.pyx
+#!if ! [ -f include/collatz_length_cython_to_c.*.so ] ; then cythonize -i include/collatz_length_cython_to_c.pyx; fi
+```
+
+```shell
+$ python -m pyperf timeit \
+> -s 'from collatz_length_cython_to_c import collatz_length' \
+> 'collatz_length(837799)'
+#!cache -- python -m pyperf timeit --fast -s 'from include.collatz_length_cython_to_c import collatz_length' 'collatz_length(837799)'
+```