ctypes-demo

Demonstration of the use of ctypes in the Coders Club meeting on Tuesday 19th August 2014.

Links

• ctypes
• argparse

Requirements

• this package
• ROOT
• Python version >=2.7 or >=3.2 (for argparse and ctypes)

On the lx-machines, all you need to do is

git clone [email protected]:ichep-coders-club/ctypes-demo
source setup.sh

Example 1

(Modified from this blog post ) This is the 'trivial example'

make example1
./example1.py

Example 2

Here some more features are shown:

• argtypes

• restype

• Python3 subtleties

• arrays

• structs

  make example2 ./example2.py

Example 3

Wrapping ROOT

make example3
./example3.py -h
./example3.py --rootfile ~/cpp-mc-tools/nuhm2_140812_mc10.root --plot-name m0_nuhm2_m12_chi2 --outfile test.pdf