number_of_times = 100000
try:
number_of_times = int(sys.argv[2])
except Exception:
pass
# The main top-level CFFI class that you instantiate once
ffi = cffi.FFI()
# Parses the given C source. This registers all declared functions.
ffi.cdef('int compute_fibonacci(int n);')
# Load and return a dynamic library. The standard C library can be loaded by passing None.
libfib = ffi.dlopen('./libfibonacci.so')
fib_py = fib_python.compute_fibonacci(n)
fib_cffi = libfib.compute_fibonacci(n)
if fib_py != fib_cffi:
raise (ValueError(fib_cffi))
py_tot = timeit.timeit("compute_fibonacci({})".format(n),
setup="from fib_python import compute_fibonacci",
number=number_of_times)
cffi_tot = timeit.timeit(
"libfib.compute_fibonacci({})".format(n),
setup=
"""import cffi; ffi = cffi.FFI(); ffi.cdef('int compute_fibonacci(int n);'); libfib = ffi.dlopen('./libfibonacci.so')""",
number=number_of_times)
py_avg = py_tot / number_of_times
cffi_avg = cffi_tot / number_of_times
import sys
import timeit
n = 20
try:
n = int(sys.argv[1])
except Exception:
pass
number_of_times = 100000
try:
number_of_times = int(sys.argv[2])
except Exception:
pass
fib_py = compute_fibonacci(n)
fib_cy = compute_fibonacci_wrapper(n)
if fib_py != fib_cy:
raise (ValueError(fib_cy))
py_tot = timeit.timeit("compute_fibonacci({})".format(n),
setup="from fib_python import compute_fibonacci",
number=number_of_times)
cy_tot = timeit.timeit("compute_fibonacci_wrapper({})".format(n),
setup="from cyfib import compute_fibonacci_wrapper",
number=number_of_times)
py_avg = py_tot / number_of_times
cy_avg = cy_tot / number_of_times
print("fib({}) = {}".format(n, fib_py))
print("Python average time: {0:.2g}".format(py_avg))