C/C++ in Python for Dummies
Project description
You have no clue about C/C++, but want to boost Python using C/C++ code? Try this!
cinpy is made for people who never coded in C/C++, but want to use C/C++ functions/algorithms found somewhere on the internet (GitHub, Stack Overflow, ChatGPT …) in their Python code to speed things up.
This module is not for massive frameworks, only for small scripts/code snippets. It is very simple and straightforward to use.
pip install cinpy
Please install:
MSVC ..... C++ x64/x86 build tools from:
Localize the following files (Version number might vary) and copy their path:
vcvarsall_bat = r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat"
cl_exe = r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe"
link_exe = r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe"
Examples
from cinpy import CreateCppDll
variable_for_function_creation = (
r"!CT_DATA_DTYPE!_!CT_DATA_DTYPE2!_!C_FUNCTION_NAME!_!CT_DATA_DTYPE3!"
)
appc = CreateCppDll(
cfunctioname="cppradixsort",
cfunction=rf"""
!DTYPE_EXPLANATIONC!
__declspec(dllexport) void {variable_for_function_creation}
(!C_DATA_DTYPE! * indatav1,size_t size,
!C_DATA_DTYPE2! * indatav2,
!C_DATA_DTYPE3! * outdatav )
{{
std::vector<!C_DATA_DTYPE!> v(indatav1,
indatav1 + size);
concurrency::parallel_radixsort(begin(v), end(v));
std::copy(v.begin(), v.begin()+size, outdatav);
}}
""",
samedtypes=("!C_DATA_DTYPE!", "!C_DATA_DTYPE3!"),
modulename="radixsortcpp",
variable_for_function_creation=variable_for_function_creation,
cheader="""
//#include <iostream>
//#include <stdio.h>
//#include <algorithm> // std::replace_if
#include <vector> // std::vector
//#include <functional>
//#include <conio.h>
#include <ppl.h>
""",
cfooter="",
ignored_dtypes1=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
"double",
"long double",
"float complex",
"double complex",
"long double complex",
),
ignored_dtypes2=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
"double",
"long double",
"float complex",
"double complex",
"long double complex",
),
ignored_dtypes3=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
"double",
"long double",
"float complex",
"double complex",
"long double complex",
),
vcvarsall_bat=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat",
cl_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe",
link_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe",
compilerflags=("/std:c++17", "/Ferelease", "/EHsc", "/MT", "/O2", "/bigobj"),
)
appc.compile_cpp_code()
# compile and run
from cinpy.radixsortcppmodule import cppradixsort
import numpy as np
arr1 = np.random.randint(0, 10000, 800000000)
arr2 = np.array([],dtype=arr1.dtype)
sodi=cppradixsort(arr1,arr2,arr1.dtype)
import numpy as np
from time import perf_counter
arr1 = np.random.randint(0, 10000, 800000000)
arr2 = np.array([],dtype=arr1.dtype)
start=perf_counter()
sodi=cppradixsort(arr1,arr2,arr1.dtype)
print('c++: ', perf_counter()-start)
start=perf_counter()
np.sort(arr1)
print('numpy: ', perf_counter()-start)
c++: 5.262247000000002
numpy: 36.521482199999994
import numpy as np
from time import perf_counter
arr1 = np.random.randint(0, 10000, 800000000).tolist()
start=perf_counter()
arr1.sort()
print('python: ', perf_counter()-start)
python: 158.9699383
from cinpy import CreateCppDll
variable_for_function_creation = (
r"!CT_DATA_DTYPE!_!CT_DATA_DTYPE2!_!C_FUNCTION_NAME!_!CT_DATA_DTYPE3!"
)
appc = CreateCppDll(
cfunctioname="cppbufferedsort",
cfunction=rf"""
!DTYPE_EXPLANATIONC!
__declspec(dllexport) void {variable_for_function_creation}(!C_DATA_DTYPE! * indatav1,size_t size, !C_DATA_DTYPE2! * indatav2, !C_DATA_DTYPE3! * outdatav )
{{
std::vector<!C_DATA_DTYPE!> v(indatav1, indatav1 + size);
concurrency::parallel_buffered_sort(begin(v), end(v));
std::copy(v.begin(), v.begin()+size, outdatav);
}}
""",
samedtypes=("!C_DATA_DTYPE!", "!C_DATA_DTYPE3!"),
modulename="bufferedsortcpp",
variable_for_function_creation=variable_for_function_creation,
cheader="""
//#include <iostream>
//#include <stdio.h>
//#include <algorithm> // std::replace_if
#include <vector> // std::vector
//#include <functional>
//#include <conio.h>
#include <ppl.h>
""",
cfooter="",
ignored_dtypes1=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
# "double",
"long double",
"float complex",
"double complex",
"long double complex",
),
ignored_dtypes2=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
# "double",
"long double",
"float complex",
"double complex",
"long double complex",
),
ignored_dtypes3=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
# "double",
"long double",
"float complex",
"double complex",
"long double complex",
),
vcvarsall_bat=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat",
cl_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe",
link_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe",
compilerflags=("/std:c++17", "/Ferelease", "/EHsc", "/MT", "/O2", "/bigobj"),
)
appc.compile_cpp_code()
"""
# Compile and run
from cinpy.bufferedsortcppmodule import cppbufferedsort
import numpy as np
arr1 = np.random.random(8000000)
arr2 = np.array([],dtype=arr1.dtype)
%timeit cppbufferedsort(arr1,arr2,arr1.dtype)
%timeit np.sort(arr1)
193 ms ± 7.74 ms per loop (mean ± std. dev. of 7 runs, 10 loops each)
568 ms ± 1.97 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
cppbufferedsort(arr1,arr2,arr1.dtype)
Out[3]:
array([5.84790262e-07, 6.10106611e-07, 6.50635063e-07, ...,
9.99999442e-01, 9.99999492e-01, 9.99999790e-01])
np.sort(arr1)
Out[6]:
array([5.84790262e-07, 6.10106611e-07, 6.50635063e-07, ...,
9.99999442e-01, 9.99999492e-01, 9.99999790e-01])
"""
from cinpy import CreateCppDll
variable_for_function_creation = (
r"!CT_DATA_DTYPE!_!CT_DATA_DTYPE2!_!C_FUNCTION_NAME!_!CT_DATA_DTYPE3!"
)
appc = CreateCppDll(
cfunctioname="variouscalculations",
cfunction=rf"""
!DTYPE_EXPLANATIONC!
__declspec(dllexport) void {variable_for_function_creation}(!C_DATA_DTYPE! * indatav1,size_t size, !C_DATA_DTYPE2! * indatav2, !C_DATA_DTYPE3! * outdatav )
{{
concurrency::parallel_for (size_t(0), size, [&](size_t u){{
outdatav[u] = indatav1[u] * indatav2[0] / indatav2[1] + indatav2[2] - indatav2[3];}});
}}
""",
samedtypes=(),
modulename="calcvarious",
variable_for_function_creation=variable_for_function_creation,
cheader="""
//#include <iostream>
//#include <stdio.h>
//#include <algorithm> // std::replace_if
//#include <vector> // std::vector
//#include <functional>
//#include <conio.h>
#include <ppl.h>
""",
cfooter="",
ignored_dtypes1=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
# "double",
"long double",
"float complex",
"double complex",
"long double complex",
),
ignored_dtypes2=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
# "double",
"long double",
"float complex",
"double complex",
"long double complex",
),
ignored_dtypes3=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
# "double",
"long double",
"float complex",
"double complex",
"long double complex",
),
vcvarsall_bat=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat",
cl_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe",
link_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe",
compilerflags=("/std:c++17", "/Ferelease", "/EHsc", "/MT", "/O2", "/bigobj"),
)
appc.compile_cpp_code()
# Compile the code and run:
from cinpy.calcvariousmodule import variouscalculations
import numpy as np
inputarray3np = np.random.randint(0, 10000000, 1000000).astype(np.float64)
inputarray4np = np.array([40.2901,4.21,2.12,6.3])
cp=variouscalculations(inputarray3np,inputarray4np,np.float64)
nu= inputarray3np *40.2901/4.21+2.12-6.3
print(cp)
print(nu)
[15388258.80463183 85115406.42555821 75231240.03558196 ...
34228493.34042756 68792824.6350119 86092819.36931117]
[15388258.80463183 85115406.42555821 75231240.03558196 ...
34228493.34042756 68792824.6350119 86092819.36931117]
%timeit variouscalculations(inputarray3np,inputarray4np,np.float64)
2.04 ms ± 124 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
%timeit inputarray3np *40.2901/4.21+2.12-6.3
10.2 ms ± 63.6 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
from cinpy import CreateCppDll
variable_for_function_creation = (
r"!CT_DATA_DTYPE!_!CT_DATA_DTYPE2!_!C_FUNCTION_NAME!_!CT_DATA_DTYPE3!"
)
appc = CreateCppDll(
cfunctioname="multiplybyarray",
cfunction=rf"""
!DTYPE_EXPLANATIONC!
__declspec(dllexport) void {variable_for_function_creation}(!C_DATA_DTYPE! * indatav1,size_t size, !C_DATA_DTYPE2! * indatav2, !C_DATA_DTYPE3! * outdatav )
{{
concurrency::parallel_for (size_t(0), size, [&](size_t u){{
outdatav[u] = indatav1[u] * indatav2[u];}});
}}
""",
samedtypes=(),
modulename="multiplyarrays",
variable_for_function_creation=variable_for_function_creation,
cheader="""
//#include <iostream>
//#include <stdio.h>
//#include <algorithm> // std::replace_if
//#include <vector> // std::vector
//#include <functional>
//#include <conio.h>
#include <ppl.h>
""",
cfooter="",
ignored_dtypes1=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
# "double",
"long double",
"float complex",
"double complex",
"long double complex",
),
ignored_dtypes2=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
# "double",
"long double",
"float complex",
"double complex",
"long double complex",
),
ignored_dtypes3=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
# "double",
"long double",
"float complex",
"double complex",
"long double complex",
),
vcvarsall_bat=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat",
cl_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe",
link_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe",
compilerflags=("/std:c++17", "/Ferelease", "/EHsc", "/MT", "/O2", "/bigobj"),
)
appc.compile_cpp_code()
# compile and run
from cinpy.multiplyarraysmodule import multiplybyarray
import numpy as np
inputarray3np = np.random.randint(0, 1005000, 8000000).astype(np.uint64)
inputarray4np = np.random.randint(0, 1022300, 8000000).astype(np.uint64)
%timeit multiplybyarray(inputarray3np,inputarray4np,np.uint64)
%timeit inputarray3np*inputarray4np
18.1 ms ± 757 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
26.6 ms ± 163 µs per loop (mean ± std. dev. of 7 runs, 10 loops each)
multiplybyarray(inputarray3np,inputarray4np,np.uint64)
Out[4]:
array([218000641625, 493834462272, 38299985966, ..., 74381999748,
168393582760, 515058090867], dtype=uint64)
inputarray3np*inputarray4np
Out[5]:
array([218000641625, 493834462272, 38299985966, ..., 74381999748,
168393582760, 515058090867], dtype=uint64)
from cinpy import CreateCppDll
variable_for_function_creation = (
r"!CT_DATA_DTYPE!_!CT_DATA_DTYPE2!_!C_FUNCTION_NAME!_!CT_DATA_DTYPE3!"
)
appc = CreateCppDll(
cfunctioname="multiplybynumber",
cfunction=rf"""
!DTYPE_EXPLANATIONC!
__declspec(dllexport) void {variable_for_function_creation}(!C_DATA_DTYPE! * indatav1,size_t size, !C_DATA_DTYPE2! * indatav2, !C_DATA_DTYPE3! * outdatav )
{{
concurrency::parallel_for (size_t(0), size, [&](size_t u){{
outdatav[u] = indatav1[u] * indatav2[0];}});
}}
""",
samedtypes=(),
modulename="mulbyonenumber",
variable_for_function_creation=variable_for_function_creation,
cheader="""
//#include <iostream>
//#include <stdio.h>
//#include <algorithm> // std::replace_if
//#include <vector> // std::vector
//#include <functional>
//#include <conio.h>
#include <ppl.h>
""",
cfooter="",
ignored_dtypes1=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
# "double",
"long double",
"float complex",
"double complex",
"long double complex",
),
ignored_dtypes2=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
# "double",
"long double",
"float complex",
"double complex",
"long double complex",
),
ignored_dtypes3=(
"bool",
# "signed char",
# "unsigned char",
# "short",
# "unsigned short",
# "int",
# "unsigned int",
# "long",
# "unsigned long",
# "long long",
# "unsigned long long",
"float",
# "double",
"long double",
"float complex",
"double complex",
"long double complex",
),
vcvarsall_bat=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat",
cl_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe",
link_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe",
compilerflags=("/std:c++17", "/Ferelease", "/EHsc", "/MT", "/O2", "/bigobj"),
)
appc.compile_cpp_code()
# compile and run
from cinpy.mulbyonenumbermodule import multiplybynumber
import numpy as np
inputarray3np = np.random.randint(0, 100000, 8000000).astype(np.float64)
inputarray4np = np.array([2.345122],dtype=np.float64)
%timeit multiplybynumber(inputarray3np,inputarray4np,np.float64)
%timeit inputarray3np*inputarray4np[0]
14.5 ms ± 99 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
22.1 ms ± 131 µs per loop (mean ± std. dev. of 7 runs, 10 loops each)
multiplybynumber(inputarray3np,inputarray4np,np.float64)
Out[10]:
array([221388.897288, 123871.689162, 40683.176456, ..., 222221.415598,
73761.122266, 69851.803892])
inputarray3np*inputarray4np[0]
Out[11]:
array([221388.897288, 123871.689162, 40683.176456, ..., 222221.415598,
73761.122266, 69851.803892])
# There is also a second version (if you need to pass more variables)
from cinpy import CreateCppDllv2
cppco = CreateCppDllv2(
modulename="cppsort",
# "module" will be added to "cppsort"
# This is how to import it after compiling the code:
# from cinpy.cppsortmodule import cppradixsort
cheader="""
#include <vector> // std::vector
#include <ppl.h>
""", # Code before the functions in the .cpp file -> imports etc.
cfooter="", # Code after the functions in the .cpp file
cfunctioname="cppradixsort",
# This is the name of the C++ function in Python, this is how you import it:
# from cinpy.cppsortmodule import cppradixsort
var_variations={
# cinpy creates various versions of the functions (I could not make
# templates/function overloading work with Python) Create a dict with
# all datadtypes that you want to use for each variable
"!C_DATA_DTYPE1!": ( # "bool",
"signed char",
"unsigned char",
"short",
"unsigned short",
"int",
"unsigned int",
"long",
"unsigned long",
"long long",
"unsigned long long", # "float",
# "double",
# "long double",
# "float complex",
# "double complex",
# "long double complex",
),
"!C_DATA_DTYPE2!": ("size_t",),
"!C_DATA_DTYPE3!": ( # "bool",
"signed char",
"unsigned char",
"short",
"unsigned short",
"int",
"unsigned int",
"long",
"unsigned long",
"long long",
"unsigned long long", # "float",
# "double",
# "long double",
# "float complex",
# "double complex",
# "long double complex",
),
"!C_DATA_DTYPE4!": ("size_t",),
"!C_DATA_DTYPE5!": ( # "bool",
"signed char",
"unsigned char",
"short",
"unsigned short",
"int",
"unsigned int",
"long",
"unsigned long",
"long long",
"unsigned long long", # "float",
# "double",
# "long double",
# "float complex",
# "double complex",
# "long double complex",
),
"!C_DATA_DTYPE6!": ("size_t",),
},
dtypemustbeequal=[("!C_DATA_DTYPE1!", "!C_DATA_DTYPE3!", "!C_DATA_DTYPE5!")],
# "!C_DATA_DTYPE1!", "!C_DATA_DTYPE3!", "!C_DATA_DTYPE5!" will always have the same Datatype
fu=rf"""
__declspec(dllexport) void variable_for_function_creation
(!C_DATA_DTYPE1! * indatav1,!C_DATA_DTYPE2! size1,
!C_DATA_DTYPE3! * indatav2,!C_DATA_DTYPE4! size2,
!C_DATA_DTYPE5! * indatav3,!C_DATA_DTYPE6! size3 )
{{
std::vector<!C_DATA_DTYPE1!> v(indatav1,
indatav1 + size1);
concurrency::parallel_radixsort(begin(v), end(v));
std::copy(v.begin(), v.begin()+size1, indatav3);
std::vector<!C_DATA_DTYPE1!> v2(indatav1, indatav1 + size1);
concurrency::parallel_buffered_sort(begin(v2), end(v2));
std::copy(v2.begin(), v2.begin()+size1, indatav2);
}}""",
# The C++ code, use the keys in the dict for the data types, don't change the function name: variable_for_function_creation
)
cppco.compile_cpp_code(
vcvarsall_bat=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat",
cl_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe",
link_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe",
compilerflags=("/std:c++20", "/Ferelease", "/EHsc", "/MT", "/O2", "/bigobj"),
) # Compile the code
#import the compiled code
from cinpy.cppsortmodule import cppradixsort
import numpy as np
inputarray = np.array([6,3,2,64,2,46],dtype=np.uint8)
npbufferedsort = np.zeros_like(inputarray)
npradixsort = np.zeros_like(inputarray)
len1=inputarray.size
len2=npbufferedsort.size
len3=npradixsort.size
# arguments always start with v + number, data dtype should be detected automatically
cppradixsort(v0=inputarray,v1=len1,v2=npbufferedsort,v3=len2,v4=npradixsort,v5=len3,)
print(inputarray)
print(npbufferedsort)
print(npradixsort)
# results
# [ 6 3 2 64 2 46]
# [ 2 2 3 6 46 64]
# [ 2 2 3 6 46 64]
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