How to create an array of structs of arbitrary size cython The Next CEO of Stack OverflowCython: creating an array throws “not allowed in a constant expression”Cython recursive struct declarationsgetting struct elements in CythonCreating C structs in CythonHow to use a cython definition file (pxd) without making it an extension ?Cython Memoryviews — From Array of Structs?Cython C-array initializationCython: create struct and only keep pointer to itReturning an array of structs in CythonIssue converting a python program to cython for speedupHow to initialize a struct to NULL in cython?

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How to create an array of structs of arbitrary size cython



The Next CEO of Stack OverflowCython: creating an array throws “not allowed in a constant expression”Cython recursive struct declarationsgetting struct elements in CythonCreating C structs in CythonHow to use a cython definition file (pxd) without making it an extension ?Cython Memoryviews — From Array of Structs?Cython C-array initializationCython: create struct and only keep pointer to itReturning an array of structs in CythonIssue converting a python program to cython for speedupHow to initialize a struct to NULL in cython?










0















I would like to know how can I create an array of structs in Cython that I can populate and make computations afterwards.



Example



Here I have the Cython code



%%cython 
cimport numpy as cnp
cimport cython


from collections import namedtuple

Couple = namedtuple('Couple', ['female', 'male'], verbose=False)

cdef struct CyCouple:
int female
int male


cpdef int np_cy_count_women_earning_more2(list py_couples):

cdef:
int count = 0, r, N
CyCouple cy_couples[100_0000] # THIS IS HARDCODED

N = len(py_couples)

make_CyCouple_array(py_couples, cy_couples, N)

for n in range(N):
r = cy_couples[n].female > cy_couples[n].male
count += r
return count


I would like to have a general versions instead of the definition in # THIS IS HARDCODED.



What could I do?










share|improve this question
























  • There is a lot of unnecessary code, if all you want to know is how to dynamically allocate cy_couples!

    – ead
    Mar 21 at 19:30











  • Possible duplicate of Cython: creating an array throws "not allowed in a constant expression"

    – DavidW
    Mar 21 at 19:42















0















I would like to know how can I create an array of structs in Cython that I can populate and make computations afterwards.



Example



Here I have the Cython code



%%cython 
cimport numpy as cnp
cimport cython


from collections import namedtuple

Couple = namedtuple('Couple', ['female', 'male'], verbose=False)

cdef struct CyCouple:
int female
int male


cpdef int np_cy_count_women_earning_more2(list py_couples):

cdef:
int count = 0, r, N
CyCouple cy_couples[100_0000] # THIS IS HARDCODED

N = len(py_couples)

make_CyCouple_array(py_couples, cy_couples, N)

for n in range(N):
r = cy_couples[n].female > cy_couples[n].male
count += r
return count


I would like to have a general versions instead of the definition in # THIS IS HARDCODED.



What could I do?










share|improve this question
























  • There is a lot of unnecessary code, if all you want to know is how to dynamically allocate cy_couples!

    – ead
    Mar 21 at 19:30











  • Possible duplicate of Cython: creating an array throws "not allowed in a constant expression"

    – DavidW
    Mar 21 at 19:42













0












0








0








I would like to know how can I create an array of structs in Cython that I can populate and make computations afterwards.



Example



Here I have the Cython code



%%cython 
cimport numpy as cnp
cimport cython


from collections import namedtuple

Couple = namedtuple('Couple', ['female', 'male'], verbose=False)

cdef struct CyCouple:
int female
int male


cpdef int np_cy_count_women_earning_more2(list py_couples):

cdef:
int count = 0, r, N
CyCouple cy_couples[100_0000] # THIS IS HARDCODED

N = len(py_couples)

make_CyCouple_array(py_couples, cy_couples, N)

for n in range(N):
r = cy_couples[n].female > cy_couples[n].male
count += r
return count


I would like to have a general versions instead of the definition in # THIS IS HARDCODED.



What could I do?










share|improve this question
















I would like to know how can I create an array of structs in Cython that I can populate and make computations afterwards.



Example



Here I have the Cython code



%%cython 
cimport numpy as cnp
cimport cython


from collections import namedtuple

Couple = namedtuple('Couple', ['female', 'male'], verbose=False)

cdef struct CyCouple:
int female
int male


cpdef int np_cy_count_women_earning_more2(list py_couples):

cdef:
int count = 0, r, N
CyCouple cy_couples[100_0000] # THIS IS HARDCODED

N = len(py_couples)

make_CyCouple_array(py_couples, cy_couples, N)

for n in range(N):
r = cy_couples[n].female > cy_couples[n].male
count += r
return count


I would like to have a general versions instead of the definition in # THIS IS HARDCODED.



What could I do?







cython






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Mar 21 at 19:33







David Buchaca

















asked Mar 21 at 19:09









David BuchacaDavid Buchaca

1113




1113












  • There is a lot of unnecessary code, if all you want to know is how to dynamically allocate cy_couples!

    – ead
    Mar 21 at 19:30











  • Possible duplicate of Cython: creating an array throws "not allowed in a constant expression"

    – DavidW
    Mar 21 at 19:42

















  • There is a lot of unnecessary code, if all you want to know is how to dynamically allocate cy_couples!

    – ead
    Mar 21 at 19:30











  • Possible duplicate of Cython: creating an array throws "not allowed in a constant expression"

    – DavidW
    Mar 21 at 19:42
















There is a lot of unnecessary code, if all you want to know is how to dynamically allocate cy_couples!

– ead
Mar 21 at 19:30





There is a lot of unnecessary code, if all you want to know is how to dynamically allocate cy_couples!

– ead
Mar 21 at 19:30













Possible duplicate of Cython: creating an array throws "not allowed in a constant expression"

– DavidW
Mar 21 at 19:42





Possible duplicate of Cython: creating an array throws "not allowed in a constant expression"

– DavidW
Mar 21 at 19:42












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