@cython.cfunc should reject dunder methods Error Reporting defect good first issue

#3503 opened Apr 12, 2020 by ram-bv

Document how to embed Cython modules in C/C++ applications Documentation good first issue help wanted

#3510 opened Apr 14, 2020 by scoder

3

`from . cimport modulename` tries to search in parent package from `__init__.pxd`. Build System defect good first issue

#3442 opened Mar 17, 2020 by will-ca

1

C++: classes in classes, cimport not consistent C++ Type Analysis defect good first issue

#3074 opened Aug 9, 2019 by gerion0

1

Cython incorrectly casts with ctypedef and bint Type Analysis defect good first issue help wanted

#3066 opened Aug 2, 2019 by mbuesch

3

Specifying __bool__ and __nonzero__ Type Analysis enhancement good first issue

#3056 opened Jul 28, 2019 by rinslow

3

Documentation example doesn't work Documentation good first issue

#3069 opened Aug 4, 2019 by realead

Cython ValueError: no signature found for builtin <cyfunction.lambda> Code Generation defect good first issue help wanted

#2983 opened Jun 4, 2019 by zyukyunman

15

Cython mishandles PEP-3135 __class__ cell in methods P: blocker Python Semantics defect good first issue help wanted

#2912 opened Apr 3, 2019 by MisterKeefe

1

Embedded signature doc behavior for classes different from regular Python Cython Language Feature enhancement good first issue help wanted

#2876 opened Mar 2, 2019 by david-cortes

2

Add warnings about "obviously unintended" code Error Reporting feature good first issue help wanted

#2814 opened Jan 25, 2019 by scoder

Cythonize/Cython compilation fails to import/recognize `.pxd` from external modules that only have `__init__.so` Build System enhancement good first issue

#2886 opened Mar 4, 2019 by etc0de

4

Integrate "cython_freeze" into "--embed" Build System Tools feature good first issue help wanted

#2849 opened Feb 17, 2019 by scoder

Cython differs from CPython: unexpected integer overflow Type Analysis defect good first issue

#2866 opened Feb 26, 2019 by mbuzdalov

1

Speed up relative re-imports into absolute imports Code Generation Optimization enhancement good first issue help wanted

#2862 opened Feb 23, 2019 by scoder

4

Cache constant frozen-sets Code Generation Optimization good first issue

#2741 opened Nov 30, 2018 by scoder

Small mistake in the documentation ? Documentation

#2956 opened May 16, 2019 by AdelKS

2

std::any C++ Library feature good first issue help wanted

#2633 opened Sep 28, 2018 by WarShoe

1

Special cases in iterable unpacking Python Semantics good first issue help wanted

#2585 opened Aug 28, 2018 by scoder

Crash when bounds of prange() are Python objects Code Generation defect good first issue help wanted

#2504 opened Jul 18, 2018 by scoder

2

stdint compat for windows Code Generation Library good first issue help wanted

#2570 opened Aug 22, 2018 by jbrockmendel

4

Document @cython.compile Documentation

#2770 opened Dec 27, 2018 by h5rdly

4

Clarify whether cdef class attributes must have a cdef

#3154 opened Sep 22, 2019 by rebecca-palmer

3

Special-case variable-length array error message Error Reporting enhancement

#3502 opened Apr 12, 2020 by EpicWink

1

asyncio.iscoroutinefunction returns false for Cython async function objects Python Semantics defect good first issue help wanted

#2273 opened May 17, 2018 by danigosa

25

Documentation provides invalid SSL certificate

#3059 opened Jul 29, 2019 by fuglede

Implement reversed C++ iteration good first issue help wanted

#2225 opened May 1, 2018 by scoder

3

Speed up method calls by avoiding bound method instantiation Optimization good first issue help wanted

#2242 opened May 5, 2018 by scoder

In-place arithmetic operators of memoryviews behave differently from those of ndarrays

#3403 opened Mar 9, 2020 by grothesque

Options.emit_code_comments is not used Build System Documentation defect

#2740 opened Nov 30, 2018 by yuriescl

5

REQ: recipe/docs for creating a buffer-protocol class by wrapping another

#3048 opened Jul 18, 2019 by jbrockmendel

1

Includes/libcpp does not expose `std::vector::emplace_back(...)` C++ Library enhancement good first issue help wanted

#2171 opened Mar 21, 2018 by pitrou

1

Python wrappers are not profiled separately when binding=True Code Generation defect good first issue help wanted

#2137 opened Mar 10, 2018 by mhsmith

2

Coercing a sliced C array to Python should create a list Cython Language Feature Type Analysis enhancement good first issue help wanted

#2159 opened Mar 17, 2018 by scoder

3

Pythran fallback not used for numpy call Pythran enhancement good first issue

#2126 opened Mar 4, 2018 by serge-sans-paille

3

Speed up f-string float formatting Code Generation Optimization enhancement good first issue help wanted performance

#2195 opened Mar 31, 2018 by scoder

Support special binary methods ("__add__" etc.) as Python does P: blocker Python Semantics good first issue help wanted

#2056 opened Dec 28, 2017 by malinoff

5

Implement @total_ordering for cdef classes Cython Language Feature good first issue help wanted

#2090 opened Feb 2, 2018 by scoder

9

Ship `cython.py` in a separate package good first issue help wanted

#1981 opened Nov 5, 2017 by scoder

Simplify compilation of complete applications Build System enhancement good first issue help wanted

#2011 opened Nov 18, 2017 by scoder

5

Cython should warn if you have a property redefining a cdef attribute

#2981 opened Jun 2, 2019 by ionelmc

2

Overflow error in doctests Code Generation defect good first issue help wanted

#1911 opened Oct 4, 2017 by toddrme2178

7

Cygdb not working with recent virtualenvs Debugger good first issue help wanted

#1961 opened Oct 29, 2017 by BertrandBordage

5

Embedded signature uses Cython syntax even if source code does not Cython Language Feature enhancement

#3150 opened Sep 20, 2019 by dgrunwald

2

Cython line profiling does not work on the last function defined defect good first issue help wanted

#1947 opened Oct 23, 2017 by pganssle

4

keyword args appear as positional in method signature for cdef class Code Generation defect good first issue help wanted

#1864 opened Sep 9, 2017 by johnyf

8

Error: command 'build_ext' has no such option 'cython_c_in_temp' Documentation enhancement

#2071 opened Jan 14, 2018 by dmitry-kabanov

3

numpy.ufunc size check insists on exact size match

#2799 opened Jan 16, 2019 by TimoRoth

cygdb tests are failing Debugger Testing defect good first issue help wanted

#1717 opened May 27, 2017 by lindsayad

6

Error message while accessing a non-existent method of a class without gil can be improved. Error Reporting enhancement good first issue help wanted

#1629 opened Mar 12, 2017 by MechCoder

1

cimport does not search in `$HOME/.local/`

#2525 opened Jul 30, 2018 by grothesque

cythonize doesn't work with cython_compile_time_env Build System defect good first issue help wanted

#1572 opened Jan 2, 2017 by sirfz

3

Reconsider inspect.iscoroutine() etc. Python Semantics unclear

#2609 opened Sep 16, 2018 by scoder

1

Adding __builtin_prefetch

#2518 opened Jul 25, 2018 by jakirkham

1

Any ideas to improve the documentation?

#2245 opened May 5, 2018 by gabrieldemarmiesse

25

Documentation of language basics "Conditional Compilation" is wrong and broken for Windows

#1998 opened Nov 14, 2017 by derekbrokeit

1

Documentation bug: installing package without cython help wanted

#1941 opened Oct 17, 2017 by leftys

3

compile failed when using fused for numpy ndarray dtype

#2210 opened Apr 21, 2018 by hqsh

1

position of const in declarations matters Documentation

#1475 opened Sep 28, 2016 by tgarc

2

Variable naming seems to be taken from .pxd in Cython 0.27.0

#1888 opened Sep 26, 2017 by honnibal

2

Building example.pyx in virtual environment

#2068 opened Jan 11, 2018 by jamespeterschinner

numpy __init__.pxd changes dtype.type?

#2022 opened Nov 24, 2017 by jbrockmendel

Assigning __doc__ in a cdef class should set tp_doc = NULL

#1636 opened Mar 17, 2017 by jdemeyer

no_gc_clear does not work on subclasses of Type.

#1821 opened Aug 15, 2017 by rainwoodman

Missing documentation: Python Objects

#1587 opened Jan 22, 2017 by KeyWeeUsr

docs error: cythonize(include_path=x) does not set C include path

#1480 opened Oct 7, 2016 by epruesse

12

Bazel BUILD file not usable with python3.

#1674 opened Apr 13, 2017 by ioctl0

Documentation site partially broken due to redirects

#1443 opened Aug 19, 2016 by WoLpH

A false warning ?

#1525 opened Nov 14, 2016 by tzickel

Iterating over const C++ containers with "for .. in" syntax not const correct.

#1451 opened Aug 26, 2016 by molpopgen

5

fused function dispatch is slow for Python calls Code Generation enhancement good first issue help wanted

#1385 opened Jun 14, 2014 by robertwb

3

Python classes defining __slots__ should automatically compile to extension classes Optimization enhancement good first issue help wanted

#995 opened Oct 22, 2009 by robertwb

2

Add note about numpy.get_include to the docs. Documentation defect

#889 opened Dec 12, 2009 by robertwb

1

Integrate "Fast numerical computations in Cython" paper into docs Documentation defect

#942 opened Sep 30, 2009 by robertwb

2

Document the autotestdict directive (#387) Documentation defect

#950 opened Oct 3, 2009 by robertwb

1

Integrate "Cython Tutorial" paper into docs Documentation defect

#943 opened Sep 30, 2009 by robertwb

Document feature: packed struct Documentation defect

#855 opened Apr 23, 2009 by robertwb

3

Documentation: Buffer slot/PEP 3118 special functions Documentation defect

#870 opened May 5, 2009 by robertwb