python - How to access an enum type by value in cython -


मुझे कुछ कोड दिया गया था जो इस तरह दिखता है:

"header.hpp" में: 

  enum वर्ग my_enum_type {val1 = 0; ...}   
 "header_lib.pyx" में:  
  cdef extern से "header.hpp": enum my_enum_type: val1 = 0; ... ...   
 बाद में "header_lib.pyx":  
  def foo (): ... वापस my_enum_type.val1   
 मुझे बताया गया था कि इसमें कोई समस्या नहीं होनी चाहिए, लेकिन यह मेरे अनुभव से अभी नहीं है, और इस पोस्ट में स्पष्ट है:  
 हालांकि, यह "val1" को अपने आप में नहीं पहचानता है, अगर मैं "वापसी val1" लिखता हूं ऐसा करने का सही तरीका क्या है?   
 
 
 आप एक  enum  को घोषित कर सकते हैं के रूप में:  
  ctypedef enum विकल्प: OPT1, OPT2, OPT3   
 या  
  ctypedef enum विकल्प: OPT1, OPT2, OPT3   
 और और उदाहरण हो सकता है:  
  def मुख्य (): cdef विकल्प परीक्षण परीक्षण = OPT2 f (test) cdef void f (options) Inp): यदि inp == OPT1: प्रिंट ('OPT1') elif inp == OPT2: प्रिंट ('OPT2') elif inp == OPT3: प्रिंट ('OPT3')   
 जब  मुख्य ()  चल रहा है तो आपको  "OPT2"  मुद्रित दिखाई देगा। आप  test  को  c  या  C ++  फ़ंक्शन को उसी तरह से पास कर सकते हैं जैसा कि  cdef  के लिए दिखाया गया है फ़ंक्शन।

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