I have enum that used for communication between python server and c client.
I want to have the enum just in single file, prefer to use python enum class.
Also I prefer to avoid mixing with runtime parsing of C enum in python.
2
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@EthanFurman do you understand why it duplicate? the other question is much more complicated in C side, to create bi direction lookup table between string and int, while here need just C enumarye– arye2023-02-26 06:34:11 +00:00Commented Feb 26, 2023 at 6:34
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I think it is duplicate of stackoverflow.com/questions/65048495/… as arduino is c basedarye– arye2023-03-01 06:38:05 +00:00Commented Mar 1, 2023 at 6:38
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1 Answer
Optional solution is to have the enum in *.py file, which C file can include and python can import.
The file will look like:
#if 0
"""
#endif
typedef enum my_enum{
#if 0
"""
from enum import IntEnum, unique
@unique
class MyEnum(IntEnum):
#endif
FIRST = 0,
SECOND = 1,
THIRD = 2,
#if 0
"""
#endif
}my_enum_e;
#if 0
"""
#endif
The idea behind it is that Python ignores all the C preprocessor commands, as they are in Python triple-quoted strings, which is where I put the C only code.
In the other hand, C ignores everything inside #if 0 - where I put the python code.
The disadvantage in this structure is it bit confusing and I didn't find way to make the numbering automatic.
2 Comments
Ethan Furman
This has the even bigger disadvantage that in C your enum values are
0, 1, and 2, while in Python it is (0, ), (1, ), and (2,) -- 1-element tuples instead of integers.
arye
@EthanFurman If you are using Enum indeed you will get tuple. But with IntEnum I got integer