Python error? Enum and strings

Python error? Enum and strings - Printable Version

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Python error? Enum and strings - tycarac - Dec-15-2018

Hi

To get the output 'first' as the printed enum value that I want , I have to use 'value[0]' instead of 'value'.

from enum import Enum

class BadEnum(Enum):
    def __str__(self):
       return self.value[0]

    FIRST = 'first',
    SECOND = 'second'


print(BadEnum.FIRST)

Is this an error in Python Enum code to use 'tuple' and not 'string'? If I use 'self.value' instead of 'self.value[0]', I get:
TypeError: __str__ returned non-string (type tuple)

RE: Python error? Enum and strings - Gribouillis - Dec-15-2018

I can't reproduce the bug with python 3.5 in Linux.

RE: Python error? Enum and strings - buran - Dec-15-2018

Note that you have a comma at the end of line 7. This way first is actually a tuple, not str. Remove the comma and it will work for BadEnum.FIRST
You will not have same error if you try to print BadEnum.SECOND as the code is now

RE: Python error? Enum and strings - tycarac - Dec-15-2018

Hey buran

Many thanks. You were right. I feel a bit silly having posted such a simple mistake.