python使用enum进行枚举的比较

import enum

class BugStatus(enum.Enum):

    new = 7

    incomplete = 6

    invalid = 5

    wont_fix = 4

    in_progress = 3

    fix_committed = 2

    fix_released = 1

actual_state = BugStatus.wont_fix

desired_state = BugStatus.fix_released

print('Equality:',

      actual_state == desired_state,

      actual_state == BugStatus.wont_fix)

print('Identity:',

      actual_state is desired_state,

      actual_state is BugStatus.wont_fix)

print('Ordered by value:')

try:

    print('\n'.join('  ' + s.name for s in sorted(BugStatus)))

except TypeError as err:

    print('  Cannot sort: {}'.format(err))

# output

# Equality: False True

# Identity: False True

# Ordered by value:

#   Cannot sort: '<' not supported between instances of 'BugStatus' and 'BugStatus'