Turn a list of strings into an `IntFlag`
I have a bunch of IntFlag types, and I expect to frequently convert lists of strings from config files into members of those types. My current plan is to extend IntFlag:
class BetterIntFlag(IntFlag):
@classmethod
def parse(cls, items):
value = cls(0)
for item in items:
value |= cls[item]
return value
I'm satisfied with this solution, but I can't help but feel that I must be missing a concise built-in way to do this.
I'm on 3.3 with backported enums.
python enums
asked Nov 21 '18 at 3:59
Thom Smith
10.9k23667
add a comment |
I have a bunch of IntFlag types, and I expect to frequently convert lists of strings from config files into members of those types. My current plan is to extend IntFlag:
class BetterIntFlag(IntFlag):
@classmethod
def parse(cls, items):
value = cls(0)
for item in items:
value |= cls[item]
return value
I'm satisfied with this solution, but I can't help but feel that I must be missing a concise built-in way to do this.
I'm on 3.3 with backported enums.
python enums
asked Nov 21 '18 at 3:59
Thom Smith
10.9k23667
add a comment |
I have a bunch of IntFlag types, and I expect to frequently convert lists of strings from config files into members of those types. My current plan is to extend IntFlag:
class BetterIntFlag(IntFlag):
@classmethod
def parse(cls, items):
value = cls(0)
for item in items:
value |= cls[item]
return value
I'm satisfied with this solution, but I can't help but feel that I must be missing a concise built-in way to do this.
I'm on 3.3 with backported enums.
python enums
asked Nov 21 '18 at 3:59
Thom Smith
10.9k23667
I have a bunch of IntFlag types, and I expect to frequently convert lists of strings from config files into members of those types. My current plan is to extend IntFlag:
class BetterIntFlag(IntFlag):
@classmethod
def parse(cls, items):
value = cls(0)
for item in items:
value |= cls[item]
return value
I'm satisfied with this solution, but I can't help but feel that I must be missing a concise built-in way to do this.
I'm on 3.3 with backported enums.
python enums
python enums
asked Nov 21 '18 at 3:59
Thom Smith
10.9k23667
asked Nov 21 '18 at 3:59
Thom Smith
10.9k23667
asked Nov 21 '18 at 3:59
Thom Smith
10.9k23667
asked Nov 21 '18 at 3:59
Thom Smith
10.9k23667
asked Nov 21 '18 at 3:59
Thom Smith
10.9k23667
10.9k23667
add a comment |
add a comment |
1 Answer
1
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oldest
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If by backport you mean aenum1, it's built-in:
from aenum import IntFlag
class Color(IntFlag):
red = 1
green = 2
blue = 4
and in use:
--> Color['red|blue']
<Color.blue|red: 5>
--> items = ['red', 'blue']
--> Color['|'.join(items)]
<Color.blue|red: 5>
1 Disclosure: I am the author of the Python stdlib Enum, the enum34 backport, and the Advanced Enumeration (aenum) library.
answered Nov 21 '18 at 16:16
Ethan Furman
35.8k1188150
Alas, I'm usingenum.pyfrom Python 3.6.5, which does not support that.
– Thom Smith
Nov 21 '18 at 18:02
In any case, given that you've made this suggestion, it seems safe to say that there's no built-in functionality for this in stdlib.
– Thom Smith
Nov 26 '18 at 17:44
@ThomSmith: You could blur the lines between names and values and define your own_missing_to handle calls likeColor('red blue')(or however you wanted your strings).
– Ethan Furman
Nov 26 '18 at 21:44
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
If by backport you mean aenum1, it's built-in:
from aenum import IntFlag
class Color(IntFlag):
red = 1
green = 2
blue = 4
and in use:
--> Color['red|blue']
<Color.blue|red: 5>
--> items = ['red', 'blue']
--> Color['|'.join(items)]
<Color.blue|red: 5>
1 Disclosure: I am the author of the Python stdlib Enum, the enum34 backport, and the Advanced Enumeration (aenum) library.
answered Nov 21 '18 at 16:16
Ethan Furman
35.8k1188150
Alas, I'm usingenum.pyfrom Python 3.6.5, which does not support that.
– Thom Smith
Nov 21 '18 at 18:02
In any case, given that you've made this suggestion, it seems safe to say that there's no built-in functionality for this in stdlib.
– Thom Smith
Nov 26 '18 at 17:44
@ThomSmith: You could blur the lines between names and values and define your own_missing_to handle calls likeColor('red blue')(or however you wanted your strings).
– Ethan Furman
Nov 26 '18 at 21:44
add a comment |
If by backport you mean aenum1, it's built-in:
from aenum import IntFlag
class Color(IntFlag):
red = 1
green = 2
blue = 4
and in use:
--> Color['red|blue']
<Color.blue|red: 5>
--> items = ['red', 'blue']
--> Color['|'.join(items)]
<Color.blue|red: 5>
1 Disclosure: I am the author of the Python stdlib Enum, the enum34 backport, and the Advanced Enumeration (aenum) library.
answered Nov 21 '18 at 16:16
Ethan Furman
35.8k1188150
Alas, I'm usingenum.pyfrom Python 3.6.5, which does not support that.
– Thom Smith
Nov 21 '18 at 18:02
In any case, given that you've made this suggestion, it seems safe to say that there's no built-in functionality for this in stdlib.
– Thom Smith
Nov 26 '18 at 17:44
@ThomSmith: You could blur the lines between names and values and define your own_missing_to handle calls likeColor('red blue')(or however you wanted your strings).
– Ethan Furman
Nov 26 '18 at 21:44
add a comment |
If by backport you mean aenum1, it's built-in:
from aenum import IntFlag
class Color(IntFlag):
red = 1
green = 2
blue = 4
and in use:
--> Color['red|blue']
<Color.blue|red: 5>
--> items = ['red', 'blue']
--> Color['|'.join(items)]
<Color.blue|red: 5>
1 Disclosure: I am the author of the Python stdlib Enum, the enum34 backport, and the Advanced Enumeration (aenum) library.
answered Nov 21 '18 at 16:16
Ethan Furman
35.8k1188150
If by backport you mean aenum1, it's built-in:
from aenum import IntFlag
class Color(IntFlag):
red = 1
green = 2
blue = 4
and in use:
--> Color['red|blue']
<Color.blue|red: 5>
--> items = ['red', 'blue']
--> Color['|'.join(items)]
<Color.blue|red: 5>
1 Disclosure: I am the author of the Python stdlib Enum, the enum34 backport, and the Advanced Enumeration (aenum) library.
answered Nov 21 '18 at 16:16
Ethan Furman
35.8k1188150
edited Nov 21 '18 at 16:38
answered Nov 21 '18 at 16:16
Ethan Furman
35.8k1188150
answered Nov 21 '18 at 16:16
Ethan Furman
35.8k1188150
answered Nov 21 '18 at 16:16
Ethan Furman
35.8k1188150
35.8k1188150
Alas, I'm usingenum.pyfrom Python 3.6.5, which does not support that.
– Thom Smith
Nov 21 '18 at 18:02
In any case, given that you've made this suggestion, it seems safe to say that there's no built-in functionality for this in stdlib.
– Thom Smith
Nov 26 '18 at 17:44
@ThomSmith: You could blur the lines between names and values and define your own_missing_to handle calls likeColor('red blue')(or however you wanted your strings).
– Ethan Furman
Nov 26 '18 at 21:44
add a comment |
Alas, I'm usingenum.pyfrom Python 3.6.5, which does not support that.
– Thom Smith
Nov 21 '18 at 18:02
In any case, given that you've made this suggestion, it seems safe to say that there's no built-in functionality for this in stdlib.
– Thom Smith
Nov 26 '18 at 17:44
@ThomSmith: You could blur the lines between names and values and define your own_missing_to handle calls likeColor('red blue')(or however you wanted your strings).
– Ethan Furman
Nov 26 '18 at 21:44
Alas, I'm using
enum.py from Python 3.6.5, which does not support that.– Thom Smith
Nov 21 '18 at 18:02
Alas, I'm using
enum.py from Python 3.6.5, which does not support that.– Thom Smith
Nov 21 '18 at 18:02
In any case, given that you've made this suggestion, it seems safe to say that there's no built-in functionality for this in stdlib.
– Thom Smith
Nov 26 '18 at 17:44
In any case, given that you've made this suggestion, it seems safe to say that there's no built-in functionality for this in stdlib.
– Thom Smith
Nov 26 '18 at 17:44
@ThomSmith: You could blur the lines between names and values and define your own
_missing_ to handle calls like Color('red blue') (or however you wanted your strings).– Ethan Furman
Nov 26 '18 at 21:44
@ThomSmith: You could blur the lines between names and values and define your own
_missing_ to handle calls like Color('red blue') (or however you wanted your strings).– Ethan Furman
Nov 26 '18 at 21:44
add a comment |
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