How can i put multiple line of "if elif " in one line Python

Question

This is my code and i want to put this all in one line:

def GetKey(self, key):

    if key == "externalCode":
        return "ExternalCode"
    elif key == "name":
        return "Name"
    elif key == "description":
        return "Description"
    elif key == "remind-indays":
        return "RemindInDays"
    elif key == "is-delegate-supported":
        return "IsDelegateSupported"
    elif key == "escalation":
        return "Escalation"

i want to put this all in one line, it looks a lot of line of code. — Faraz Khan Yz, Jan 07 '20 at 09:32
If you have all those relations in a dictionary, then the one line would be `return mydict[key]`. — khelwood, Jan 07 '20 at 09:34
I.T Delinquent can you help me to convert it in python switch? — Faraz Khan Yz, Jan 07 '20 at 09:34
@FarazKhan Python doesn't have `switch`, you just said that. — Barmar, Jan 07 '20 at 09:35
Do you want to know out of curiosity? Or do you need to solve this problem? If it's the second one, then that can be done as: `def GetKey(key):return (''.join(s.title() for s in key.split('-')))` — Sayandip Dutta, Jan 07 '20 at 09:39

Barmar · Answer 1 · 2020-01-07T09:44:44.043

2

Use a dictionary.

key_map = {"externalCode": "ExternalCode", "name": "Name", "description": "Description", "remind-indays": "RemindInDays", "is-delegate-supported": "IsDelegateSupported", "escalation": "Escalation"}

def GetKey(self, key):
    return key_map[key];

This will raise an error if it's given an invalid key. If you really want to return None (as your function does), use the dict.get() method.

def getKey(self, key):
    return key_map.get(key)

edited Jan 07 '20 at 09:44

answered Jan 07 '20 at 09:35

Barmar

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Why use try/except when there's a [convenience method](https://docs.python.org/3/library/stdtypes.html#dict.get) on dicts for this already... – PyPingu Jan 07 '20 at 09:43
@PyPingu Good point, I've update the answer to show multiple ways. – Barmar Jan 07 '20 at 09:45

score 1 · Answer 2 · answered Jan 07 '20 at 09:39

1

you can use a dict instead of your function:

GET_KEY = {
    "externalCode": "ExternalCode",
    "name": "Name",
    "description": "Description",
    "remind-indays": "RemindInDays",
    "is-delegate-supported": "IsDelegateSupported",
    "escalation": "Escalation"}

GET_KEY.get("externalCode")

output:

'ExternalCode'

answered Jan 07 '20 at 09:39

kederrac

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Thanks, it helped to make it easy :) – Faraz Khan Yz Jan 07 '20 at 09:43

Shweta Chandel · Answer 3 · 2020-01-07T09:43:56.003

0

Improved based on suggestions.

word = 'name'
d = {'externalCode': 'ExternalCode', "name": "Name", "description": "Description"}

if word in d:
    word = d[word]
print(word)

edited Jan 07 '20 at 09:43

answered Jan 07 '20 at 09:35

Shweta Chandel

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Why use a loop when you can just use `d[word]`? – Barmar Jan 07 '20 at 09:36
@Barmar How would you handle the exception when your word isn't in the dict? – Shweta Chandel Jan 07 '20 at 09:38
Thanks, u solved my problem. Now my code looks perfect and clean :) def GetKey(self, key): d = {'externalCode': 'ExternalCode', "name": "Name", "description": "Description", "is-delegate-supported":"IsDelegateSupported"} return d[key] – Faraz Khan Yz Jan 07 '20 at 09:38
1

@ShwetaChandel Either `if word in d:` or `try/except`. – Barmar Jan 07 '20 at 09:39
See how I do it in my answer. – Barmar Jan 07 '20 at 09:40
@Barmar Yeah, I try to avoid try/except. But other alternative is better. – Shweta Chandel Jan 07 '20 at 09:41
Or you could just use the builtin [`dict.get`](https://stackoverflow.com/questions/11041405/why-dict-getkey-instead-of-dictkey) method designed exactly for this purpose... – PyPingu Jan 07 '20 at 09:41
Probably the best solution is to let it signal an error, since another key probably shouldn't be given in the first place. – Barmar Jan 07 '20 at 09:43

score 0 · Accepted Answer · edited Jan 07 '20 at 09:42

0

def stackflow(x):
    key = {
        "externalCode": "ExternalCode",
        "name": "Name",
        "description": "Description",
        "remind-indays": "RemindInDays",
        "is-delegate-supported": "IsDelegateSupported",
        "escalation": "Escalation"
    }
    return key[x]

edited Jan 07 '20 at 09:42

kederrac

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answered Jan 07 '20 at 09:40

Bhosale Shrikant

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How can i put multiple line of "if elif " in one line Python

4 Answers4