Create case insensitive matching function

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I have created a matching function that looks like the following

def mapping(a):
  if a in ["A1" , "A2" , "A3" , "A4" , "A5" , "A6" , "A7"]:
    return "Avyayıbhava"
  elif a in ["Bs2" , "Bs3" , "Bs4" , "Bs5" , "Bs6" , "Bs7" , "Bsd" , "Bss" , "Bsu" , "Bsp" , "Bsg" , "Bvs" , "BvS" , "Bvp" , "BvU" , "Bsmn" , "Bb","BvP"]:
    return "Bahuvrıhi"
  elif a in ['Di' , "Ds" , "E"]:
    return "Dvandva"
  elif a in ["d" , "S"]:
    return "anya"
  elif a in ["T1" , "T2" , "T3" , "T4" , "T5" , "T6" , "T7" , "Tn" , "Tp" , "Tk" , "Tg" , "Td" , "Tdu" , "Tds" , "U" , "U2" , "U3" , "U4" , "U5" , "U7" , "Tm" , "Tb" , "K1" ,"k1" "K2" , "K3" , "K4" , "K5" , "K6" , "K7" , "Km"]:
    return "Tatpurusa"

The match cases that I have inserted are tags, but they could actually appear in any case format. So Bs2 could appear as BS2 or bS2 or bs2 but it needs to be matched as the same thing. So how do I make the above function case insensitive for the above-given match cases.

What I have tried:

Created the matching function

def mapping(a):
  if a in ["A1" , "A2" , "A3" , "A4" , "A5" , "A6" , "A7"]:
    return "Avyayıbhava"
  elif a in ["Bs2" , "Bs3" , "Bs4" , "Bs5" , "Bs6" , "Bs7" , "Bsd" , "Bss" , "Bsu" , "Bsp" , "Bsg" , "Bvs" , "BvS" , "Bvp" , "BvU" , "Bsmn" , "Bb","BvP"]:
    return "Bahuvrıhi"
  elif a in ['Di' , "Ds" , "E"]:
    return "Dvandva"
  elif a in ["d" , "S"]:
    return "anya"
  elif a in ["T1" , "T2" , "T3" , "T4" , "T5" , "T6" , "T7" , "Tn" , "Tp" , "Tk" , "Tg" , "Td" , "Tdu" , "Tds" , "U" , "U2" , "U3" , "U4" , "U5" , "U7" , "Tm" , "Tb" , "K1" ,"k1" "K2" , "K3" , "K4" , "K5" , "K6" , "K7" , "Km"]:
    return "Tatpurusa"

Posted 3-Jun-21 0:53am

adideva98

Updated 3-Jun-21 2:48am

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CPallini · Answer 1 · 2021-06-03T01:25:00

Change mapping this way:

Python

def mapping(a):
  a = a.upper()
  if a in ["A1" , "A2" , "A3" , "A4" , "A5" , "A6" , "A7"]:
    return "Avyayıbhava"
  elif a in ["BS2" , "BS3" , "BS4" , "BS5" , "BS6" , "BS7" , "BSD" , "BSS" , "BSU" , "BSP" , "BSG" , "BVS", "BVP" , "BVU" , "BSMN" , "BB","BVP"]:
    return "Bahuvrıhi"
# ...

That is change the input string, as well all the list items to upper case (removing the duplicates).

Richard MacCutchan · Answer 2 · 2021-06-03T01:29:00

Solution 2

Use one of the string class methods[^] to change the case as appropriate.

Posted 3-Jun-21 1:29am

Richard MacCutchan

Patrice T · Answer 3 · 2021-06-03T02:48:00

Quote:
Create case insensitive matching function

Generally speaking, either you have an insensitive comparison operator, either you force the case.
First, uppercase or lowercase is your choice.
Second, change your source to make all list of strings with same case.
Third, force parameter to same case as the strings

Python

def mapping(a):
  a=a.upper() # force parameter to uppercase
  if a in ["A1" , "A2" , "A3" , "A4" , "A5" , "A6" , "A7"]:
    return "Avyayıbhava"
  ...

Create case insensitive matching function

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