to replace if-else statements with loop in python

Using regular expression as global constant and have to check the regular expression regCheck in processloop fucntion also converting if -else statement with any loops( by removing "elif" since changed by loop)

`````````````````regex``````````````

regSingle = r'[ACGU]\d+[ACGU]&[ACGU]-?\d+[ACGU]'
regMulti = 'regSingle(|regSingle)*'
regAlt = 'regMulti(,regMulti)*'
regCheck = '^\s* regAlt \s*$' 

````````````````````````


```````````````````conversion of ifelse into loop``````````````
def processLoop():
    for index, record in enumerate(sRNAGene):
        mutation = sRNAGene[record].get("mutation")
if ("|" in mutation):   
            print("\n\n Multiple Evaluations using : \t", mutation)
            multiEval = mutation.split("|")
            for index , element in enumerate(multiEval):
                part_1, part_2, = element.split('&', 1)    
                boolsRNA(part_1, sRNAGene[record].get("fasta") ,sRNAGene[record].get("name"))
                boolsGene(part_2, sRNAGene[record].get("gene").get("Sequence") ,sRNAGene[record].get("gene").get("name"))
                sys.exit()
                complementBase(part_2, part_1)

        elif ("," in mutation):   
            print("\n\n Mutation with Bar ',' : \t", mutation)
         else:
             part_1, part_2 = mutation.split('&', 1)
             boolsRNA(part_1, sRNAGene[record].get("fasta") ,sRNAGene[record].get("name"))
             boolsGene(part_2, sRNAGene[record].get("gene").get("Sequence") ,sRNAGene[record].get("gene").get("name"))
             sys.exit()
           complementBase(part_2, part_1)