split a string | Python Fiddle

def split_string(source, splitlist):
    output = []
    atsplit = True
    for char in source:
        if char in splitlist:
            atsplit = True
            print output
        else:
            if atsplit:
                output.append(char)
                atsplit = False
                print output
            else:
                #add character to last word
                output[-1] = output[-1] + char 
    return output
                
out = split_string("This is a test-of the, separation code", " ,!-")
print out

['T']
['This']
['This', 'i']
['This', 'is']
['This', 'is', 'a']
['This', 'is', 'a']
['This', 'is', 'a', 't']
['This', 'is', 'a', 'test']
['This', 'is', 'a', 'test', 'o']
['This', 'is', 'a', 'test', 'of']
['This', 'is', 'a', 'test', 'of', 't']
['This', 'is', 'a', 'test', 'of', 'the']
['This', 'is', 'a', 'test', 'of', 'the']
['This', 'is', 'a', 'test', 'of', 'the', 's']
['This', 'is', 'a', 'test', 'of', 'the', 'separation']
['This', 'is', 'a', 'test', 'of', 'the', 'separation', 'c']
['This', 'is', 'a', 'test', 'of', 'the', 'separation', 'code']

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