# recursive version of length of a string

def lenRecur(aStr):
    '''
    aStr: a string
    
    returns: int, the length of aStr
    '''
    if aStr == '':
        return 0
    else:
        return 1 + lenRecur(aStr[1:])
# recursive version of length of a string

def lenRecur(aStr):
    '''
    aStr: a string
    
    returns: int, the length of aStr
    '''
    if aStr == '':
        return 0
    else:
        return 1 + lenRecur(aStr[1:])
# recursive version of length of a string aStr: a string
     
     returns: int, the length of aStr