def whereis(s1,s2):
    '''whereis(str, str) - > int/boolean
    
    Returns the index number of the first occurence of the single letter 
    string s2 in the string s1. Returns False if the parameters given are not 
    strings and if s2 is not a single letter in length.'''

    if ( type(s1) != str ) or ( type(s2) != str ):
        return False
    
    if len(s2) != 1:
        return False
    
    return s1.find(s2)


def reverse(original_list):
    '''reverse(list) - > list/boolean
    
    Given a list, returns a new list in which the elements of the original
    list have been reversed. Returns False if the parameter given is not a list. 
    '''
    
    if ( type(original_list) != list ) :
        return False

    new_list = []
    for element in original_list:
        new_list.insert(0,element)
    
    return new_list


def fix_capitalization(original_list):
    '''fix_capitalization(list) - > list/boolean

    Given a list of strings returns a new list of strings in which the
    capitalization of the original strings has been corrected. Returns
    False if the parameter given is not a string.'''

    if ( type(original_list) != list ) :
        Return False

    new_list = []
    for string in list:
        new_string = ''
        for char in string:
            if char == string[0]:
                new_string = new_string+char #Leaves the first character in 
                #the string unchanged.
            else:
                new_char = char.lower()
                new_string = new_string + new_char #Changes all other characters
                #in the string to lowercase.
        new_list.append(new_string)
    print new_list