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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def to_clipboard(obj, excel=True, sep=None, **kwargs):
 # pragma: no cover """ Attempt to write text representation of object to the system clipboard The clipboard can be then pasted into Excel for example. Parameters obj : the object to write to the clipboard excel : boolean, defaults to True if True, use the provided separator, writing in a csv format for allowing easy pasting into excel. if False, write a string representation of the object to the clipboard sep : optional, defaults to tab other keywords are passed to to_csv Notes ----- Requirements for your platform - Linux: xclip, or xsel (with gtk or PyQt4 modules) - Windows: - OS X: """

    encoding = kwargs.pop('encoding', 'utf-8')

    # testing if an invalid encoding is passed to clipboard
    if encoding is not None and encoding.lower().replace('-', '') != 'utf8':
        raise ValueError('clipboard only supports utf-8 encoding')

    from pandas.io.clipboard import clipboard_set
    if excel is None:
        excel = True

    if excel:
        try:
            if sep is None:
                sep = '\t'
            buf = StringIO()

            # clipboard_set (pyperclip) expects unicode
            obj.to_csv(buf, sep=sep, encoding='utf-8', **kwargs)
            text = buf.getvalue()

            clipboard_set(text)
            return
        except TypeError:
            warnings.warn('to_clipboard in excel mode requires a single '
                          'character separator.')
    elif sep is not None:
        warnings.warn('to_clipboard with excel=False ignores the sep argument')

    if isinstance(obj, ABCDataFrame):
        # str(df) has various unhelpful defaults, like truncation
        with option_context('display.max_colwidth', 999999):
            objstr = obj.to_string(**kwargs)
    else:
        objstr = str(obj)
    clipboard_set(objstr)