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Examples: B4 -> cell(2, 4) B4:Z100 -> cells(2, 4, 26, 100) s(\w+(?::\w+)?)s2^([A-Z]+)([1-9][0-9]*)(?::([A-Z]+)([1-9][0-9]*))?$s cell(%s, %s)scells(%s, %s, %s, %s)RBN(RRRR R"RRRX( RRYRRR#R$R%R&R((s./usr/lib64/python2.7/Demo/tkinter/guido/ss1.pyRs    cCst|t|S(sETranslate a cell coordinate to a fancy cell name (e.g. (1, 1)->'A1').(RFRH(RR ((s./usr/lib64/python2.7/Demo/tkinter/guido/ss1.pyRscCsI|j}d}x0|D](}|dt|tdd}qW|S(sCTranslate a column name to number (e.g. 'A'->1, 'Z'->26, 'AA'->27).iitAi(tuppertord(RRtc((s./usr/lib64/python2.7/Demo/tkinter/guido/ss1.pyRs   &cCsJd}x=|rEt|dd\}}t|td|}q W|S(s6Translate a column number to name (e.g. 1->'A', etc.).RBiiR(tdivmodtchrR(RRR((s./usr/lib64/python2.7/Demo/tkinter/guido/ss1.pyRFs  tSheetGUIcBseZdZddddZdZdZdZdZd Zd Z d Z d Z d Z dZ dZeZdZdZdZdZdZdZdZdZdZdZdZdZRS(s7Beginnings of a GUI for a spreadsheet. 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