used_range
Used Range of Sheet.
Returns:
Return type: xw.Range
last_cell
Returns the bottom right cell of the specified range. Read-only.
Returns:
Return type: Range
import xlwings as xw
wb = xw.Book(r'F:\xlwings\OriginalData.xlsx')
sht = wb.sheets[0]
info = sht.used_range
nrows = info.last_cell.row
print(nrows)
ncolumns = info.last_cell.column
print(ncolumns)