Issue copying the borders
*Created originally on Bitbucket by [Uchiha_Madara (Uchiha Madara)](https://bitbucket.org/%7B59ae1067-80f2-47a1-9a0b-1abcf488c07f%7D/)* copying borders and and making changes in the copied borders reflects changes in the parent border too. However font, fill, alignment are working as expected. ``` #!python from openpyxl.styles import PatternFill, Border, Side, Alignment, Protection, Font,NamedStyle border1 = Border(left=Side(border_style=None,color='FF000000'), right=Side(border_style=None,color='FF000000'), top=Side(border_style=None,color='FF000000'), bottom=Side(border_style=None,color='FF000000'), diagonal=Side(border_style=None,color='FF000000'), diagonal_direction=0, outline=Side(border_style=None,color='FF000000'), vertical=Side(border_style=None,color='FF000000'), horizontal=Side(border_style=None,color='FF000000')) border2 = copy(border1) border2.bottom.border_style='hair' print(border1.bottom.border_style) # supposed to print None but prints 'hair' print(border2.bottom.border_style) ```
issue