I'm using xlwt to do some Excel sheets generation, but it appears that whenever I try to merge cells in line, Python throws an AssertionError, even for a code as simple as:
import xlwt
wb = xlwt.Workbook(encoding = 'latin-1')
ws = wb.add_sheet('hey')
ws.write_merge(0,0,8,0,"hi")
wb.save("test.xls")
Could anyone please help me on this? Did I miss something? Thank you ever so much.
TLDR;
Perhaps your call should be:
ws.write_merge(0,0,0,8,"hi")
Explaination: Fuller stack trace:
AssertionError Traceback (most recent call last)
<ipython-input-6-c6b20b7b1b27> in <module>()
----> 1 ws.write_merge(0,0,8,0)
/usr/local/lib/python2.7/dist-packages/xlwt/Worksheet.pyc in write_merge(self, r1, r2, c1, c2, label, style)
1110
1111 def write_merge(self, r1, r2, c1, c2, label="", style=Style.default_style):
-> 1112 assert 0 <= c1 <= c2 <= 255
1113 assert 0 <= r1 <= r2 <= 65535
1114 self.write(r1, c1, label, style)
I believe (I'm not sure but please correct me if I am wrong here) write_merge is used to merge multiple cells (portion of worksheet) into a single cell. The arguments are (I guess!) start_row, end_row, start_col, end_col resp. It seems natural to me that c1 <= c2 and r1 <= r2 must hold true to have a real portion to merge into a single cell.