add set_range_style by a simple way

[Harpsichord1207]

No description provided.

[kevmo314]

Thank you for your contribution! For a little more context, what's the motivation for this method instead of requiring the user to explicitly iterate over the range?

[coveralls]

Coverage decreased (-1.7%) to 91.615% when pulling 731ed89 on Harpsichord1207:dev into 70dd88a on kz26:dev.

[Harpsichord1207]

Thank you for your contribution! For a little more context, what's the motivation for this method instead of requiring the user to explicitly iterate over the range?

Hello, sorry to reply late, in my case, I need to merge some cells, but when i merged them, there 's something wrong with boders, and i found a same issue #74, so i try to write a function to fix it.

[kevmo314]

Thanks, could you add a test and some examples to the README?

[kevmo314]

I'm not sure if this is implemented as users would typically expect. If I set the borders to all four sides and then make a 2x2 range, wouldn't this add borders inside the range as well?

[Harpsichord1207]

Yes, it wouldn't add borders to inner cells, but I found there are some more complicated situations that the function may not support, and I also should consider the funtion complexity. I will try a better way.

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the 2x2 range example:

from pyexcelerate import Workbook, Style, Font, Alignment
from pyexcelerate.Border import Border
from pyexcelerate.Borders import Borders

data = [[1, 2, 3], [4, 5, 6], [7, 8, 9], ["a", "b", "c"]]
wb = Workbook()
ws = wb.new_sheet("test", data=data)
style = Style(
    font=Font(bold=True),
    borders=Borders(left=Border(), right=Border(), top=Border(style="double"), bottom=Border(style="double")),
    alignment=Alignment('center', 'center')
)

range = ("B2", "C3")
ws.range(*range).merge()
ws.set_range_style(*range, style)
wb.save("test.xlsx")