我使用xlwt Python 库在 excel 工作簿中写入数据。
现在我在向 excel 单元格添加背景颜色时遇到了一些问题。
例如，我在 RGB(10,20,30) 中有下一种颜色，最简单的方法是什么？有没有办法将此颜色设置为单元格？
我发现只有这篇文章与我的问题相似。
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49323 次
4 回答
19
在此示例中，我展示了如何为单元格设置背景颜色，您可以运行它以获得结果：
from xlwt import Workbook
import xlwt
book = Workbook()
sheet1 = book.add_sheet('Sheet 1')
for i in range(0, 100):
st = xlwt.easyxf('pattern: pattern solid;')
st.pattern.pattern_fore_colour = i
sheet1.write(i % 24, i // 24, 'Test text', st)
book.save('simple.xls')
于 2012-05-10T21:12:43.237 回答
7
我有这个问题，我做了很多搜索
最后我找到了一个合适 的解决方案：解决方案的来源
它工作得很好！
只需将此类添加到您的项目并设置 excel 颜色：
class ColorMatcher(object):
"""
the source is in : http://www.archivum.info/python-excel@googlegroups.com/2012-09/00014/Re-(pyxl)-Re-Background-with-any-rgb-value.html
Prior to Excel 2007, Excel only had color
indexes, and that's all that xlwt supports. Maybe this will help,
though. It use a ColorMatcher that takes an RGB input and tries to
return the closest matching Excel color index:
"""
def __init__(self):
self.reset()
def reset(self):
self.unused_colors = set(self.xlwt_colors)
# Never use black.
self.unused_colors.discard((0, 0, 0))
#Culled from a table at http://www.mvps.org/dmcritchie/excel/colors.htm
xlwt_colors=[
(0,0,0), (255,255,255), (255,0,0), (0,255,0), (0,0,255), (255,255,0),
(255,0,255), (0,255,255), (0,0,0), (255,255,255), (255,0,0), (0,255,0),
(0,0,255), (255,255,0), (255,0,255), (0,255,255), (128,0,0), (0,128,0),
(0,0,128), (128,128,0), (128,0,128), (0,128,128), (192,192,192),
(128,128,128), (153,153,255), (153,51,102), (255,255,204),
(204,255,255), (102,0,102), (255,128,128), (0,102,204), (204,204,255),
(0,0,128), (255,0,255), (255,255,0), (0,255,255), (128,0,128),
(128,0,0), (0,128,128), (0,0,255), (0,204,255), (204,255,255),
(204,255,204), (255,255,153), (153,204,255), (255,153,204),
(204,153,255), (255,204,153), (51,102,255), (51,204,204), (153,204,0),
(255,204,0), (255,153,0), (255,102,0), (102,102,153), (150,150,150),
(0,51,102), (51,153,102), (0,51,0), (51,51,0), (153,51,0), (153,51,102),
(51,51,153), (51,51,51)
]
@staticmethod
def color_distance(rgb1, rgb2):
# Adapted from Colour metric by Thiadmer Riemersma,
# http://www.compuphase.com/cmetric.htm
rmean = (rgb1[0] + rgb2[0]) / 2
r = rgb1[0] - rgb2[0]
g = rgb1[1] - rgb2[1]
b = rgb1[2] - rgb2[2]
return (((512 + rmean) * r * r) / 256) + 4 * g * g\
+ (((767 - rmean) * b * b) / 256)
def match_color_index(self, color):
"""Takes an "R,G,B" string or wx.Color and returns a matching xlwt
color.
"""
if isinstance(color, int):
return color
if color:
if isinstance(color, basestring):
rgb = map(int, color.split(','))
else:
rgb = color.Get()
distances = [self.color_distance(rgb, x) for x in self.xlwt_colors]
result = distances.index(min(distances))
self.unused_colors.discard(self.xlwt_colors[result])
return result
def get_unused_color(self):
"""Returns an xlwt color index that has not been previously returned by
this instance. Attempts to maximize the distance between the color and
all previously used colors.
"""
if not self.unused_colors:
# If we somehow run out of colors, reset the color matcher.
self.reset()
used_colors = [c for c in self.xlwt_colors if c not in
self.unused_colors]
result_color = max(self.unused_colors,
key=lambda c: min(self.color_distance(c, c2)
for c2 in used_colors))
result_index = self.xlwt_colors.index(result_color)
self.unused_colors.discard(result_color)
return result_index
于 2012-11-19T10:54:37.300 回答
3
GREEN_TABLE_HEADER = easyxf(
'font: bold 1, name Tahoma, height 160;'
'align: vertical center, horizontal center, wrap on;'
'borders: left thin, right thin, top thin, bottom thin;'
'pattern: pattern solid, pattern_fore_colour green, pattern_back_colour green'
)
overviewSheet.row(rowCursor).write(col_0, 'Issue', GREEN_TABLE_HEADER)
于 2013-04-15T09:41:04.133 回答
2
我推荐使用 XlsxWriter 模块，也有很棒的功能http://xlsxwriter.readthedocs.io/
于 2017-07-06T21:40:37.473 回答