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- from __future__ import unicode_literals
- import six
- def csv_format(data):
- """
- Encapsulate any data which contains a comma within double quotes.
- """
- csv = []
- for value in data:
- # Represent None or False with empty string
- if value in [None, False]:
- csv.append('')
- continue
- # Force conversion to string first so we can check for any commas
- if not isinstance(value, six.string_types):
- value = '{}'.format(value)
- # Double-quote the value if it contains a comma
- if ',' in value:
- csv.append('"{}"'.format(value))
- else:
- csv.append('{}'.format(value))
- return ','.join(csv)
- def foreground_color(bg_color):
- """
- Return the ideal foreground color (black or white) for a given background color in hexadecimal RGB format.
- """
- bg_color = bg_color.strip('#')
- r, g, b = [int(bg_color[c:c + 2], 16) for c in (0, 2, 4)]
- if r * 0.299 + g * 0.587 + b * 0.114 > 186:
- return '000000'
- else:
- return 'ffffff'
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