How to use 'filter nan pandas' in Python

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74def filter_nan2none(value):
75 """Convert the NaN value to None, leaving everything else unchanged.
76
77 This function is meant to be used as a Django template filter. It
78 is useful in combination with filters that handle None (or any
79 false value) specially, such as the 'default' filter, when one
80 wants special treatment for the NaN value. It is also useful
81 before the 'format' filter to avoid the NaN value being formatted.
82
83 """
84 if is_nan(value):
85 return None
86 return value

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