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How to select rows with one or more nulls from a pandas DataFrame without listing columns explicitly
... [2, 0, np.nan, 0, 9],
'num_specimen_seen': [10, np.nan, 1, 8, np.nan]})
# Helper : Gets NaNs for some row
def row_nan_sums(df):
sums = []
for row in df.values:
sum = 0
for el in row:
if el != el: # np.nan is never equal to itsel...
Using Transactions or SaveChanges(false) and AcceptAllChanges()?
...its correct state?
– mark smith
May 10 '09 at 19:32
33
@Mark: if by "roll-back" you mean, revert ...
Rank function in MySQL
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answered Jul 26 '10 at 9:40
Daniel VassalloDaniel Vassallo
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remove objects from array by object property
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answered May 10 '13 at 22:39
Ry-♦Ry-
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How do I search within an array of hashes by hash values in ruby?
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answered Feb 11 '10 at 14:11
Jordan RunningJordan Running
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Easiest way to compare arrays in C#
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answered Jul 12 '10 at 22:25
QuartermeisterQuartermeister
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Update relationships when saving changes of EF4 POCO objects
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edited Sep 4 '10 at 14:29
answered Sep 3 '10 at 11:37
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Using OR in SQLAlchemy
... of "OR"s is way faster than using "IN". Also "IN" is limited to a set of ~1000 entries, while "OR" is not.
– g.a
Sep 5 '18 at 21:13
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Does Git Add have a verbose switch
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Sahil MuthooSahil Muthoo
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How does the extend() function work in jQuery?
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edited Dec 24 '10 at 23:53
answered Dec 24 '10 at 23:47
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