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Creating a zero-filled pandas data frame
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140
You can try this:
d = pd.DataFrame(0, index=np.arange(len(data)), columns=feature_list)
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How to use the 'sweep' function
...own below:
> print(size)
Weight Waist Height
[1,] 130 26 140
[2,] 110 24 155
[3,] 118 25 142
[4,] 112 25 175
[5,] 128 26 170
> sweep(size, 2, c(10, 20, 30), "+")
Weight Waist Height
[1,] 140 46 170
[2,] 120 44 185
[3,] ...
Crontab Day of the Week syntax
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answered Sep 20 '13 at 14:26
fedorqui 'SO stop harming'fedorqui 'SO stop harming'
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efficient circular buffer?
...xrange(20):
... d.append(i)
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>>> d
deque([10, 11, 12, 13, 14, 15, 16, 17, 18, 19], maxlen=10)
There is a recipe in the docs for deque that is similar to what you want. My assertion that it's the most efficient rests entirely on the fact that it's implemented in C by an incredibly ...
How to get a specific output iterating a hash in Ruby?
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answered Aug 26 '15 at 14:56
tomascharadtomascharad
2,8801616 silver badges2424 bronze badges
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rspec 3 - stub a class method
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answered Jul 31 '14 at 18:49
Arup RakshitArup Rakshit
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Performance of foreach, array_map with lambda and array_map with static function
...ults are identical, confirming that the closure is only evaluated once.
2014-02-02 UPDATE: opcodes dump
Here are the opcode dumps for the three callbacks. First useForeach():
compiled vars: !0 = $numbers, !1 = $result, !2 = $number
line # * op fetch ext ...
Python creating a dictionary of lists
...e 'a' is not defined
– S Andrew
Nov 14 '18 at 13:18
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python pandas: apply a function with arguments to a series
... read answer.
– JohnE
Oct 15 '17 at 14:59
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Python pandas Filtering out nan from a data selection of a column of strings
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answered Mar 21 '14 at 8:33
EdChumEdChum
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