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get list from pandas dataframe column
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Example conversion:
Numpy Array -> Panda Data Frame -> List from one Panda Column
Numpy Array
data = np.array([[10,20,30], [20,30,60], [30,60,90]])
Convert numpy array into Panda data frame
dataPd = pd.DataFrame(data = data)
print(dataPd)
0 1 2
0 10 20 30
1 20 30 60
2 ...
What's the fastest way to loop through an array in JavaScript?
I learned from books that you should write for loop like this：
22 Answers
22
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Loop backwards using indices in Python?
I am trying to loop from 100 to 0. How do I do this in Python?
15 Answers
15
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Is there a “null coalescing” operator in JavaScript?
...are considered NOT NULL and therefore count as actual values. If you come from a .net background, this will be the most natural feeling solution.
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bash HISTSIZE vs. HISTFILESIZE?
...ntain HISTFILESIZE=10 lines.
You now have 10 commands in your history - 5 from a previous session and the last 5 that you just typed in the session you just finished.
When you start a new session, you start over at 1 with a HISTFILE of HISTFILESIZE=10.
Example 3:
HISTFILESIZE=5 and HISTSIZE=10
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HEAD and ORIG_HEAD in Git
...ich "git commit" would make a new one. " -- good to remember, thanks! Also from @VonC, 'It is the commit "git commit" builds on top of, and "git diff --cached" and "git status" compare against.'
– Minqi Pan
May 7 '12 at 2:13
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How to get a reference to current module's attributes in Python
...tion or method, this is the module
where it is defined, not the module
from which it is called).
http://docs.python.org/library/functions.html#globals
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remove all variables except functions
...side note, I'll be darned if I can figure the difference between those two from their documentation).
– Josh O'Brien
Nov 29 '11 at 17:04
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How to change a command line argument in Bash?
...ded to the two (hence the 2 in the notation) positional arguments starting from offset 1 (i.e. $1). It is a shorthand for "$1" "$2" in this case, but it is much more useful when you want to replace e.g. "${17}".
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How do I update Ruby Gems from behind a Proxy (ISA-NTLM)
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I wasn't able to get mine working from the command-line switch but I have been able to do it just by setting my HTTP_PROXY environment variable. (Note that case seems to be important). I have a batch file that has a line like this in it:
SET HTTP_PROXY=http:...