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Selecting multiple columns in a pandas dataframe
...n range(100)])
df.head()
Out:
A B C D E F
R0 99 78 61 16 73 8
R1 62 27 30 80 7 76
R2 15 53 80 27 44 77
R3 75 65 47 30 84 86
R4 18 9 41 62 1 82
To get the columns from C to E (note that unlike integer slicing, 'E' is included in the columns):
df.l...
dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
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answered Mar 18 '16 at 19:07
A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1
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C#: List All Classes in Assembly
... method.
– Daniel Armstrong
Oct 27 '16 at 5:42
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show 2 mo...
Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
...EE_SHA1_HEX \
"4b825dc642cb6eb9a060e54bf8d69288fbee4904"
Since Git 2.16 (Q1 2018), it is used in a structure which is no longer tied to (only) SHA1, as seen in commit eb0ccfd:
Switch empty tree and blob lookups to use hash abstraction
Switch the uses of empty_tree_oid and empty_blob_...
TypeScript with KnockoutJS
...!
– George Mavritsakis
Dec 1 '12 at 16:03
5
Note that the key is to add /// <reference path="k...
How to include jar files with java file and compile in command prompt
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Manoj
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answered Feb 22 '12 at 14:08
kensen johnkensen john
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Where are environment variables stored in registry?
...in order to put your changes into effect.
– 0x6B6F77616C74
Aug 6 '12 at 13:57
22
You don't need t...
MySQL: What's the difference between float and double?
... | dba+dbb |
+--------------------+---------+
| 2.4000000953674316 | 2.40 |
+--------------------+---------+
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Remove trailing newline from the elements of a string list
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216
>>> my_list = ['this\n', 'is\n', 'a\n', 'list\n', 'of\n', 'words\n']
>>> map(...
Git : List all unmerged changes in git
...003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 45.2525 4.66231 44...