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“ValueError: zero length field name in format” error in Python 3.0,3.1,3.2
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I'm gonna guess that you are running python 2.6 by accident somehow.
This feature is only available for at least 3.1 if you are using python 3, or 2.7 if you are using python 2.
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Math.random() explanation
... return (int)(Math.random() * range) + min;
}
Output of randomWithRange(2, 5) 10 times:
5
2
3
3
2
4
4
4
5
4
The bounds are inclusive, ie [2,5], and min must be less than max in the above example.
EDIT: If someone was going to try and be stupid and reverse min and max, you could change the cod...
Sort Dictionary by keys
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172
let dictionary = [
"A" : [1, 2],
"Z" : [3, 4],
"D" : [5, 6]
]
let sortedKeys = Arra...
Identifying the dependency relationship for python packages installed with pip
...dencies as a tree structure e.g.:
$ pipdeptree
Lookupy==0.1
wsgiref==0.1.2
argparse==1.2.1
psycopg2==2.5.2
Flask-Script==0.6.6
- Flask [installed: 0.10.1]
- Werkzeug [required: >=0.7, installed: 0.9.4]
- Jinja2 [required: >=2.4, installed: 2.7.2]
- MarkupSafe [installed: 0.18...
How can I obtain an 'unbalanced' grid of ggplots?
..., arrangeGrob(p,p,p, heights=c(3/4, 1/4, 1/4), ncol=1),
ncol=2)
Edit (07/2015): with v>2.0.0 you can use the layout_matrix argument,
grid.arrange(p,p,p,p, layout_matrix = cbind(c(1,1,1), c(2,3,4)))
shar...
Rotating videos with FFmpeg
... pass:
0 = 90CounterCLockwise and Vertical Flip (default)
1 = 90Clockwise
2 = 90CounterClockwise
3 = 90Clockwise and Vertical Flip
Use -vf "transpose=2,transpose=2" for 180 degrees.
Make sure you use a recent ffmpeg version from here (a static build will work fine).
Note that this will re-encod...
How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples g
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2 Answers
2
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Set selected option of select box
...code into a $(document).ready:
$(function() {
$("#gate").val('gateway_2');
});
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How do you know when to use fold-left and when to use fold-right?
...re, you use a left fold. Example (haskell-style pseudocode)
foldl (-) [1, 2, 3] == (1 - 2) - 3 == 1 - 2 - 3 // - is left-associative
If your operator is right-associative (right fold), the parentheses would be set like this:
A x (B x (C x D))
Example: Cons-Operator
foldr (:) [] [1, 2, 3] == 1...
How do I use spaces in the Command Prompt?
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267
Single quotation marks won't do in that case. You have to add quotation marks around each path...