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Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers
...
import pandas as pd
data = np.array([['col1', 'col2'], [4.8, 2.8], [7.0, 1.2]])
>>> data
array([['col1', 'col2'],
['4.8', '2.8'],
['7.0', '1.2']], dtype='<U4')
Creating data frame
df = pd.DataFrame(i for i in data).transpose()
df.drop(0, axis=1, inplace=True)
df.columns...
Checking for empty queryset in Django
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Since version 1.2, Django has QuerySet.exists() method which is the most efficient:
if orgs.exists():
# Do this...
else:
# Do that...
But if you are going to evaluate QuerySet anyway it's better to use:
if orgs:
...
For mo...
How to remove indentation from an unordered list item?
... <ul> indentation is a simple CSS one-liner:
ul { padding-left: 1.2em; }
<p>A leading line of paragraph text</p>
<ul>
<li>Bullet points align with paragraph text above.</li>
<li>Long list items wrap around correctly. Long list items wrap aro...
With CSS, use “…” for overflowed block of multi-lines
...get it to work */
}
2) fade out
Let's say you set the line-height to 1.2em. If we want to expose
three lines of text, we can just make the height of the container
3.6em (1.2em × 3). The hidden overflow will hide the rest.
Fade out FIDDLE
p
{
margin:0;padding:0;
}
.module {
width:...
How do I know which version of Javascript I'm using?
I'm just reading this documentation about Javascript 1.2, but I'm wondering which version of Javascript is being used in the most popular browsers.
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Fastest way to iterate over all the chars in a String
...1.9 1.3 1.4
1,024 field1 1.6 1.4 40.0 45.6 1.2 1.9 2.1 1.0 1.2
2,048 field1 1.6 1.3 40.0 36.2 1.2 1.8 1.7 0.9 1.1
4,096 field1 1.6 1.3 39.7 32.6 1.2 1.8 1.7 0.9 1.0
8,192 ...
Format a number as 2.5K if a thousand or more, otherwise 900
...ow a currency value in the format of 1K of equal to one thousand, or 1.1K, 1.2K, 1.9K etc, if its not an even thousands, otherwise if under a thousand, display normal 500, 100, 250 etc, using javascript to format the number?
...
How to convert a number to string and vice versa in C++
...tring as you wish, just like with cout
std::ostringstream ostr;
float f = 1.2;
int i = 3;
ostr << f << " + " i << " = " << f + i;
std::string s = ostr.str();
//now s is "1.2 + 3 = 4.2"
You can use stream manipulators, such as std::endl, std::hex and functions std::setw...
Get the length of a String
...ight from the Apple Swift Guide
(note, for versions of Swift earlier than 1.2, this would be countElements(unusualMenagerie) instead)
for your variable, it would be
length = count(test1) // was countElements in earlier versions of Swift
Or you can use test1.utf16count
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How to use JUnit and Hamcrest together?
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Looks like hamcrest 1.2 is not in Maven Central repository. That's the problem I'm facing :(
– yegor256
Apr 6 '11 at 16:58
...