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“Large data” work flows using pandas
..., dc = ['field_10']),
.....
REPORTING_ONLY = dict(fields = ['field_1000','field_1001',...], dc = []),
)
group_map_inverted = dict()
for g, v in group_map.items():
group_map_inverted.update(dict([ (f,g) for f in v['fields'] ]))
Reading in the files and creating the storage (essentiall...
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
...und:
def foo(a, b, c):
print(a, b, c)
obj = {'b':10, 'c':'lee'}
foo(100,**obj)
# 100 10 lee
Another usage of the *l idiom is to unpack argument lists when calling a function.
def foo(bar, lee):
print(bar, lee)
l = [1,2]
foo(*l)
# 1 2
In Python 3 it is possible to use *l on the left...
How to uglify output with Browserify in Gulp?
... Important notes, it seems uglifyify is unmaintained and stuck on Uglify v1 which is deprecated.
– Evan Carroll
Jan 13 '15 at 21:19
2
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python plot normal distribution
... 1
sigma = math.sqrt(variance)
x = np.linspace(mu - 3*sigma, mu + 3*sigma, 100)
plt.plot(x, stats.norm.pdf(x, mu, sigma))
plt.show()
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Rename MySQL database [duplicate]
...is easy, it is time and space consuming. What if the schema is more than a 100GB? There are methods where you can pipe the above commands together to save on space, however it will not save time.
To remedy such situations, there is another quick method to rename
schemas, however, some care mus...
How to multiply duration by integer?
...the int32 to a time.Duration, such as time.Sleep(time.Duration(rand.Int31n(1000)) * time.Millisecond).
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CSS Image size, how to fill, not stretch?
...ckground-size CSS3 property.
.container {
width: 150px;
height: 100px;
background-image: url("http://i.stack.imgur.com/2OrtT.jpg");
background-size: cover;
background-repeat: no-repeat;
background-position: 50% 50%;
}
<div class="container"></div>
While...
Save ArrayList to SharedPreferences
...references with unused old values. For example a list might have a size of 100 on a run, and then a size of 50. The 50 old entries will remain on the preferences. One way is setting a MAX value and clearing anything up to that.
– Iraklis
Feb 17 '13 at 12:17
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iPhone App Minus App Store?
.... You can then use the adhoc system to install your application onto up to 100 devices. The developer program has the details but it involves adding UUIDs for each of the devices to your application package. UUIDs can be easiest retrieved using Ad Hoc Helper available from the App Store. For further...
Improve INSERT-per-second performance of SQLite
...d-up (3.8.0.2 64-bit on Windows 7). Our tables are heavily non-normalized (1000-1500 columns, roughly 100,000 or more rows).
Too many or too little threads won't do it, you need to benchmark and profile yourself.
Also for us, SHAREDCACHE made the performance slower, so I manually put PRIVATECACHE ...