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Alternate FizzBuzz Questions [closed]
...) seems a bit more complicated compared to the rest. I'm working it out in Python 3.x and it's a whole different game. Probably just something I'm unaware of.
– DonutSteve
Aug 12 '19 at 10:27
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what is the difference between 'transform' and 'fit_transform' in sklearn
In the sklearn-python toolbox, there are two functions transform and fit_transform about sklearn.decomposition.RandomizedPCA . The description of two functions are as follows
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How to Animate Addition or Removal of Android ListView Rows
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}
}, anim.getDuration());
for top-to-down animation use :
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromYDelta="20%p" android:toYDelta="-20"
android:duration="@android:integer/config_mediumAnimTime"/>
<alph...
Is it possible to change the textcolor on an Android SearchView?
...on bar, put this in your own styles file such as res/values/styles_mytheme.xml:
<style name="Theme.MyTheme" parent="@android:style/Theme.Holo.Light.DarkActionBar">
<item name="android:actionBarWidgetTheme">@style/Theme.MyTheme.Widget</item>
<!-- your other custom styles...
Turn a string into a valid filename?
...want to remove all characters that wouldn't be allowed in filenames, using Python.
23 Answers
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SQLAlchemy: Creating vs. Reusing a Session
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Hi, @zzzeek. Thanks for excellent answer. I'm very new in python and several things I wanna clarify: 1) Do I understand correct when I create new "session" by calling Session() method it will create SQL Transaction, then transaction will be opened until I commit/rollback session? 2...
Calculate distance between two latitude-longitude points? (Haversine formula)
...h my jsPerf and see the results here.
Recently I needed to do the same in python, so here is a python implementation:
from math import cos, asin, sqrt, pi
def distance(lat1, lon1, lat2, lon2):
p = pi/180
a = 0.5 - cos((lat2-lat1)*p)/2 + cos(lat1*p) * cos(lat2*p) * (1-cos((lon2-lon1)*p))/2...
Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
...void using apply
Apply is generally not much faster than iterating over a Python list. Let's test the performance of a for-loop to do the same thing as above
%%timeit
A1, A2 = [], []
for val in df['a']:
A1.append(val**2)
A2.append(val**3)
df['A1'] = A1
df['A2'] = A2
298 ms ± 7.14 ms per...
How to jump to a particular line in a huge text file?
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linecache:
The linecache module allows one to get any line from a Python source file, while attempting to optimize internally, using a cache, the common case where many lines are read from a single file. This is used by the traceback module to retrieve source lines for inclusion in the form...
Styles.Render in MVC4
... structure.....for example a printable version, mobile, audio version, raw xml, etc.
By moving back now to this "old-fashioned", hard-coded path system using C# classes, rigid styles like Bootstrap, and merging the themes of sites with application code, we have gone backwards again to how websites ...