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Replace None with NaN in pandas dataframe
... dtype fields in your df and then replace the None:
obj_columns = list(df.select_dtypes(include=['object']).columns.values)
df[obj_columns] = df[obj_columns].replace([None], np.nan)
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improv...
Hover and Active only when not disabled
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There's also the :not() selector, but then again, it's only supported since IE9 as well. See: developer.mozilla.org/en-US/docs/Web/CSS/:not
– jnns
Nov 28 '13 at 16:26
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How do I uninstall a Windows service if the files do not exist anymore?
...h elevated privileges. [Windows Key-X to bring up a menu with the option; select "Command Prompt (Admin)".]
2) Use the parenthetical name from the list in Services [for example, I used "sc delete gupdate" when, in Services, it read "Google Update (gupdate)"]
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How do I display an alert dialog on Android?
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Didn't work on drawer item selection, but this one did: stackoverflow.com/a/26097588/1953178
– Amr Hossam
Nov 5 '15 at 16:30
5
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How to find out which fonts are referenced and which are embedded in a PDF document
...e fonts embedded.
Using the normal Adobe Reader (or Foxit if you prefer). Select File->Properties on the resulting Dialog choose the Font tab. You will see a list of fonts. The ones that are embedded will state this fact in ( ) behind the font name.
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How to install packages offline?
...r you don't need to use sudo pip….
2) use virtualenv
on online machine select a directory with terminal cd and run this code:
python -m virtualenv myenv
cd myenv
source bin/activate
pip install Flask
after installing all the packages, you have to generate a requirements.txt so while your virt...
Merge Images Side by Side(Horizontally)
...x. to join vertically = up-town):convert -append %F joined-image.png . All selected images will be joined as one png in alphabetical order
– user4098390
Mar 5 '17 at 10:53
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How to change border color of textarea on :focus
...you are already using that class on the textarea. You get rid of the extra selector that way.
– Hoshts
Apr 22 '13 at 21:10
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how to deal with google map inside of a hidden div (Updated picture)
...script>
$(document).ready( function() {
/* Detects when the tab is selected */
$('a[href="#tab-id"]').on('shown.bs.tab', function() {
/* When the tab is shown the content of the wrapper
is regenerated and reloaded */
$('#map-wrapper').html( $('#map-wrapper')....
Why can't I inherit static classes?
...ods (as they are defined on type level). How should the compiler decide to select the method to invoke?
(littleguru)
And as a valuable idea, littleguru has a partial "workaround" for this issue: the Singleton pattern.
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