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Save image from URL by paperclip
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This is potentially insecure because a user could call user.picture_from_url('/etc/password'). It's probably fine in most situations though.
– David Tuite
Oct 11 '13 at 9:16
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Most pythonic way to delete a file which may not exist
...this takes even more lines and looks very ugly, it avoids the unnecessary call to os.path.exists() and follows the python convention of overusing exceptions.
It may be worthwhile to write a function to do this for you:
import os, errno
def silentremove(filename):
try:
os.remove(filena...
How to remove the arrows from input[type=“number”] in Opera [duplicate]
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Especially the link is important! Thanks
– craphunter
Jan 8 '15 at 23:38
26
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Python Pandas Error tokenizing data
... noted
To solve it, try specifying the sep and/or header arguments when calling read_csv. For instance,
df = pandas.read_csv(fileName, sep='delimiter', header=None)
In the code above, sep defines your delimiter and header=None tells pandas that your source data has no row for headers / column ...
Making a div vertically scrollable using CSS
...appear for the vertical axis whether or not it is needed. If you can't actually scroll the context, it will appear as a"disabled" scrollbar.
If you only want a scrollbar to appear if you can scroll the box:
Just use overflow: auto. Since your content by default just breaks to the next line when it...
What is std::promise?
...get it from the associated future.
The asynchronous provider is what initially creates the shared state that a future refers to. std::promise is one type of asynchronous provider, std::packaged_task is another, and the internal detail of std::async is another. Each of those can create a shared sta...
What are the differences between LinearLayout, RelativeLayout, and AbsoluteLayout?
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LinearLayout means you can align views one by one (vertically/ horizontally).
RelativeLayout means based on relation of views from its parents and other views.
ConstraintLayout is similar to a RelativeLayout in that it uses relations to position and size widgets, but has addition...
How do I prevent an Android device from going to sleep programmatically?
How do I prevent an Android device from going to sleep programmatically?
8 Answers
8
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How to close activity and go back to previous activity in android
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I think you are calling finish() method in MainActivity before starting SettingsActivity.
The scenario which you have described will occur in following two ways:
EITHER
You have set android:noHistory = "true" for MainActivity inside Androi...
How do I check what version of Python is running my script?
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it's actually the syntax for print. not for checking the version. i use that in my python 2 and 3 scripts: PY3 = sys.version_info[0] == 3
– gcb
Jul 30 '15 at 8:47
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