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Actual meaning of 'shell=True' in subprocess
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The benefit of not calling via the shell is that you are not invoking a 'mystery program.' On POSIX, the environment variable SHELL controls which binary is invoked as the "shell." On Windows, there is no bourne shell descendent, only cmd.exe.
So invoking the shell invokes a program of ...
How to continue a task when Fabric receives an error
When I define a task to run on several remote servers, if the task runs on server one and exits with an error, Fabric will stop and abort the task. But I want to make fabric ignore the error and run the task on the next server. How can I make it do this?
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How to validate IP address in Python? [duplicate]
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Don't parse it. Just ask.
import socket
try:
socket.inet_aton(addr)
# legal
except socket.error:
# Not legal
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How do you determine what SQL Tables have an identity column programmatically
... edited Jan 23 '17 at 22:29
Mark Cidade
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answered Sep 17 '08 at 21:44
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How do you clear the focus in javascript?
I know this shouldn't be that hard, but I couldn't find the answer on Google.
7 Answers
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Detect viewport orientation, if orientation is Portrait display alert message advising user of instr
... someone rotates later - orientationchange
Also, after some googling, check out window.orientation (which is I believe measured in degrees...)
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What is an xs:NCName type and when should it be used?
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Andrey AdamovichAndrey Adamovich
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In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
...sense that data can be both sent from and to a generator.
(If we were talking about TCP, yield from g might mean "now temporarily disconnect my client's socket and reconnect it to this other server socket".)
BTW, if you are not sure what sending data to a generator even means, you need to drop ev...
How to convert a string or integer to binary in Ruby?
... answered Feb 26 '10 at 8:52
Mike WoodhouseMike Woodhouse
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How does this CSS produce a circle?
...two questions:
Where do width and height actually apply?
Let's have a look at the areas of a typical box (source):
The height and width apply only on content, if the correct box model is being used (no quirks mode, no old Internet Explorer).
Where does border-radius apply?
The border-radius ...