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How do I detect the Python version at runtime? [duplicate]
...check that you are running Python 3.x, use
import sys
if sys.version_info[0] < 3:
raise Exception("Must be using Python 3")
Here, sys.version_info[0] is the major version number. sys.version_info[1] would give you the minor version number.
In Python 2.7 and later, the components of sys.ve...
Returning value from called function in a shell script
... echo >&2 "successfully acquired lock: $lockdir"
retval=0
else
echo >&2 "cannot acquire lock, giving up on $lockdir"
retval=1
fi
return "$retval"
}
testlock
retval=$?
if [ "$retval" == 0 ]
then
echo "directory not created"
else
echo ...
Analyze audio using Fast Fourier Transform
...
209
The array you are showing is the Fourier Transform coefficients of the audio signal. These coef...
Precedence and bitmask operations
...
150
You are actually doing this:
var_dump(0b10 & (0b01 == 0));
var_dump(0b10 & (0b01 != 0))...
How to use shared memory with Linux in C
...lains their purpose.
return mmap(NULL, size, protection, visibility, -1, 0);
}
The following is an example program that uses the function defined above to allocate a buffer. The parent process will write a message, fork, and then wait for its child to modify the buffer. Both processes can read a...
How to add leading zeros?
...f digits to begin with, so let's try a harder example of making powers of 10 width 8 too.
anim <- 25499:25504
x <- 10 ^ (0:5)
paste (and it's variant paste0) are often the first string manipulation functions that you come across. They aren't really designed for manipulating numbers, but ...
Decimal separator comma (',') with numberDecimal inputType in EditText
...
105
A workaround (until Google fix this bug) is to use an EditText with android:inputType="numberDe...
Programmatically Request Access to Contacts
...
180
As per this documentation on apple's site (scroll down to Privacy in the middle of the page), ac...
Android RelativeLayout programmatically Set “centerInParent”
...
401
Completely untested, but this should work:
View positiveButton = findViewById(R.id.positiveBut...
Get protocol + host name from URL
...
306
You should be able to do it with urlparse (docs: python2, python3):
from urllib.parse import u...
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