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What does the “at” (@) symbol do in Python?
...symbol, but I have no idea what it does. I also do not know what to search for as searching Python docs or Google does not return relevant results when the @ symbol is included.
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Automatically capture output of last command into a variable using Bash?
...AND='LAST="`cat /tmp/x`"; exec >/dev/tty; exec > >(tee /tmp/x)'
Set this bash environmental variable and issues commands as desired. $LAST will usually have the output you are looking for:
startide seth> fortune
Courtship to marriage, as a very witty prologue to a very dull play.
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RuntimeError on windows trying python multiprocessing
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
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else {
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How can I make a multipart/form-data POST request using Java?
In the days of version 3.x of Apache Commons HttpClient, making a multipart/form-data POST request was possible ( an example from 2004 ). Unfortunately this is no longer possible in version 4.0 of HttpClient .
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Expand Python Search Path to Other Source
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There are a few possible ways to do this:
Set the environment variable PYTHONPATH to a colon-separated list of directories to search for imported modules.
In your program, use sys.path.append('/path/to/search') to add the names of directories you want Python to searc...
Convert all strings in a list to int
In Python, I want to convert all strings in a list to integers.
4 Answers
4
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Why are margin/padding percentages in CSS always calculated against width?
...e height, or an infinite loop. Sure, this only
affects the case where offset parent === parent, but still. It's an
odd case that is difficult to resolve.
Update: The last couple sentences may not be entirely accurate. The height of the leaf element (child with no children) has an effect on the...
How to split (chunk) a Ruby array into parts of X elements? [duplicate]
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Take a look at Enumerable#each_slice:
foo.each_slice(3).to_a
#=> [["1", "2", "3"], ["4", "5", "6"], ["7", "8", "9"], ["10"]]
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Getting only 1 decimal place [duplicate]
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Are you trying to represent it with only one digit:
print("{:.1f}".format(number)) # Python3
print "%.1f" % number # Python2
or actually round off the other decimal places?
round(number,1)
or even round strictly down?
math.floor(number*10)/10
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Linux日志切分工具：Logrotate - 更多技术 - 清泛网 - 专注C/C++及内核技术
...aily/logrotate」：
#!/bin/sh
/usr/sbin/logrotate /etc/logrotate.conf
EXITVALUE=$?
if [ $EXITVALUE != 0 ]; then
/usr/bin/logger -t logrotate "ALERT exited abnormally with [$EXITVALUE]"
fi
exit 0
实际运行时，Logrotate会调用配置文件「/etc/logrotate.conf」：
# see "m...