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Pandas - How to flatten a hierarchical index in columns
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All of the current answers on this thread must have been a bit dated. As of pandas version 0.24.0, the .to_flat_index() does what you need.
From panda's own documentation:
MultiIndex.to_flat_index()
Convert a MultiIndex to an Index of Tuples containing the level values.
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Bad class file magic or version
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In case people find @Marco Acierno's answer to be a bit unclear, the solution is to ensure you're building with Java 7 and not a higher version.
For Android Studio, change File -> Project Structure -> SDK Location -> JDK Location to jdk1.7.x. For the command line, en...
实战Nginx与PHP（FastCGI）的安装、配置与优化 - 更多技术 - 清泛网 - 专注...
...it_files用于设置PHP-FPM对打开文件描述符的限制，默认值为1024。这个标签的值必须和Linux内核打开文件数关联起来，例如要将此值设置为65535，就必须在Linux命令行执行'ulimit -HSn 65536'。
<value name="rlimit_files">1024</value>
标签max_reque...
How to append contents of multiple files into one file
...form {...} for filename matching, so perhaps the quotes messed things up a bit in your script? I always try working with things like this using ls in a shell. When I get the command right, I just cut-n-paste it into a script as is. You might also find the -x option useful in your scripts - it will...
How do I send a POST request with PHP?
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answered Jul 7 '11 at 10:27
dbaudbau
14.3k22 gold badges1717 silver badges3131 bronze badges
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HMAC-SHA1 in bash
...way that would not break the algorithm. Then I found this: http://openssl.6102.n7.nabble.com/command-line-hmac-with-key-in-hex-td6754.html
Stephen Henson's reply requires the hash_hmac function to return the value in hex format. So it needs to echo the following:
$ echo -n "$data" | openssl dgst "...
How to test valid UUID/GUID?
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@FelipeBrahm, [1-5] is right according to RFC, that 4 bits indicate the version, and there are only 5 versions.
– rvignacio
Jun 20 '14 at 21:28
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Python subprocess/Popen with a modified environment
...rupan: what disadvantage do you see for this specific use-case? (merging arbitrary dicts and copy/update the environ are different tasks).
– jfs
May 16 '16 at 22:33
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Ubuntu rails install fails on zlib
... even work for me ...
So, ..
I'm installing a new box Ubuntu 8.04 LTS 64-bit ...
So, I ...
cd ~
wget ftp://ftp.ruby-lang.org//pub/ruby/1.9/ruby-1.9.2-p180.tar.gz
tar -xvvf ruby-1.9.2-p180.tar.gz
cd ruby-*
./configure
make
install
sudo make install
And then I have this problem w...
Standard way to embed version into python package?
...s technique that I've been using for years.
The code in that example is a bit more complicated, but the simplified example that I wrote into this comment should be a complete implementation.
Here is example code of importing the version.
If you see anything wrong with this approach, please let me...