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How can I strip the whitespace from Pandas DataFrame headers?
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If you use CSV format to export from Excel and read as Pandas DataFrame, you can specify:
skipinitialspace=True
when calling pd.read_csv.
From the documentation:
skipinitialspace : bool, default False
Skip spaces after delimite...
How can I specify a branch/tag when adding a Git submodule?
...] && \
git checkout master || git switch $branch' –
umläute refines dtmland's command with a simplified version in the comments:
git submodule foreach -q --recursive 'git switch $(git config -f $toplevel/.gitmodules submodule.$name.branch || echo master)'
multiple lines:
git su...
How do I correctly clone a JavaScript object?
... edited Jul 12 '19 at 13:45
buræquete
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answered Mar 2 '11 at 6:36
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Split delimited strings in a column and insert as new rows [duplicate]
... R. It assumes we're starting with a data.frame named "mydf". It uses read.csv to read in the second column as a separate data.frame, which we combine with the first column from your source data. Finally, you use reshape to convert the data into a long form.
temp <- data.frame(Ind = mydf$V1,
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Python, remove all non-alphabet chars from string
... Note that this will also remove accented letters: ãâàáéèçõ, etc.
– AlmostPitt
Jun 15 at 9:20
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开源邮件传输代理软件 -- Postfix 介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...ix。Postfix支持/var[/spool]/mail、/etc/aliases、 NIS、和 ~/.forward 文件。
4. 更健壮：
postfix被设计成在重负荷之下仍然可以正常工作。当系统运行超出了可用的内存或磁盘空间时，postfix会自动减少运行进程的数目。当处理的邮件数目...
libcurl的使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...结束后，可以查看目录结构。
curl/include/curl ： 头文件目录 （一般只要包含curl.h即可）
curl/lib/.lib/ ： lib文件目录（有libcurl.a和libcurl.so，注意，如果这两个文件在同一目录下，-lcurl默认是链接.so滴）
二.函数简...
Export specific rows from a PostgreSQL table as INSERT SQL script
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COPY (SELECT * FROM nyummy.cimory WHERE city = 'tokio') TO '/path/to/file.csv';
Import the same to another table of the same structure anywhere with:
COPY other_tbl FROM '/path/to/file.csv';
COPY writes and read files local to the server, unlike client programs like pg_dump or psql which read ...
How does one write code that best utilizes the CPU cache to improve performance?
...pr 18 '09 at 12:56
Tomi KyöstiläTomi Kyöstilä
1,20599 silver badges1313 bronze badges
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逆向工程——二进制炸弹(CSAPP Project) - 操作系统(内核) - 清泛网 - 专注...
逆向工程——二进制炸弹(CSAPP Project)实验文件：http: files cnblogs com remlostime bomb zip题中给出了一个二进制文件（可执行文件），共6个关卡，每关要输入一个密码才能过 实验文件：bomb.zip
题中给出了一个二进制文件（可执行...