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pandas: How do I split text in a column into multiple rows?
I'm working with a large csv file and the next to last column has a string of text that I want to split by a specific delimiter. I was wondering if there is a simple way to do this using pandas or python?
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How can I escape a double quote inside double quotes?
...like this:
$ dbtable=example
$ dbload='load data local infile "'"'gfpoint.csv'"'" into '"table $dbtable FIELDS TERMINATED BY ',' ENCLOSED BY '"'"'"' LINES "'TERMINATED BY "'"'\n'"'" IGNORE 1 LINES'
$ echo $dbload
which produces the following output:
load data local infile "'gfpoint.csv'" into ...
How can I get enum possible values in a MySQL database?
...'s single quote escape might be incompatible), or
$options_array = str_getcsv($options, ',', "'") possibly would work (if you alter the substring to skip the opening and closing parentheses), or
a regular expression
share
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How to use OpenFileDialog to select a folder?
...)|*.png";
//fldrDlg.Filter = "Excel Files (*.xls, *.xlsx)|*.xls;*.xlsx|CSV Files (*.csv)|*.csv"
if (fldrDlg.ShowDialog() == DialogResult.OK)
{
//fldrDlg.SelectedPath -- your result
}
}
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Parsing a comma-delimited std::string [duplicate]
...s as white space:
#include <locale>
#include <vector>
struct csv_reader: std::ctype<char> {
csv_reader(): std::ctype<char>(get_table()) {}
static std::ctype_base::mask const* get_table() {
static std::vector<std::ctype_base::mask> rc(table_size, std::c...
How do I dump the data of some SQLite3 tables?
...t you wish to do with the dumped file.
I would use the following to get a CSV file, which I can import into almost everything
.mode csv
-- use '.separator SOME_STRING' for something other than a comma.
.headers on
.out file.csv
select * from MyTable;
If you want to reinsert into a different S...
Copying data from one SQLite database to another
...lmsa.db. This can be done using the command ATTACH '/mnt/fastaccessDS/core/csv/allmsa.db' AS AM;
note that we give the entire path of the database to be attached.
check the database list using sqlite> .databases
you can see the output as
seq name file ...
How to store a list in a column of a database table
... long, then serializing it in general is an awful approach. If you go the CSV route, you need to account for the values containing the delimiter which means you are compelled to use quoted identifiers. Persuming that the lists are short, it probably will not make much difference whether you use CSV...
How can I create a temp file with a specific extension with .NET?
I need to generate a unique temporary file with a .csv extension.
17 Answers
17
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了解 Boost Filesystem Library - C/C++ - 清泛网 - 专注C/C++及内核技术
...Library创建与平台无关的代码
缺乏定义良好的、用于处理文件系统操作的库，这一直是 C++ 语言存在的一个问题。过去，程序员必须使用本机 API 来解决此问题。通过本文您将了解一个提供安全、可移植且易用的 C++ 接口来促进文...