从csv文件中删除或保留列的工具。
decol的Python项目详细描述
装饰
从csv文件中删除或保留列的工具。
功能
- 列可以指定为基于1的整数索引或列标题
- 可以将多个索引或标题指定为逗号分隔的列表
- 支持负索引
- 也支持索引范围，例如前两列的索引范围为1:2
使用量
$ decol -h
Usage: decol [OPTIONS] INPUT OUTPUT
A tool to drop or keep columns from a CSV file.
Options:
-c, --columns COLUMNS Comma-separated list of 1-based column indexes
to remove. Negative integers will index from the
end. May use a range, e.g. 1:2 or -3:-2 for
first and second of three columns. Ranges must
always be given in left to right column order
for both positive and negative indexes. Mutually
exclusive with --headers.
-H, --headers HEADERS Comma-separated list of columns to remove by
first-line header. Mutually exclusive with
--columns.
-s, --sep SEPARATOR Column separator. [default: ,]
-o, --output-sep SEPARATOR Output column separator. [default: --sep value]
--keep Keep only the specified columns in the order
specified in --columns or --headers. [default:
False]
--version Show the version and exit.
-h, --help Show this message and exit.
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