Pluck columns from CSV files in the command line. Like cut or awk, but doesn't choke on delimiter escaping.
Project description
Pluck columns from csv files in the commandline. Like cut or awk, but without choke on delimiter escaping.
install
pip install pluckr. Done.
usage
Grab columns 2 and 3 from stdin:
pluckr -f 2,3 < sample1.csv
Or straight from a file:
pluckr -f 2,3 sample1.csv
You can also use Python’s negative indices… grab the first and last cols:
pluckr -f 1,-1 sample1.csv
Fields that don’t exist (e.g. -f11111) will be ignored.
Skip header row(s):
cat sample1.csv | pluckr -s1
Read (and write) various delimiters:
pluckr -d, –out-delimiter=| < with-commas.csv > with-pipes.csv
Note that passing tabs as arguments can be awkward; in a pinch, use:
pluckr -d $’t’
help
Via –help:
- usage: pluckr [-h] [-f FIELDS] [-i INVERSE] [-d DELIMITER] [-q QUOTECHAR]
[-s SKIP] [infile]
Grab columns from csv input. http://github.com/philadams/pluckr
- positional arguments:
infile input file (.csv)
- optional arguments:
- -h, --help
show this help message and exit
- -f FIELDS, --fields FIELDS
the columns to grab (first column is 1)
- -i INVERSE, --inverse INVERSE
invert the column selection: drop them instead
- -d DELIMITER, --delimiter DELIMITER
field delimiter when reading infile
- -q QUOTECHAR, --quotechar QUOTECHAR
field quotechar when reading infile
- -s SKIP, --skip SKIP
number of rows to skip
future
tests!!!
not choke when -f not passed…
implement -i
implement –out-**
allow -f to take columns by name?
add out delimiter support
add out quotechar support
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