我有一些包含太多列的CSV文件,LibreOffice Calc无法打开,但只有很少的行数。如果我可以转置这个CSV文件,那么Calc应该可以处理比列更多的行数。
import csv
import sys
infile = sys.argv[1]
outfile = sys.argv[2]
with open(infile) as f:
reader = csv.reader(f)
cols = []
for row in reader:
cols.append(row)
with open(outfile, 'wb') as f:
writer = csv.writer(f)
for i in range(len(max(cols, key=len))):
writer.writerow([(c[i] if i<len(c) else '') for c in cols])
python my_csv_transposer.py <theinfilename> <theoutfilename>
$ ./transpose_csv < theinfilename > theoutfilename
#!/usr/bin/env python
import sys, csv, itertools
rows = itertools.izip(*csv.reader(sys.stdin, delimiter=','))
sys.stdout.writelines(','.join(row) + '\n' for row in rows)
python3 -c "import sys,csv; csv.writer(sys.stdout).writerows(zip(*csv.reader(sys.stdin)))"
- Janus Troelsenrequire 'CSV'
rows = CSV.new($stdin).read
puts rows.transpose.map { |x| x.join ',' }