python 在Python 3中将StringIO与csv模块一起使用的示例。

Posted 2021-05-09

import csv

def as_csv(rows, **fmtparams):
    """Writes a Sequence of str Sequences in CSV format (PY3 only).
    >>> as_csv([('a1', 'a2'), ('b1', 'b2')], lineterminator='\n')
    'a1,a2\nb1,b2\n'
    """
    output = io.StringIO()
    writer = csv.writer(output, **fmtparams)
    writer.writerows(rows)
    return output.getvalue()