csv.py 文件源码

def _unicode_csv_reader(unicode_csv_data, **kwargs):
    # csv.py doesn't do Unicode; encode temporarily as UTF-8:
    def utf_8_encoder(unicode_csv_data):
        for line in unicode_csv_data:
            yield line.encode('utf-8')
    csv_reader = csv.reader(utf_8_encoder(unicode_csv_data), **kwargs)
    for row in csv_reader:
        # decode UTF-8 back to Unicode, cell by cell:
        yield [unicode(cell, 'utf-8') for cell in row]