python - 使用 DictReader 从 csv 文件中获取第一条记录

我正在尝试使用 DictReader 从 csv 文件中获取第一条记录作为 dict。我无法理解，因为文档只讨论迭代阅读器对象

 with open(filename, 'r') as f_in:
        # Use the csv library to set up a DictReader object.
        trip_reader = csv.DictReader(f_in)
        # Use a function on the DictReader object to read the
        # first trip from the data file and store it in a variable.
        for row in trip_reader:
                   pprint(row)

是否有任何函数可以将第一条记录作为trip_reader [0]？

最佳答案

由于您可以遍历 trip_reader ，因此您可以对其调用 next() 以获取下一行(在本例中为第一行):

with open(filename, 'r') as f_in:
    # Use the csv library to set up a DictReader object.
    trip_reader = csv.DictReader(f_in)
    # Use a function on the DictReader object to read the
    # first trip from the data file and store it in a variable.
    row = next(trip_reader)
    pprint(row)