python 文本数据处理

未完待续

import selectors
import csv
import collections
import operator

def csv_test(filename):
    with open(filename, mode="r", encoding='utf-8') as f:
        try:
            f_csv = csv.reader(f)
            headers = next(f_csv)
            Row = collections.namedtuple('Row', headers)
            print(headers)
            for r in f_csv:
                row = Row(*r)
                # row[0],row.num1,
                print(row.num2)
        except Exception as e:
            print("exception : ", e)


def csv_test2(filename):
    with open(filename, mode="r", encoding='utf-8') as f:
        try:
            f_csv = csv.DictReader(f)
            for r in f_csv:
                print(r['num1'], r['num2'])
        except Exception as e:
            print("exception : ", e)


def sort_test(filename):
    with open(filename, mode="r", encoding='utf-8') as f:
        try:
            f_csv = csv.reader(f)
            sortedlist = sorted(f_csv,key = lambda x:(x[0],x[1]))
            for r in sortedlist:
                print(r)

        except Exception as e:
            print("exception : ", e)