python csv reader忽略空白行

一尘不染

python csv reader忽略空白行

python

我正在使用python csv阅读器。我如何以忽略空白行的方式使用以下代码。

import csv
f1 = open ("ted.csv")
oldFile1 = csv.reader(f1, delimiter=',', quotechar='"')
oldList1 = list(oldFile1)
f2 = open ("ted2.csv")
newFile2 = csv.reader(f2, delimiter=',', quotechar='"')
newList2 = list(newFile2)

f1.close()
f2.close()

with open("ted.csv") as f1, open("ted2.csv") as f2, open('foo.csv', 'w') as out:
     r1, r2 = csv.reader(f1), csv.reader(f2)
     st = set((row[0], row[3]) for row in r1)
     wr = csv.writer(out)
     for row in (row for row in r2 if (row[0],row[3]) not in st):
           wr.writerow(row)

阅读 363

2021-01-20

共1个答案

一尘不染

如果您的csv文件以空行开头，我认为您应该能够readline()在创建csv阅读器之前跳过该行：

with open("ted.csv") as f1, open("ted2.csv") as f2, open('foo.csv', 'w') as out:
    f1.readline()
    f2.readline()
    r1, r2 = csv.reader(f1), csv.reader(f2)

2021-01-20