Python中通过csv的writerow输出的内容有多余的空行

时间:2023-03-09 02:52:49
Python中通过csv的writerow输出的内容有多余的空行

第一种方法

如下生成的csv文件会有多个空行

import csv

#python2可以用file替代open
with open("test.csv","w") as csvfile:
writer = csv.writer(csvfile) #先写入columns_name
writer.writerow(["index","a_name","b_name"])
#写入多行用writerows
writer.writerows([[,,],[,,],[,,]])

加入newline='' 参数

#coding=utf-
import csv #python2可以用file替代open
with open("test.csv","wt",newline='') as csvfile:
writer = csv.writer(csvfile)
#写入多行用writerows
writer.writerows([["index","a_name","b_name"],[,,],[,,],[,,]])

这样就不会有空行了。


第二种方法:

先写入csv文件,然后读出去掉空行,再写入

with open('E:\\test.csv','wt')as fout:       #生成csv文件,有空行
cout=csv.DictWriter(fout,list_attrs_head )
cout.writeheader()
cout.writerows(list_words)
with open('E:\\test.csv','rt')as fin: #读有空行的csv文件,舍弃空行
lines=''
for line in fin:
if line!='\n':
lines+=line
with open('E:\\test.csv','wt')as fout: #再次文本方式写入,不含空行
fout.write(lines)

参考:

https://www.crifan.com/python_csv_writer_writerow_redundant_new_line/?utm_source=tuicool&utm_medium=referral

https://blog.****.net/langaer/article/details/70052971