在追加模式下打开文件。
import csv
list1=[58,100,'dir1/dir2/dir3/file.txt',0.8]
with open("output.csv", "a") as fp:
wr = csv.writer(fp, dialect='excel')
wr.writerow(list1)
尝试以下：
>>> with open('test1','wb') as f: f.write('test')
...
>>> with open('test1','ab') as f: f.write('koko')
...
>>> with open('test1','rb') as f: f.read()
...
'testkoko'
>>> with open('test1','wa') as f: f.write('coco')
...
>>> with open('test1','rb') as f: f.read()
...
'coco'
>>>
从这个连结
：说明
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