(Python)Python如何實現將數據寫入csv文件

代碼:

import csv
with open(“test_write.csv”,‘w+’,encoding=‘utf-8’) as f:

writer = csv.writer(f)
writer.writerow([“URL”,“predict”,“score”])
row = [[‘1’,1,1],[‘2’,2,2],[‘3’,3,3]]
for r in row:
writer.writerow ( r )

注：with open() as f 的好處是，若open()出現異常，會自動捕獲異常，且打開之後，自動關閉。

file= open(“test.txt”,“r”)
try:
      for line in file.readlines():
      print line
except:
      print “error”
finally:
      file.close()

即with的作用相當於try-except-finally