如何在Python中将数据写入csv文件?我的csv文件包含必须转换的数据。
我这样做:
import csv
with open('bookcat.csv') as csvfile:
reader = csv.reader(csvfile)
for row in reader:
if row:
id = row[0].strip()
categories = row[1:]
for cat in categories:
cat = cat.strip()
if cat:
print("%s\t%s" % (id, cat))
id
和cat
必须写入csv
文件。在执行之前,我有一个csv文件,看起来像:
1,,,,,,,,201,202,,204,,206,207,208,,301,,,,,,,,,,,,,,,,,,,,,,,,605,606,,
2,,,,,,,,201,,,204,205,,,,209,301,,,304,,402,,,405,,,,,,,,,,,,,,,604,,,,
3,,,,,,,,201,,,,,,,,,,,,,,,,,,,,,,,506,,,,,,,,,,,,,
4,,,,,,,,,,,204,,206,,208,209,,,,,,,,,,,,,,,,,,,,,,,,,,,,
5,,,,,,,,201,,,204,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
现在,在Python中执行我的代码后,它看起来像:
1 201
1 202
1 204
1 206
1 207
1 208
1 301
1 605
1 606
2 201
2 204
2 205
2 209
2 301
2 304
我想用定界符将其写入csv文件;要么 , 。
最佳答案
这有帮助吗?
import csv
with open('innovators.csv', 'w', newline='') as file:
writer = csv.writer(file)
writer.writerow(["SN", "Name", "Contribution"])
writer.writerow([1, "Linus Torvalds", "Linux Kernel"])
writer.writerow([2, "Tim Berners-Lee", "World Wide Web"])
writer.writerow([3, "Guido van Rossum", "Python Programming"])
输出量
SN,Name,Contribution
1,Linus Torvalds,Linux Kernel
2,Tim Berners-Lee,World Wide Web
3,Guido van Rossum,Python Programming
关于python - 如何在Python中将数据写入CSV文件,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/59812189/