我想只将包含特定字符串的行(在CSV文件中)保存为单独的CSV文件?
考虑以下文件:
foo,bar,zig,zag
zog,bar,zag,zag
qux,zig,zag,zag
quuux,bar,zag,zag
过滤为条形时,结果应为单独的CSV文件:
foo,bar,zig,zag
zog,bar,zag,zag
quuux,bar,zag,zag
实现这一目标的最有效方法是什么?是否有代码可以执行此操作,因为我需要为大约200个名称执行此操作,例如" bar"。
答案 0 :(得分:1)
您可以按特定列过滤每一行(假设它始终是同一列):
import csv
names = ['bar', 'foo', 'foobar']
data = []
# read data
with open('all.csv', 'r') as csvfile:
spamreader = csv.reader(csvfile, delimiter=',')
for row in spamreader:
if row[1] in names:
data.append(row)
# maybe some more processing
# ...
# write back data that meets criteria
with open('bar.csv', 'wb') as csvfile:
spamwriter = csv.writer(csvfile, delimiter=',')
spamwriter.writerows(data)