I read a csv file this way:
links = []
with open(join(input_path,'data.csv')) as csvfile:
reader = csv.DictReader(csvfile)
for record in (reader):
if record['link']:
links.append(record['link'])
Now I'm trying this
with open(join(input_path,'data.csv')) as csvfile:
reader = csv.DictReader(csvfile)
a = [record for record in reader if record['link']]
But as I'm returning record
instead of record['link']
I got a dict, how can I get the same result as in the first case using list comprehension?
您正在附加record['link']
,所以这就是您应该在理解中包含的内容:
links = [record['link'] for record in reader if record['link']]
只需使用与调用links.append()
相同的表达式,即record['link']
:
links = [record['link'] for record in reader if record['link']]
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