使用下面的数据,使用代码片段,我收到以下错误。你能帮我解决这个问题吗?我是一名Python初学者。 数据:在Python中读取csv文件
"Id","Title","Body","Tags"
"Id1","Tit,le1","Body1","Ta,gs1"
"Id","Title","Body","Ta,2gs"
代码:
#!/usr/bin/python
import csv,sys
if len(sys.argv) <> 3:
print >>sys.stderr, 'Wrong number of arguments. This tool will print first n records from a comma separated CSV file.'
print >>sys.stderr, 'Usage:'
print >>sys.stderr, ' python', sys.argv[0], '<file> <number-of-lines>'
sys.exit(1)
fileName = sys.argv[1]
n = int(sys.argv[2])
i = 0
out = csv.writer(sys.stdout, delimiter=',', quotechar='"', quoting=csv.QUOTE_NONNUMERIC)
ret = []
def read_csv(file_path, has_header = True):
with open(file_path) as f:
if has_header: f.readline()
data = []
for line in f:
line = line.strip().split("\",\"")
data.append([x for x in line])
return data
ret = read_csv(fileName)
target = []
train = []
target = [x[2] for x in ret]
train = [x[1] for x in ret]
错误:
target = [x[2] for x in ret]
IndexError: list index out of range
创建的文件没有超过两行吗? –
对不起,数据有误。我现在编辑了这个问题。谢谢@PauloBu – novieq
[x for line in]有什么意义? –