使用以下内容(注意第一行没有前导空格):
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
....
481 total rows
以下正确删除前导空格,但在每个字符串行后面插入一个空行,AND,每次执行时,按行随机数截断总列表。
csvfile= open('list.csv','r')
csvfile1= open('complete_list.csv','w')
stripped = (row.strip() for row in csvfile)
reader = csv.reader(stripped,delimiter=' ')
writer= csv.writer(csvfile1)
for row in reader:
writer.writerow([e.strip() for e in row])
和:
with open('list.csv') as infile:
reader = csv.DictReader(infile)
fieldnames = reader.fieldnames
for row in reader:
row.update({fieldname: value.strip() for (fieldname, value) in row.items()})
什么都不做,因为第一行被假定为fieldname,而实际上它只是......一行。
这里有几个问题:
newline=""
以写入模式打开csv文件,否则它会在窗口中插入空格strip
但使用lstrip
,否则它会在行尾删除换行符。可以混淆csv阅读器with
上下文块,以确保退出块时文件被关闭(最后应处理你的随机缺失行)我的建议:
with open('list.csv','r') as csvfile, open('complete_list.csv','w',newline="") as csvfile1: # newline="" to avoid blanks
stripped = (row.lstrip() for row in csvfile) # lstrip not strip
reader = csv.reader(stripped,delimiter=' ')
writer= csv.writer(csvfile1)
writer.writerows(reader) # don't overstrip: just write rows as-is