[英]How to remove blank lines in text file python?
In my python script, I write specific columns from a text_file to a new_text_file separated by ,
because the new_text_file will later become a csv_file. 在我的python脚本中,我将特定的列从text_file写入由分隔的new_text_file
,
因为new_text_file稍后将成为csv_file。 There are white space lines left over in the new_text_file because of lines I skipped writing over that need to be removed from the file. 由于我跳过了一些需要从文件中删除的行,因此new_text_file中留有空白行。
I can't use .strip()
or .rstrip()
because I get the error: AttributeError: '_io.TextIOWrapper' object has no attribute 'strip'
. 我无法使用
.strip()
或.rstrip()
因为出现错误: AttributeError: '_io.TextIOWrapper' object has no attribute 'strip'
。
I can't use ip_file.write("".join(line for line in ip_file if not line.isspace()))
because I get the error: UnsupportedOperation: not readable
. 我无法使用
ip_file.write("".join(line for line in ip_file if not line.isspace()))
因为我收到错误: UnsupportedOperation: not readable
。
I also tried importing sys
and re
, and have tried every other answer found on this site, but it still returns errors. 我也尝试导入
sys
和re
,并尝试了在此站点上找到的所有其他答案,但是它仍然返回错误。
My code is: 我的代码是:
for ip in open("list.txt"):
with open(ip.strip()+".txt", "a") as ip_file:
for line in open("data.txt"):
new_line = line.split(" ")
if "blocked" in new_line:
if "src="+ip.strip() in new_line:
#write columns to new text file
ip_file.write(", " + new_line[11])
ip_file.write(", " + new_line[12])
try:
ip_file.write(", " + new_line[14] + "\n")
except IndexError:
pass
The resulting ip_file looks like: 生成的ip_file看起来像:
, dst=00.000.00.000, proto=TCP, dpt=80
, dst=00.000.00.000, proto=TCP, dpt=80
, dst=00.000.00.000, proto=TCP, dpt=80
, dst=00.000.00.000, proto=TCP, dpt=80
, dst=00.000.00.000, proto=TCP, dpt=80
I was coding under the last line of the above script, within the loops. 我在循环中在上述脚本的最后一行下进行编码。 The
new_text_file
is ip_file
in my script and everything must be in Python. 在我的脚本中,
new_text_file
是ip_file
,所有内容都必须在Python中。
Question: Is there another way to remove the blank lines in ip_file
? 问题:还有另一种方法可以删除
ip_file
中的空白行吗? OR prevent them from ever being written? 还是阻止他们被写?
I think I understand what you're saying. 我想我明白你的意思。 Try making these changes:
尝试进行以下更改:
for line in open("data.txt"):
new_line = line.rstrip().split()
^^^^^^^^^
if "blocked" in new_line:
if "src="+ip.strip() in new_line:
#write columns to new text file
ip_file.write(", " + new_line[11])
ip_file.write(", " + new_line[12])
try:
ip_file.write(", " + new_line[14])
# ^^^^
except IndexError:
pass
ip_file.write("\n")
#
It seems that the problem was that when new_line[14]
existed, it already contained a newline, so you were appending two newlines. 似乎问题是当
new_line[14]
存在时,它已经包含换行符,因此您要追加两个换行符。 The above code rstrips any newline off line before you split it, then appends a single newline no matter what at the end of the inner for loop. 上面的代码在拆分之前将所有换行符脱机,然后在内部for循环的末尾附加一个换行符。
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