Question

我有一个看起来像这样的CSV文件：

"Estimated 10:10 AM
"	"10:40 AM	KL1973	
"	"Amsterdam (AMS)
"	"KLM	B738 (PH-BXB)	
"
"Scheduled
"	"10:50 AM	AY753	
"	"Helsinki (HEL)
"	"Finnair	A321 (OH-LZL)	
"
"Estimated 10:49 AM
"	"10:50 AM	W62282	
"	"Brussels (CRL)
"	"Wizz Air	A321 (HA-LXS)	
"
"Scheduled
"	"10:50 AM	OS713	
"	"Vienna (VIE)
"	"Austrian Airlines	DH8D (OE-LGL)	
"
"Scheduled
"	"11:00 AM	W62272	
"	"Eindhoven (EIN)
"	"Wizz Air	A321 (HA-LXQ)	
"

如果包含单词“Scheduled”，我想知道如何删除一行？

我尝试使用类似的东西，但它不起作用（Python 2.7）。没有错误消息，它正在运行但什么都不做：

import urllib2
import unicodecsv as csv
import os
import sys
import io
import time
import datetime
import pandas as pd
from bs4 import BeautifulSoup
import sys
import re

def to_2d(l,n):
    return [l[i:i+n] for i in range(0, len(l), n)]
 
f = open('air.txt', 'r')
x = f.readlines()

filename=r'output.csv'

resultcsv=open(filename,"wb")
output=csv.writer(resultcsv, delimiter=';',quotechar = '"', quoting=csv.QUOTE_NONNUMERIC, encoding='latin-1')
 
maindatatable = to_2d(x, 4)
print maindatatable
output.writerows(maindatatable)

resultcsv.close()

open("output.csv", "r+") as f:
t = f.read() to_delete = '"Scheduled'
   f.seek(0) for line in t.split('\n'):
   if line != to_delete:
      f.write(line + '\n') f.truncate()

还有一个问题。如何删除此csv文件中的前3行和后3行？

对不起，如果这看起来像一个非常简单的问题，但我是python的新手，非常感谢这方面的任何帮助，谢谢!!

Answer 1

你没有像我一样编写你的代码：你不尊重身份，你没有在开放前放置“带”字（文件......

请用此更新：

>  with open("file.csv", "r+") as f:
>     t = f.read()
>     to_delete = '"Scheduled'
>     f.seek(0)
>     for line in t.split('\n'):
>         if line != to_delete:
>             f.write(line + '\n')
>     f.truncate()

如果它包含特定的单词，我如何从csv中删除这些行？

1 个答案: