Python pandas read_csv
在单独写入时提供正确的输出:
import pandas as pd
def bgp_neighbor_status():
data = pd.read_csv('E:\\Python-Scripts\\bgp-result.txt', delim_whitespace=True, header=None)
for index, row in data.iterrows():
if row[9] == 'Down' or row[9] == 'Idle' or row[9] == 'Active':
print(f"Neighbor {row[0]} is down")
else:
pass
bgp_neighbor_status()
显示预期的输出:
Neighbor 10.0.11.101 is down
但是,当我将相同的函数与这样的另一个函数组合时,我收到错误: - pandas.errors.EmptyDataError:没有要从文件解析的列
from __future__ import print_function
from netmiko import ConnectHandler
import pandas as pd
import sys
import time
import select
import paramiko
import re
bgp_result_file = open(r'E:\\Python-Scripts\\bgp-result.txt','w')
old_stdout = sys.stdout
sys.stdout = bgp_result_file
platform = 'cisco_ios'
username = 'javed'
password = 'cisco'
ip_add_file = open(r'E:\\Python-Scripts\\IPAddressList.txt', 'r')
def check_bgp(ip_add_file):
for host in ip_add_file:
host = host.rstrip('\n')
connect = ConnectHandler(device_type=platform, ip=host, username=username, password=password)
output = connect.send_command('terminal length 0')
output = connect.send_command('enable')
bgp_status = connect.send_command('show ip bgp summary | be N')
print (bgp_status)
def bgp_neighbor_status():
data = pd.read_csv('E:\\Python-Scripts\\bgp-result.txt', delim_whitespace=True, header=None)
for index, row in data.iterrows():
if row[9] == 'Down' or row[9] == 'Idle' or row[9] == 'Active':
print(f"Neighbor {row[0]} is down")
else:
pass
check_bgp(ip_add_file)
bgp_neighbor_status()
这一行就在这里:
bgp_result_file = open(r'E:\\Python-Scripts\\bgp-result.txt','w')
该行在脚本开始时执行,基本上清除了该文件。从文档:https://docs.python.org/2/library/functions.html#open
最常用的模式值是'r'用于读取,'w'用于写入(截断文件,如果它已经存在),'a'用于追加(在某些Unix系统上,这意味着所有写入都附加到结尾)无论当前的搜索位置如何,都是文件的。 [...]
截断文件(如果已存在)。