Question

我希望在一个短语出现的行开头处拆分一些文字。这是一些示例文本：

Loopback0 is up, line protocol is up
  Internet Address 10.90.3.38/32, Area 303953, Attached via Network Statement
  Process ID 1, Router ID 10.90.3.38, Network Type LOOPBACK, Cost: 1
  Topology-MTID    Cost    Disabled    Shutdown      Topology Name
        0           1         no          no            Base
  Loopback interface is treated as a stub Host
GigabitEthernet0/1 is up, line protocol is up
  Internet Address 10.1.1.1/29, Area 303953, Attached via Network Statement
  Process ID 1, Router ID 10.90.3.38, Network Type BROADCAST, Cost: 1
  Topology-MTID    Cost    Disabled    Shutdown      Topology Name
        0           1         no          no            Base
  Transmit Delay is 1 sec, State DR, Priority 1
  Designated Router (ID) 10.90.3.38, Interface address 10.1.1.1
  No backup designated router on this network
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
    oob-resync timeout 40
    No Hellos (Passive interface)
  Supports Link-local Signaling (LLS)
  Cisco NSF helper support enabled
  IETF NSF helper support enabled
  Index 3/3, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 0, maximum is 0
  Last flood scan time is 0 msec, maximum is 0 msec
  Neighbor Count is 0, Adjacent neighbor count is 0
  Suppress hello for 0 neighbor(s)
  Message digest authentication enabled
      No key configured, using default key id 0

我想搜索＆＃34;启动，行协议启动＆＃34;，然后让re.split（）仅在此字符串出现的行的开头拆分

像这样：

Loopback0 is up, line protocol is up
  Internet Address 10.90.3.38/32, Area 303953, Attached via Network Statement
  Process ID 1, Router ID 10.90.3.38, Network Type LOOPBACK, Cost: 1
  Topology-MTID    Cost    Disabled    Shutdown      Topology Name
        0           1         no          no            Base
  Loopback interface is treated as a stub Host

然后：

GigabitEthernet0/1 is up, line protocol is up
  Internet Address 10.1.1.1/29, Area 303953, Attached via Network Statement
  Process ID 1, Router ID 10.90.3.38, Network Type BROADCAST, Cost: 1
  Topology-MTID    Cost    Disabled    Shutdown      Topology Name
        0           1         no          no            Base
  Transmit Delay is 1 sec, State DR, Priority 1
  Designated Router (ID) 10.90.3.38, Interface address 10.1.1.1
  No backup designated router on this network
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
etc

目前，如果我搜索＆＃34;已启动，则行协议已启动＆＃34; - 它在那个确切的位置分开。

由于

Answer 1

我假设你的字符串中有新行/转义字符：

# big_string is the data you want to split
esc_char = "\\n"; search_str = "is up, line protocol is up"
output = []
for line big_string.split( esc_char ):
    if not output:
        output.append(line)
    else:
        if search_str in line:
            output.append(line)
        else:
            output[-1].extend(line)

<强>声明：我有点不确定你将如何将你的big_string分成几行，也许其他人可以改进那部分

如果在该行中稍后找到文本，如何从行的开头拆分文本

1 个答案: