python读取txt指定内容并排好存档

问题遇到的现象和发生背景

原始txt内容：
Connected to IP1
BIP1 PORT1 N/A
.1
BIP2 PORT2 N/A
.2
BIP3 PORT3 N/A
.3

Connected to IP2
2bip1 port1 N/A
.1
2bip2 port2 N/A
.2
2bip3 port3 N/A
.3
想要的结果txt内容：
Connected to IP1，BIP1，PORT1 N/A， .1
Connected to IP1，BIP2，PORT2 N/A， .2
Connected to IP1，BIP3，PORT3 N/A， .3
Connected to IP2，2bip1，port1 N/A， .1
Connected to IP2，2bip2，port2 N/A， .2
Connected to IP2，2bip3，port3 N/A， .3

我的解答思路和尝试过的方法

将txt转成字典，让Connected to IP1和Connected to IP2成为键，bip行成为值。把bip行没两行，整合到一行。
最后没成功，求解答或思路，谢谢。

#Connected to IP1，BIP1，PORT1 N/A， .1
Connected = ''
ports = ''
point = ''
with open('test.txt' , 'r') as f1:
    for one in f1.readlines():
        one = one.replace('\n','')
        if 'Connected' in one:
            Connected = one
        elif 'port' in one or 'PORT' in one:
            ports = one
        elif '.' in one:
            point = one
        else:
            pass
        with open('save.txt' , 'a') as f2:
            if Connected !='' and ports!='' and point!='':
                f2.write(Connected + ', ' + ports+ ', '+ point + '\n')
                ports = ''
                point = ''

with open('raw_data.txt', 'r') as fp:
    contents = list()
    lines = fp.readlines()
    for i in range(0, len(lines), 8):
        key = lines[i].strip()
        for j in range(1, 7, 2):
            print(lines[i+j])
            a, b, c = lines[i+j].strip().split()
            d = lines[i+j+1].strip()
            contents.append('%s, %s, %s %s, %s'%(key, a, b, c, d))

with open('out_data.txt', 'w') as fp:
    fp.write('\n'.join(contents))