Python-сообщество

 f = open('russianpost.log', 'r')
for line in f.xreadlines():
	if '524426745' in line:
		print line	
f.close()

  
>>> import re
>>> 
>>> text = """
... 
... <code="524426745">
... <id=1>
... <id=2>
... </code="524426745">
... 
... <code="524426442">
... <id=3>
... <id=4>
... </code="524422442">
... 
... <code="524426443">
... <id=5>
... <id=6>
... </code="524422443">
... 
... """
>>> 
>>> def split_records(s):
...     pat = r'<code.*?</code.*?>'
...     out = re.findall(pat, s, re.DOTALL)
...     return out
... 
>>> def parse_record(s):
...     pat = r'<code="(.*)">(.*)</code.*>'
...     match = re.search(pat, s, re.DOTALL)
...     if match is not None:
...         number = match.group(1)
...         content = parse_content(match.group(2))
...         return (number, content)
...     else:
...         return None
... 
>>> def parse_content(s):
...     pat = r'<id=(.*)>'
...     out = tuple(re.findall(pat, s))
...     return out
... 
>>> records = split_records(text)
>>> records
['<code="524426745">\n<id=1>\n<id=2>\n</code="524426745">', '<code="524426442">\n<id=3>\n<id=4>\n</code="524422442">', '<code="524426443">\n<id=5>\n<id=6>\n</code="524422443">']
>>> 
>>> out = list(map(parse_record, records))
>>> out
[('524426745', ('1', '2')), ('524426442', ('3', '4')), ('524426443', ('5', '6'))]
>>>

 with open('2.txt', 'r') as f:
    start = False
    for line in f:
        if '<code="524426745">' in line:
            start = True
        if start:
            print(line)
        if '</code="524426745">' in line:
            start = False

<code="524426745">
<id=1>
<id=2>
</code="524426745">

('524426745', ('1', '2'))

 in_log = 'in.log'
out_log = 'out.log'
def parse_line(input_file, start_string, end_string):
        start_parse = False
        f = open (input_file, 'r')
        for line in f.xreadlines():
                if start_string in line:
                        start_parse = True
                if start_parse:
                        print line,
                if end_string in line:
                        start_parse = False
        f.close()
def search_line():
        f = open (in_log, 'r')
        for lines in f.xreadlines():
                line = lines.split()
                parse_line(out_log, line[0], '</')
        f.close()
search_line()

 import re
def cvt(fnd):
    if fnd.group(1)=="code":
        return fnd.group(2) +" :\n"
    if fnd.group(1)=="id":
        return "  - " + fnd.group(2)
    return ""
with open("a.xml","r") as f_in, open("a.yaml","w") as f_out:
    for i in f_in:
        f_out.write(re.sub("<(.+)=(.+)>",cvt,i))

 import yaml
with open("a.yaml","r") as f:
    d=yaml.load(f)