[英]Extracting IP addresses from a file
我正在嘗試從Python中的asp
文件提取IP地址,該文件看起來像這樣:
onInternalNet = (
isInNet(hostDNS, "147.163.1.0", "255.255.0.0") ||
isInNet(hostDNS, "123.264.0.0", "255.255.0.0") ||
isInNet(hostDNS, "137.5.0.0", "255.0.0.0") ||
isInNet(hostDNS, "100.01.02.0", "255.0.0.0") ||
isInNet(hostDNS, "172.146.30.0", "255.240.0.0") ||
isInNet(hostDNS, "112.268.0.0", "255.255.0.0") ||
我試圖提取它們的方法是使用正則表達式:
if re.compile(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$", line):
但是我遇到一個錯誤:
Traceback (most recent call last):
File "pull_proxy.py", line 27, in <module>
write_to_file(extract_proxies(in_file), out_file)
File "pull_proxy.py", line 8, in extract_proxies
if re.compile(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$", line):
File "C:\Python27\lib\re.py", line 194, in compile
return _compile(pattern, flags)
File "C:\Python27\lib\re.py", line 233, in _compile
bypass_cache = flags & DEBUG
TypeError: unsupported operand type(s) for &: 'str' and 'int'
我不明白為什么會收到該錯誤,該如何處理該代碼以使其像我希望的那樣提取信息?
import re
def extract_proxies(in_file):
buffer = []
for line in in_file:
if re.compile(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$", line):
print "{} appened to buffer.".format(line)
buffer.append(line)
else:
pass
return buffer
def write_to_file(buffer, out_file):
for proxy in buffer:
with open(out_file, "a+") as res:
res.write(proxy)
if __name__ == '__main__':
print "Running...."
in_file = "C:/Users/thomas_j_perkins/Downloads/test.asp"
out_file = "c:/users/thomas_j_perkins/Downloads/results.txt"
write_to_file(extract_proxies(in_file), out_file)
編輯
意識到我沒有打開文件:
import re
def extract_proxies(in_file):
buffer = []
for line in in_file:
if re.compile(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$", line):
print "{} appened to buffer.".format(line)
buffer.append(line)
else:
pass
in_file.close()
return buffer
def write_to_file(buffer, out_file):
for proxy in buffer:
with open(out_file, "a+") as res:
res.write(proxy)
if __name__ == '__main__':
print "Running...."
in_file = "C:/Users/thomas_j_perkins/Downloads/PAC-Global-Vista.asp"
out_file = "c:/users/thomas_j_perkins/Downloads/results.txt"
write_to_file(extract_proxies(open(in_file, "r+")), out_file)
仍然出現相同的錯誤:
Running....
Traceback (most recent call last):
File "pull_proxy.py", line 28, in <module>
write_to_file(extract_proxies(open(in_file)), out_file)
File "pull_proxy.py", line 8, in extract_proxies
if re.compile(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$", line):
File "C:\Python27\lib\re.py", line 194, in compile
return _compile(pattern, flags)
File "C:\Python27\lib\re.py", line 233, in _compile
bypass_cache = flags & DEBUG
TypeError: unsupported operand type(s) for &: 'str' and 'int'
re.compile
期望沒有line
(字符串)的適當的flags
參數(整數)。
你應該做re.match
而不是re.compile
:
將正則表達式模式編譯為正則表達式對象,可使用其
match()
和search()
方法進行匹配...
您的最初錯誤
TypeError: unsupported operand type(s) for &: 'str' and 'int'
正是@Moses在他的回答中所說的。 標志應該是int值,而不是字符串。
您應該編譯一次正則表達式。 同樣,遍歷行時需要使用打開的文件句柄。
匯入
IP_MATCHER = re.compile(r"(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})")
def extract_proxies(fh):
for line in fh:
line = line.strip()
match = IP_MATCHER.findall(line)
if match:
print "{} appened to buffer.".format(line)
print match
else:
pass
def write_to_file(buffer, out_file):
for proxy in buffer:
with open(out_file, "a+") as res:
res.write(proxy)
if __name__ == '__main__':
print "Running...."
in_file = "in.txt"
with open(in_file) as fh:
extract_proxies(fh)
如果只想要第一個,它將找到所有匹配項,然后使用IP_MATCHER.search
和match.groups()
。 當然,這是假設您實際上要提取IP地址。
例如:
def extract_proxies(fh):
for line in fh:
line = line.strip()
match = IP_MATCHER.findall(line)
if len(match) == 2:
print "{} appened to buffer.".format(line)
ip, mask = match
print "IP: %s => Mask: %s" % (ip, mask)
else:
pass
請檢查以下代碼:
做過幾次改動
import re
def extract_proxies(in_file):
buffer1 = []
#Regex compiled here
m = re.compile(r'\s*\w+\(\w+,\s+\"(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})\"')
for line in in_file:
#Used here to match
r = m.match(line)
if r is not None:
print "{} appened to buffer.".format(line)
buffer1.append(r.group(1))
else:
pass
in_file.close()
return buffer1
def write_to_file(buffer1, out_file):
for proxy in buffer1:
with open(out_file, "a+") as res:
res.write(proxy+'\n')
if __name__ == '__main__':
print "Running...."
in_file = "sample.txt"
out_file = "results.txt"
write_to_file(extract_proxies(open(in_file)), out_file)
輸出:
C:\Users\dinesh_pundkar\Desktop>python c.py
Running....
isInNet(hostDNS, "147.163.1.0", "255.255.0.0") ||
appened to buffer.
isInNet(hostDNS, "123.264.0.0", "255.255.0.0") ||
appened to buffer.
isInNet(hostDNS, "137.5.0.0", "255.0.0.0") ||
appened to buffer.
isInNet(hostDNS, "100.01.02.0", "255.0.0.0") ||
appened to buffer.
isInNet(hostDNS, "172.146.30.0", "255.240.0.0") ||
appened to buffer.
isInNet(hostDNS, "112.268.0.0", "255.255.0.0") || appened to buffer.
C:\Users\dinesh_pundkar\Desktop>python c.py
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