我有日志文件(以 YYMMDD 格式命名),我想创建一个脚本,只从文件中获取重要信息(比如包含“O:NVS:VOICE”的行)。我以前从未使用过 Python,所以请帮忙!
请您参考如下方法:
这应该能让你很好地开始:
infile = r"D:\Documents and Settings\xxxx\Desktop\test_log.txt"
important = []
keep_phrases = ["test",
"important",
"keep me"]
with open(infile) as f:
f = f.readlines()
for line in f:
for phrase in keep_phrases:
if phrase in line:
important.append(line)
break
print(important)
它绝不是完美的,例如没有异常处理或模式匹配,但您可以很容易地将它们添加到其中。查看正则表达式,这可能比短语匹配更好。如果您的文件非常大,请逐行读取它以避免 MemoryError。
输入文件:
This line is super important!
don't need this one...
keep me!
bla bla
not bothered
ALWAYS include this test line
输出:
['This line is super important!\n', 'keep me!\n', 'ALWAYS include this test line']
注意:这是 Python 3.3。
