打印匹配值的行号

Question

我有一个python脚本，可以用来解析日志文件并打印出匹配错误等。我想做的还是打印找到匹配条目的行号。

我看过一些类似的文章，例如； 搜索文件并找到确切的匹配和打印行？ 但是我无法成功地应用示例。

我的代码是：

from sys import argv

script, filename = argv

with open(filename) as f:
        data = f.read().splitlines()
        # Process counts and matches of events:
        assertmatch = [s for s in data if "Assertion" in s]
        assertcount = len(assertmatch)

if assertcount > 0:
    print " "
    print "ASSERTIONS:"
    print '\n'.join([str(myelement) for myelement in assertmatch])

Answer 1

您可以将每行读入字典，键为行号，然后在每个字典项上运行匹配算法。 如果匹配，请打印密钥。

content = {}

with open(filename) as f:
    lineNum = 0
    for line in f:
        content[lineNum] = line
        lineNum = lineNum + 1

# Do search for each in content, if match, print line key.

Answer 2

print [(i,line) for i,line in enumerate(open(filename),1) if "Assertion" in line]

Answer 3

我可以使用枚举建立您的assertmatch 。 该代码将类似于以下内容：

assertmatch = []
for i, s in enumerate(data, 1):
    if "Assertion" in s:
        assertmatch.append('Line %05d: %s' % (i, s,))

无需更改其余代码。