Created
April 4, 2023 11:28
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Get specific lines from log after a specific pattern
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import re | |
import linecache | |
def find_line_with_pattern(log_file_name, pattern): | |
lines = open(log_file_name).readlines() | |
for i, line in enumerate(lines): | |
if re.match(pattern, line): | |
return i+1 | |
def get_lines_data(log_file_name, from_line, how_many_lines): | |
numbers = [from_line+x for x in range(1, how_many_lines+1)] | |
# print(numbers) | |
lines = [] | |
for number in numbers: | |
lines.append(linecache.getline(log_file_name, number)) | |
return "".join(lines) | |
def get_log_lines(log_file_name, find_pattern, lines_after_pattern): | |
found_line_number = find_line_with_pattern(log_file_name, find_pattern) | |
log_lines = get_lines_data(log_file_name, found_line_number, lines_after_pattern) | |
print(log_lines) | |
if __name__ == "__main__": | |
get_log_lines( | |
log_file_name="D:\device_logs.txt", | |
find_pattern=".*, job document:", | |
lines_after_pattern=6 | |
) |
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