Parsing file and get a specific text

[dds69]

Hi everyone,

I'm new in scripting with python (in general too). I need some help to get a block text in a file.

This is my code :

stop = "end"
last_line = 0
searchtxtDetected = False
with open("20181107-115829-192.168.220.201.txt", 'r') as file:
	for txt in file:
		if 'show running-config' in txt:
			searchtxtDetected = True
			continue
		if searchtxtDetected:
			print (txt)
			#last_line += 1
			if txt == stop:
				break

Nevertheless, the code start when show running-config is parse but dont stop when it match my variable and print the entire file end !

The file to check my code
https://ufile.io/4eiaa