import re
file="""*some random text*
...
...
...
tag/delimiter 1
text 1   #extract
text 2   #extract
...      #extract
...      #extract
text n   #extract
tag/ending_delimiter
*some random text*
...
...
...
tag/delimiter 2
text 1   #extract
text 2   #extract
...      #extract
...      #extract
text n   #extract
tag/ending_delimiter
*some random text*
...
...
...
tag/delimiter n
text 1   #extract
text 2   #extract
...      #extract
...      #extract
text n   #extract
tag/ending_delimiter
*some random text until the file ends*"""
data_file = file.splitlines()
block = []
found = False
list_of_starting_delimiters = ['tag/delimiter']
attribute_end = 'tag/ending_delimiter'
curr = []
 
for elem in list_of_starting_delimiters:
    for line in data_file:
        if found:
            curr.append(line)
            if line.strip().startswith(attribute_end):
                found = False
                block.append("\n".join(curr))
                curr = []
        else:
            if line.strip().startswith(elem):
                found = True
                curr.append(line.strip()) #block = elem
 
if len(curr) > 0:
	block.append(curr)
 
for b in block:
	print(b)
	print("---Next block---")
 
 

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