from pathlib import Path
p=Path('SYS/pipeline.py')
s=p.read_text(encoding='utf-8')
lines=s.splitlines()
stack=[]
for i,l in enumerate(lines,1):
    stripped=l.strip()
    # Skip commented lines
    if stripped.startswith('#'):
        continue
    # compute indent as leading spaces (tabs are converted)
    indent = len(l) - len(l.lstrip(' '))
    if stripped.startswith('try:'):
        stack.append((indent, i))
    if stripped.startswith('except ') or stripped=='except:' or stripped.startswith('finally:'):
        # find the most recent try with same indent
        for idx in range(len(stack)-1, -1, -1):
            if stack[idx][0] == indent:
                stack.pop(idx)
                break
        else:
            # no matching try at same indent
            print(f"Found {stripped.split()[0]} at line {i} with no matching try at same indent")

print('Unmatched try count', len(stack))
if stack:
    print('Unmatched try positions (indent, line):', stack)
    for indent, lineno in stack:
        start = max(1, lineno - 10)
        end = min(len(lines), lineno + 10)
        print(f"Context around line {lineno}:")
        for i in range(start, end + 1):
            print(f"{i:5d}: {lines[i-1]}")
else:
    print("All try statements appear matched")