Label checker latex

script.py

import os
import re

def analyze_tex_labels(directory='.'):
    label_pattern = re.compile(r'\\label{q(\d+)}')
    numbers = set()

    for root, dirs, files in os.walk(directory):
        for filename in files:
            if filename.endswith('.tex'):
                file_path = os.path.join(root, filename)
                try:
                    with open(file_path, 'r', encoding='utf-8') as file:
                        content = file.read()
                        matches = label_pattern.findall(content)
                        numbers.update(map(int, matches))
                except Exception as e:
                    print(f"Error reading file {file_path}: {e}")

    if not numbers:
        print("No labels found.")
        return

    largest_number = max(numbers)
    print(f"The largest number is: {largest_number}")

    gaps = []
    for i in range(1, largest_number):
        if i not in numbers:
            gaps.append(i)

    if gaps:
        print("The following gaps were found:")
        print(", ".join(map(str, gaps)))
    else:
        print("No gaps found in the sequence.")

    print(f"Total unique numbers found: {len(numbers)}")

analyze_tex_labels()

def check_answer_labels(directory='.'):
    answer_pattern = re.compile(r'\\answer{.*?}')
    label_pattern = re.compile(r'\\label{.*?}')

    issues_found = False

    for root, dirs, files in os.walk(directory):
        for filename in files:
            if filename.endswith('.tex'):
                file_path = os.path.join(root, filename)
                try:
                    with open(file_path, 'r', encoding='utf-8') as file:
                        lines = file.readlines()
                        for line_number, line in enumerate(lines, 1):
                            answer_match = answer_pattern.search(line)
                            if answer_match:
                                if not label_pattern.search(line[answer_match.end():]):
                                    next_line = lines[line_number] if line_number < len(lines) else ""
                                    if not label_pattern.search(next_line):
                                        print(f"File: {file_path}")
                                        print(f"Line {line_number}: Answer without label")
                                        print(f"Content: {line.strip()}")
                                        print()
                                        issues_found = True

                except Exception as e:
                    print(f"Error reading file {file_path}: {e}")
                    print()

    if not issues_found:
        print("No issues found. All \\answer{} commands are followed by \\label{}.")

check_answer_labels()