Turns a normal LaTeX environment into an align environment.

readme.md

Description

This script looks for Markdown files in a specified directory, and converts a normal LaTeX environment:

$$
...
$$

to an align environment:

$$\begin{align}
...
\end{align}$$

Note that you can change 'align' on lines 25 and 28 to another type of environment.

Note

• This will overwrite the file contents, so make a backup copy of your files before you run it
• Before you run the script, open it in a text editor (i.e. Notepad) and change line 3 to your target folder
• This won't touch files in subdirectories. You will have to change line 3 again and re-run the program for any notes in other directories or subdirectories

latex-aligner.py

import os
# MUST SET YOUR DIRECTORY ON THE FOLLOWING LINE - i.e. "C:\\Users\\User1\\Documents"
DIRECTORY = ""


def getFileNames():
    filelist = []   # List of files that we will work on is stored here
    files = os.listdir(DIRECTORY)   # Contains a list of all files in the directory
    for i in files:
        # Find all .md files, store names in filelist:
        if i.endswith(".md"):
            filelist.append(i)
    return filelist


def insert(textfiles):
    for i in textfiles:
        print(f'Opening {i}')
        with open(i, "r") as file:
            content = file.readlines()
            # Read file contents as a list, each line is a new element
        print(f'Original content: {content}')
        for x in range(0, len(content)):
            if content[x] == '$$\n':
                content[x] = "$$\\begin{align}\n"
                for y in range(x+1, len(content)):
                    if content[y] == '$$' or content[y] == '$$\n':
                        content[y] = "\\end{align}$$\n"
                        x = y
                        break
        print(f'Updated content: {content}')
        print(f'Writing to {i}')
        with open(i, "w") as file:
            for x in content:
                file.write(x)
        print('-'*50)


textfiles = getFileNames()
insert(textfiles)