Jekyll to Pelican convertor. Only fixes categories, tags list to comma separated tags and single category

jekyll2pelican.py

# encoding: utf-8
import os
filenames = filter(lambda x: x.endswith(".md"), os.listdir("."))

def parse(filename):
    print filename
    lines = open(filename).read().split("\n")
    tags_i = None
    last_tag_i = None
    tags = []
    for i, line in enumerate(lines):
        line_ = line.strip()
        if line_ == "category:":
            category_i = i
        if line_ == "tags:":
            tags_i = i
        if tags_i and line_.startswith("-"):
            tags.append(line_[1:].strip())
            last_tag_i = i


    categories = map(lambda x: x.split("-")[-1].strip(), lines[category_i+1:tags_i])

    tags_ = set(tags)
    categories_ = set(categories)

    if "Türkçe" in categories_:
        category = "Türkçe"
    else:
        category = "English"
    tags_ = tags_.union(categories_)

    try:
        tags_.remove("Türkçe")
        tags_.remove("English")
    except:
        pass

    txt = ""
    txt += "\n".join(lines[:category_i]) + "\n"
    txt += "Category: " + category + "\n"
    txt += "Tags: " + ", ".join(tags_) + "\n\n"

    if last_tag_i:
        txt += "\n".join(lines[last_tag_i+1:]) + "\n"
    else:
        txt += "\n".join(lines[category_i + len(categories)+ 1:]) + "\n"

    o = open("new/" + filename, "w")
    o.write(txt)
    o.close()

for filename in filenames:
    parse(filename)