code: def remove_template(s):
      """Remove template wikimedia markup.
  
      Parameters
      ----------
      s : str
          String containing markup template.
  
      Returns
      -------
      str
          Сopy of `s` with all the `wikimedia markup template <http://meta.wikimedia.org/wiki/Help:Template>`_ removed.
  
      Notes
      -----
      Since template can be nested, it is difficult remove them using regular expressions.
  
      """
      # Find the start and end position of each template by finding the opening
      # '{{' and closing '}}'
      n_open, n_close = 0, 0
      starts, ends = [], [-1]
      in_template = False
      prev_c = None
      for i, c in enumerate(s):
          if not in_template:
              if c == "{" and c == prev_c:
                  starts.append(i - 1)
                  in_template = True
                  n_open = 1
          if in_template:
              if c == "{":
                  n_open += 1
              elif c == "}":
                  n_close += 1
              if n_open == n_close:
                  ends.append(i)
                  in_template = False
                  n_open, n_close = 0, 0
          prev_c = c
  
      # Remove all the templates
      starts.append(None)
      return "".join(
          s[end + 1 : start] for end, start in zip(ends, starts)
      )
  
imports: import bz2
  import logging
  import multiprocessing
  import re
  import signal
  from pickle import PicklingError
  from xml.etree.ElementTree import iterparse
  from gensim import utils
  from gensim.corpora.dictionary import Dictionary
  from gensim.corpora.textcorpus import TextCorpus
label_desc: Use image node_id 5 for calling a global function with example usage: remove_template(s) and returns: str