#count lines

Writing and editing large document is not an easy task while writing in any word editor as grammar and spelling mistakes can be easily located, but for duplicate words, you have to search the whole document manually

# https://stackoverflow.com/questions/845058/how-to-get-line-count-of-a-large-file-cheaply-in-python/68385697#68385697 def count_lines_in_file_fast(fname): def _make_gen(reader): while True: b = reader(2 ** 16) if not b: break yield b with open(fname, "rb") as f: count = sum(buf.count(b"\n") for buf in _make_gen(f.raw.read)) return count