Sample plugin showing how to edit, replace and erase text in a Sublime Text plugoin

edit_examples.py

import sublime
import sublime_plugin


class ExampleCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        self.view.insert(edit, 0, "Hello, World!")


class SecondExampleCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        span = sublime.Region(0, len(self.view))
        self.view.replace(edit, span, "Hello, World!")


class ThirdExampleCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        pt = self.view.sel()[0].b
        line = self.view.line(pt)
        # line = self.view.full_line(pt)
        self.view.erase(edit, line)


class FourthExampleCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        spans = self.view.find_all('Command')
        for span in spans:
            self.view.replace(edit, span, 'Cmd')


class FifthExampleCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        adjust = 0
        diff = len('Command') - len('Cmd')

        for span in self.view.find_all('Command'):
            new_span = sublime.Region(span.a - adjust, span.b - adjust)
            self.view.replace(edit, new_span, 'Cmd')
            adjust += diff

This is the example plugin from Lesson #19 in Plugin 101 for Sublime Text, [https://youtu.be/8OYtWOdw3TY](How do plugins modify the text in a file?)