diff --git a/.pylint2rc b/.pylint2rc
new file mode 100644
index 00000000000..716f31d2f1e
--- /dev/null
+++ b/.pylint2rc
@@ -0,0 +1,379 @@
+[MASTER]
+
+# Specify a configuration file.
+#rcfile=
+
+# Python code to execute, usually for sys.path manipulation such as
+# pygtk.require().
+#init-hook=
+
+# Add files or directories to the blacklist. They should be base names, not
+# paths.
+ignore=CVS
+
+# Pickle collected data for later comparisons.
+persistent=yes
+
+# List of plugins (as comma separated values of python modules names) to load,
+# usually to register additional checkers.
+load-plugins=
+
+# Use multiple processes to speed up Pylint.
+jobs=0
+
+# Allow loading of arbitrary C extensions. Extensions are imported into the
+# active Python interpreter and may run arbitrary code.
+unsafe-load-any-extension=no
+
+# A comma-separated list of package or module names from where C extensions may
+# be loaded. Extensions are loading into the active Python interpreter and may
+# run arbitrary code
+extension-pkg-whitelist=
+
+# Allow optimization of some AST trees. This will activate a peephole AST
+# optimizer, which will apply various small optimizations. For instance, it can
+# be used to obtain the result of joining multiple strings with the addition
+# operator. Joining a lot of strings can lead to a maximum recursion error in
+# Pylint and this flag can prevent that. It has one side effect, the resulting
+# AST will be different than the one from reality.
+optimize-ast=no
+
+
+[MESSAGES CONTROL]
+
+# Only show warnings with the listed confidence levels. Leave empty to show
+# all. Valid levels: HIGH, INFERENCE, INFERENCE_FAILURE, UNDEFINED
+confidence=
+
+# Enable the message, report, category or checker with the given id(s). You can
+# either give multiple identifier separated by comma (,) or put this option
+# multiple time (only on the command line, not in the configuration file where
+# it should appear only once). See also the "--disable" option for examples.
+#enable=
+
+# Disable the message, report, category or checker with the given id(s). You
+# can either give multiple identifiers separated by comma (,) or put this
+# option multiple times (only on the command line, not in the configuration
+# file where it should appear only once).You can also use "--disable=all" to
+# disable everything first and then reenable specific checks. For example, if
+# you want to run only the similarities checker, you can use "--disable=all
+# --enable=similarities". If you want to run only the classes checker, but have
+# no Warning level messages displayed, use"--disable=all --enable=classes
+# --disable=W"
+disable=import-star-module-level,old-octal-literal,oct-method,print-statement,unpacking-in-except,parameter-unpacking,backtick,old-raise-syntax,old-ne-operator,long-suffix,dict-view-method,dict-iter-method,metaclass-assignment,next-method-called,raising-string,indexing-exception,raw_input-builtin,long-builtin,file-builtin,execfile-builtin,coerce-builtin,cmp-builtin,buffer-builtin,basestring-builtin,apply-builtin,filter-builtin-not-iterating,using-cmp-argument,useless-suppression,raw-checker-failed,range-builtin-not-iterating,suppressed-message,invalid-name,no-absolute-import,old-division,cmp-method,bad-inline-option,reload-builtin,zip-builtin-not-iterating,intern-builtin,unichr-builtin,reduce-builtin,standarderror-builtin,unicode-builtin,xrange-builtin,coerce-method,delslice-method,getslice-method,setslice-method,input-builtin,round-builtin,file-ignored,locally-disabled,hex-method,nonzero-method,map-builtin-not-iterating,deprecated-pragma,missing-docstring,missing-module-docstring,raise-missing-from,invalid-name
+
+
+[REPORTS]
+
+# Set the output format. Available formats are text, parseable, colorized, msvs
+# (visual studio) and html. You can also give a reporter class, eg
+# mypackage.mymodule.MyReporterClass.
+output-format=text
+
+# Put messages in a separate file for each module / package specified on the
+# command line instead of printing them on stdout. Reports (if any) will be
+# written in a file name "pylint_global.[txt|html]".
+files-output=no
+
+# Tells whether to display a full report or only the messages
+reports=no
+
+# Python expression which should return a note less than 10 (10 is the highest
+# note). You have access to the variables errors warning, statement which
+# respectively contain the number of errors / warnings messages and the total
+# number of statements analyzed. This is used by the global evaluation report
+# (RP0004).
+evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10)
+
+# Template used to display messages. This is a python new-style format string
+# used to format the message information. See doc for all details
+#msg-template=
+
+
+[FORMAT]
+
+# Maximum number of characters on a single line.
+max-line-length=100
+
+# Regexp for a line that is allowed to be longer than the limit.
+ignore-long-lines=^\s*(# )?<?https?://\S+>?$
+
+# Allow the body of an if to be on the same line as the test if there is no
+# else.
+single-line-if-stmt=no
+
+# List of optional constructs for which whitespace checking is disabled. `dict-
+# separator` is used to allow tabulation in dicts, etc.: {1  : 1,\n222: 2}.
+# `trailing-comma` allows a space between comma and closing bracket: (a, ).
+# `empty-line` allows space-only lines.
+no-space-check=trailing-comma,dict-separator
+
+# Maximum number of lines in a module
+max-module-lines=1000
+
+# String used as indentation unit. This is usually "    " (4 spaces) or "\t" (1
+# tab).
+indent-string='    '
+
+# Number of spaces of indent required inside a hanging  or continued line.
+indent-after-paren=4
+
+# Expected format of line ending, e.g. empty (any line ending), LF or CRLF.
+expected-line-ending-format=
+
+
+[MISCELLANEOUS]
+
+# List of note tags to take in consideration, separated by a comma.
+notes=FIXME,XXX,TODO
+
+
+[SPELLING]
+
+# Spelling dictionary name. Available dictionaries: none. To make it working
+# install python-enchant package.
+spelling-dict=
+
+# List of comma separated words that should not be checked.
+spelling-ignore-words=
+
+# A path to a file that contains private dictionary; one word per line.
+spelling-private-dict-file=
+
+# Tells whether to store unknown words to indicated private dictionary in
+# --spelling-private-dict-file option instead of raising a message.
+spelling-store-unknown-words=no
+
+
+[TYPECHECK]
+
+# Tells whether missing members accessed in mixin class should be ignored. A
+# mixin class is detected if its name ends with "mixin" (case insensitive).
+ignore-mixin-members=yes
+
+# List of module names for which member attributes should not be checked
+# (useful for modules/projects where namespaces are manipulated during runtime
+# and thus existing member attributes cannot be deduced by static analysis. It
+# supports qualified module names, as well as Unix pattern matching.
+ignored-modules=
+
+# List of classes names for which member attributes should not be checked
+# (useful for classes with attributes dynamically set). This supports can work
+# with qualified names.
+ignored-classes=optparse.Values,thread._local,_thread._local
+
+# List of members which are set dynamically and missed by pylint inference
+# system, and so shouldn't trigger E1101 when accessed. Python regular
+# expressions are accepted.
+generated-members=
+
+
+[BASIC]
+
+# List of builtins function names that should not be used, separated by a comma
+bad-functions=map,filter,input
+
+# Good variable names which should always be accepted, separated by a comma
+good-names=i,j,k,ex,Run,_
+
+# Bad variable names which should always be refused, separated by a comma
+bad-names=foo,bar,baz,toto,tutu,tata
+
+# Colon-delimited sets of names that determine each other's naming style when
+# the name regexes allow several styles.
+name-group=
+
+# Include a hint for the correct naming format with invalid-name
+include-naming-hint=no
+
+# Regular expression matching correct function names
+function-rgx=[a-z_][a-z0-9_]{2,30}$
+
+# Naming hint for function names
+function-name-hint=[a-z_][a-z0-9_]{2,30}$
+
+# Regular expression matching correct variable names
+variable-rgx=[a-z_][a-z0-9_]{2,30}$
+
+# Naming hint for variable names
+variable-name-hint=[a-z_][a-z0-9_]{2,30}$
+
+# Regular expression matching correct constant names
+const-rgx=(([A-Z_][A-Z0-9_]*)|(__.*__))$
+
+# Naming hint for constant names
+const-name-hint=(([A-Z_][A-Z0-9_]*)|(__.*__))$
+
+# Regular expression matching correct attribute names
+attr-rgx=[a-z_][a-z0-9_]{2,30}$
+
+# Naming hint for attribute names
+attr-name-hint=[a-z_][a-z0-9_]{2,30}$
+
+# Regular expression matching correct argument names
+argument-rgx=[a-z_][a-z0-9_]{2,30}$
+
+# Naming hint for argument names
+argument-name-hint=[a-z_][a-z0-9_]{2,30}$
+
+# Regular expression matching correct class attribute names
+class-attribute-rgx=([A-Za-z_][A-Za-z0-9_]{2,30}|(__.*__))$
+
+# Naming hint for class attribute names
+class-attribute-name-hint=([A-Za-z_][A-Za-z0-9_]{2,30}|(__.*__))$
+
+# Regular expression matching correct inline iteration names
+inlinevar-rgx=[A-Za-z_][A-Za-z0-9_]*$
+
+# Naming hint for inline iteration names
+inlinevar-name-hint=[A-Za-z_][A-Za-z0-9_]*$
+
+# Regular expression matching correct class names
+class-rgx=[A-Z_][a-zA-Z0-9]+$
+
+# Naming hint for class names
+class-name-hint=[A-Z_][a-zA-Z0-9]+$
+
+# Regular expression matching correct module names
+module-rgx=(([a-z_][a-z0-9_]*)|([A-Z][a-zA-Z0-9]+))$
+
+# Naming hint for module names
+module-name-hint=(([a-z_][a-z0-9_]*)|([A-Z][a-zA-Z0-9]+))$
+
+# Regular expression matching correct method names
+method-rgx=[a-z_][a-z0-9_]{2,30}$
+
+# Naming hint for method names
+method-name-hint=[a-z_][a-z0-9_]{2,30}$
+
+# Regular expression which should only match function or class names that do
+# not require a docstring.
+no-docstring-rgx=^_
+
+# Minimum line length for functions/classes that require docstrings, shorter
+# ones are exempt.
+docstring-min-length=-1
+
+
+[ELIF]
+
+# Maximum number of nested blocks for function / method body
+max-nested-blocks=5
+
+
+[SIMILARITIES]
+
+# Minimum lines number of a similarity.
+min-similarity-lines=4
+
+# Ignore comments when computing similarities.
+ignore-comments=yes
+
+# Ignore docstrings when computing similarities.
+ignore-docstrings=yes
+
+# Ignore imports when computing similarities.
+ignore-imports=no
+
+
+[LOGGING]
+
+# Logging modules to check that the string format arguments are in logging
+# function parameter format
+logging-modules=logging
+
+
+[VARIABLES]
+
+# Tells whether we should check for unused import in __init__ files.
+init-import=no
+
+# A regular expression matching the name of dummy variables (i.e. expectedly
+# not used).
+dummy-variables-rgx=_+$|(_[a-zA-Z0-9_]*[a-zA-Z0-9]+?$)|dummy|^ignored_|^unused_
+
+# List of additional names supposed to be defined in builtins. Remember that
+# you should avoid to define new builtins when possible.
+additional-builtins=
+
+# List of strings which can identify a callback function by name. A callback
+# name must start or end with one of those strings.
+callbacks=cb_,_cb
+
+
+[CLASSES]
+
+# List of method names used to declare (i.e. assign) instance attributes.
+defining-attr-methods=__init__,__new__,setUp,__post_init__
+
+# List of valid names for the first argument in a class method.
+valid-classmethod-first-arg=cls
+
+# List of valid names for the first argument in a metaclass class method.
+valid-metaclass-classmethod-first-arg=cls
+
+# List of member names, which should be excluded from the protected access
+# warning.
+exclude-protected=_asdict,_fields,_replace,_source,_make
+
+
+[IMPORTS]
+
+# Deprecated modules which should not be used, separated by a comma
+deprecated-modules=optparse,tkinter.tix
+
+# Create a graph of every (i.e. internal and external) dependencies in the
+# given file (report RP0402 must not be disabled)
+import-graph=
+
+# Create a graph of external dependencies in the given file (report RP0402 must
+# not be disabled)
+ext-import-graph=
+
+# Create a graph of internal dependencies in the given file (report RP0402 must
+# not be disabled)
+int-import-graph=
+
+
+[DESIGN]
+
+# Maximum number of arguments for function / method
+max-args=8
+
+# Argument names that match this expression will be ignored. Default to name
+# with leading underscore
+ignored-argument-names=_.*|^ignored_|^unused_
+
+# Maximum number of locals for function / method body
+max-locals=15
+
+# Maximum number of return / yield for function / method body
+max-returns=6
+
+# Maximum number of branch for function / method body
+max-branches=12
+
+# Maximum number of statements in function / method body
+max-statements=50
+
+# Maximum number of parents for a class (see R0901).
+max-parents=7
+
+# Maximum number of attributes for a class (see R0902).
+max-attributes=7
+
+# Minimum number of public methods for a class (see R0903).
+min-public-methods=2
+
+# Maximum number of public methods for a class (see R0904).
+max-public-methods=20
+
+# Maximum number of boolean expressions in a if statement
+max-bool-expr=5
+
+
+[EXCEPTIONS]
+
+# Exceptions that will emit a warning when being caught. Defaults to
+# "Exception"
+overgeneral-exceptions=BaseException,Exception
diff --git a/build/commands/lib/config.js b/build/commands/lib/config.js
index b411af47ce2..716d59f3ae8 100755
--- a/build/commands/lib/config.js
+++ b/build/commands/lib/config.js
@@ -739,6 +739,8 @@ Config.prototype.getCachePath = function () {
 Object.defineProperty(Config.prototype, 'defaultOptions', {
   get: function () {
     let env = Object.assign({}, process.env)
+    env = this.addPathToEnv(env, path.join(this.depotToolsDir, 'python3-bin'), true)
+    env = this.addPathToEnv(env, path.join(this.depotToolsDir, 'python2-bin'), true)
     env = this.addPathToEnv(env, this.depotToolsDir, true)
     env = this.addPythonPathToEnv(env, path.join(this.srcDir, 'brave', 'chromium_src', 'python_modules'))
     env = this.addPythonPathToEnv(env, path.join(this.srcDir, 'brave', 'script'))
diff --git a/build/commands/lib/pylint.js b/build/commands/lib/pylint.js
new file mode 100644
index 00000000000..f9461aa707a
--- /dev/null
+++ b/build/commands/lib/pylint.js
@@ -0,0 +1,213 @@
+// Copyright (c) 2021 The Brave Authors. All rights reserved.
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// you can obtain one at http://mozilla.org/MPL/2.0/.
+
+const path = require('path')
+const fs = require('fs')
+const config = require('../lib/config')
+const util = require('../lib/util')
+const {EOL} = require('os');
+
+const deleteFile = (path) => {
+  if (fs.existsSync(path)) {
+    try {
+      fs.unlinkSync(path)
+    } catch(err) {
+      console.error('Unable to delete file: ' + path + ' error: ', err)
+      process.exit(1)
+    }
+  }
+}
+
+const ensureDepotToolsInPath = (options) => {
+  const depotToolsPath = path.resolve(__dirname, '../../../vendor/depot_tools')
+  if (!fs.existsSync(depotToolsPath)) {
+    console.warn('Depot Tools path [' + depotToolsPath + '] doesn\'t exist')
+    return
+  }
+  let newPath = options.env.path
+  if (!newPath) {
+    process.env.Path && (newPath = process.env.Path)
+    process.env.PATH && (newPath = process.env.PATH)
+  }
+  newPath = newPath.split(path.delimiter)
+  if (!newPath.includes(depotToolsPath)) {
+    console.info('Prepending [' + depotToolsPath + '] to the path')
+    newPath.unshift(depotToolsPath)
+  }
+  options.env.path = newPath.join(path.delimiter)
+}
+
+const getDefaultOptions = () => {
+  let options = Object.assign({}, config.defaultOptions)
+  options.cwd = path.resolve(__dirname, '../../..')
+  ensureDepotToolsInPath(options)
+  return options
+}
+
+const getPylintInfo = () => {
+  const cmd_options = getDefaultOptions()
+  // Use runProcess here because `which` fails silently (so `run` would not
+  // print anything) and we want to show the error.
+  const prog = util.runProcess(process.platform !== 'win32' ? 'which' : 'where',
+    ['pylint'], cmd_options)
+  if (prog.status !== 0) {
+    console.error('pylint could not be found in path')
+    process.exit(1)
+  }
+
+  // Get pylint version, and parse it to get the associated python version so
+  // that we know which pylintrc config file to use. Can't seem to get this via
+  // stdout so ended up redirecting to a file and then reading from it.
+  const pylintVersionFile = 'pylint-version.txt'
+  deleteFile(pylintVersionFile)
+  util.run('pylint', ['--version', '>' + pylintVersionFile], cmd_options)
+  let data
+  try {
+    data = fs.readFileSync(pylintVersionFile, 'utf8');
+  } catch(err) {
+    console.error('Unable to read file: ' + pylintVersionFile + 'error: ', err);
+    process.exit(1)
+  }
+  deleteFile(pylintVersionFile)
+  console.log(data)
+  const python = 'Python '
+  return data.substr(data.indexOf(python) + python.length, 1)
+}
+
+const runPylint = (args, continueOnFail = true) => {
+  let cmd_options = getDefaultOptions()
+  cmd_options.continueOnFail = continueOnFail
+  const prog = util.run('pylint', args, cmd_options)
+  return (prog.status === 0)
+}
+
+const runGit = (gitArgs) => {
+  // Have to use shell because otherwise git gets confused with node's escaping
+  // of the args.
+  let prog = util.run('git', gitArgs, { shell: true })
+  const output = prog.stdout.toString()
+  console.log(output)
+  return output.trim()
+}
+
+const formatFolders = (folders, sep = '/*.py') => {
+  return folders.join(sep + ' ') + sep
+}
+
+const createEmptyReportFile = (path) => {
+  try {
+    fs.writeFileSync(path, EOL)
+  } catch(err) {
+    console.error('Unable to write to file: ' + path + ' error: ', err)
+    process.exit(1)
+  }
+}
+
+const getAllFiles = (check_folders) => {
+  const files = runGit(['ls-files', '--', formatFolders(check_folders)])
+  if (!files) {
+    return []
+  }
+  return files.split('\n')
+}
+
+const getChangedFiles = (base_branch, check_folders) => {
+  if (!base_branch) {
+    return getAllFiles(check_folders)
+  }
+
+  const merge_base = runGit(['merge-base', 'origin/' + base_branch, 'HEAD'])
+  if (!merge_base) {
+    console.error('Could not determine merge-base for branch ' + base_branch)
+    process.exit(1)
+  }
+  const changed_files = runGit(['diff', '--name-only', '--diff-filter', 'drt',
+    merge_base, '--', formatFolders(check_folders)])
+  if (!changed_files) {
+    return []
+  }
+  return changed_files.split('\n')
+}
+
+const getDescription = (base, check_folders) => {
+  let description = 'pylint findings'
+  if (base) {
+    description += ' in scripts changed relative to ' + base
+  }
+  description += ' in: ' + formatFolders(check_folders, '/')
+  return description
+}
+
+const pylint = (options = {}) => {
+  const check_folders = ['build', 'components', 'installer', 'script', 'tools']
+  const report_file = 'pylint-report.txt'
+
+  const description = getDescription(options.base, check_folders)
+
+  // Print out which pylint is going to be used and its version
+  const python_version = getPylintInfo()
+
+  // Get changed or all python files
+  const paths = getChangedFiles(options.base, check_folders)
+  if (!paths.length) {
+    console.log('No ' + description)
+    if (options.report) {
+      createEmptyReportFile(report_file)
+    }
+    return
+  }
+
+  // Prepare pylint args
+  const rcfile = python_version === '2' ? '.pylint2rc' : '.pylintrc' 
+  let args = ['-j0', '-rn', '--rcfile=' + rcfile]
+  if (options.report) {
+    args.push('-fparseable')
+  }
+
+  // On Windows, command line limit is 8192 chars, so may have to make multiple
+  // calls to pylint. If that happens we will be adding to the same report file,
+  // so make sure the file is clean. Leave some slack for initial args and
+  // report file redirect
+  const maxCmdLineLength = 8000
+  if (options.report) {
+    deleteFile(report_file)
+  } 
+
+  console.log('Checking for ' + description)
+
+  // Convenience funcion
+  const doPylint = (loop_args) => {
+    if (options.report) {
+      loop_args.push('>>' + report_file)
+    }
+    return runPylint(loop_args)
+  }
+
+  let result = true
+  let currentLen = 0
+  let loop_args = [...args]
+  // Run pylint for each max command line length
+  for (const pyPath of paths) {
+    if (currentLen + pyPath.length > maxCmdLineLength) {
+      result &= doPylint(loop_args)
+      currentLen = 0
+      loop_args = [...args]
+    } 
+    loop_args.push(pyPath)
+    currentLen += pyPath.length
+  }
+
+  if (currentLen > 0) {
+    result &= doPylint(loop_args) 
+  }
+
+  // When the report option is present we don't want to exit with an error so
+  // that CI can continue and parse the report
+  if (!result && !options.report) {
+    process.exit(1)
+  }
+}
+
+module.exports = pylint
diff --git a/build/commands/scripts/commands.js b/build/commands/scripts/commands.js
index 90df7dbe4b2..e3e8cb903e1 100755
--- a/build/commands/scripts/commands.js
+++ b/build/commands/scripts/commands.js
@@ -19,6 +19,7 @@ const l10nDeleteTranslations = require('../lib/l10nDeleteTranslations')
 const createDist = require('../lib/createDist')
 const test = require('../lib/test')
 const gnCheck = require('../lib/gnCheck')
+const pylint = require('../lib/pylint')
 
 const collect = (value, accumulator) => {
   accumulator.push(value)
@@ -239,6 +240,12 @@ program
   .option('--base <base branch>', 'set the destination branch for the PR')
   .action(util.lint)
 
+program
+  .command('pylint')
+  .option('--base <base_branch>', 'only analyse files changed relative to base_branch')
+  .option('--report', 'produce a parseable report file')
+  .action(pylint)
+
 program
   .command('format')
   .option('--full', 'format all lines in changed files instead of only the changed lines')
diff --git a/package.json b/package.json
index f375f6fed2f..e1b64f08645 100644
--- a/package.json
+++ b/package.json
@@ -30,9 +30,7 @@
     "test-security": "npm run check_security && npm run audit_deps && node ./build/commands/scripts/commands.js start --enable_brave_update --network_log --user_data_dir_name=brave-network-test",
     "tslint": "tslint --project tsconfig-lint.json \"components/**/*.{ts,tsx}\"",
     "pep8": "pycodestyle --max-line-length 120 -r script",
-    "pylint": "./script/pylint.sh",
-    "pylint:help": "./script/pylint.sh --help",
-    "pylint:report": "./script/pylint.sh --report",
+    "pylint": "node ./build/commands/scripts/commands.js pylint",
     "web-ui-gen-grd": "node components/webpack/gen-webpack-grd",
     "web-ui": "webpack --config components/webpack/webpack.config.js --progress --colors",
     "build-storybook": "build-storybook -c .storybook -o .storybook-out",
diff --git a/script/pylint.sh b/script/pylint.sh
deleted file mode 100755
index 2b1fc6b92e3..00000000000
--- a/script/pylint.sh
+++ /dev/null
@@ -1,102 +0,0 @@
-#!/usr/bin/env bash
-# Requirements: bash, coreutils, git, pylint.
-# The python3 version of pylint should be used (`pip3 install pylint').
-# This is called via `npm run pylint' with the top of the brave-core repo as $PWD.
-
-# Fail on any error.
-shopt -s inherit_errexit
-set -eEo pipefail
-
-# Defaults. Overwritten in parse_cmdline() and set readonly.
-base_branch=""
-check_folders=(build components installer script tools)
-pylint_options=(-j0 -rn --rcfile=.pylintrc)
-report=0
-report_file=pylint-report.txt
-
-# Print a help message and exit with 1 by default.
-# $@ := [ exit_status ]
-help() {
-	cat <<-EOF
-	USAGE: pylint.sh --help
-	       pylint.sh [--compare-with <base_branch>] [--report]
-
-	Run pylint on versioned python scripts in:
-	${check_folders[*]/%/\/}
-
-	--compare-with <base_branch>: only analyse files changed relative to base_branch
-	--report: produce a parseable report file
-	
-	The .pylintrc file at the top of this repo defines pylint options.
-	
-	This script should be called via \`npm run', e.g.:
-	npm run pylint
-	npm run pylint -- --compare-with master
-	EOF
-	exit "${1:-1}"
-}
-
-# Print an error message, followed by the help message and exit.
-# $@ := message
-error() { printf "%s\n\n" "ERROR: $*" >&2; help; }
-
-# Parse command line arguments.
-# $@ := script_arguments
-parse_cmdline() {
-    for ((i=1; i <= $#; ++i)); do
-        case "${@:$i:1}" in
-            --compare-with)
-                ((++i <= $#)) || error "The --compare-with option requires an argument";
-                base_branch="${*:$i:1}"
-                git merge-base "origin/${base_branch:?}" HEAD >/dev/null \
-                    || error "Invalid base_branch";;
-            --report) report=1;;
-            --help) help 0;;
-            *) error "Invalid arguments passed: ${*:$i}";;
-        esac
-    done
-    readonly base_branch check_folders pylint_options report report_file
-}
-
-# Print a tab-delimited list of python scripts changed relative to $base_branch.
-# $@ := ""
-get_changed_files() {
-    git diff --name-only --diff-filter drt \
-        "$(git merge-base "origin/${base_branch:?}" HEAD)" -- \
-        "${check_folders[@]/%/\/\*.py}"|tr '\n' '\t'
-}
-
-# Execute pylint (if necessary) and print info messages.
-# $@ := description files_to_check
-check() {
-    local description="${1:?} in: ${check_folders[*]/%/\/}"
-    local -a check_files=("${@:2}")
-
-    if (("${#check_files[@]}" > 0)); then
-        echo "Checking for $description" >&2
-        case "${report:?}" in
-           1) exec pylint "${pylint_options[@]}" -fparseable --exit-zero \
-               "${check_files[@]}" >"${report_file:?}";;
-           *) exec pylint "${pylint_options[@]}" "${check_files[@]}";;
-        esac
-    else
-        echo "No $description" >&2
-        [[ "$report" == 0 ]] || echo >"$report_file"
-    fi
-}
-
-# $@ := script_arguments
-main() {
-    local -a check_files
-
-    parse_cmdline "$@"
-
-    case "$base_branch" in
-        "") check "pylint findings" "${check_folders[@]}";;
-        *)  read -ra check_files <<<"$(get_changed_files)"
-            check "pylint findings in scripts changed relative to $base_branch" \
-                  "${check_files[@]}";;
-    esac
-}
-
-main "$@"