dev-cmd: add update-python-resources command

Library/Homebrew/dev-cmd/update-python-resources.rb

@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+require "cli/parser"
+require "utils/pypi"
+
+module Homebrew
+  module_function
+
+  def update_python_resources_args
+    Homebrew::CLI::Parser.new do
+      usage_banner <<~EOS
+        `update-python-resources` [<options>] <formula>
+
+        Update versions for PyPI resource blocks in <formula>.
+      EOS
+      switch "-p", "--print-only",
+             description: "Print the updated resource blocks instead of changing <formula>."
+      switch "-s", "--silent",
+             description: "Suppress any output."
+      switch "--ignore-non-pypi-packages",
+             description: "Don't fail if <formula> is not a PyPI package."
+      flag "--version=",
+           description: "Use the specified <version> when finding resources for <formula>. "\
+                        "If no version is specified, the current version for <formula> will be used."
+      min_named :formula
+    end
+  end
+
+  def update_python_resources
+    args = update_python_resources_args.parse
+
+    args.formulae.each do |formula|
+      PyPI.update_python_resources! formula, args.version, print_only: args.print_only?, silent: args.silent?,
+                                    ignore_non_pypi_packages: args.ignore_non_pypi_packages?
+    end
+  end
+end