Add 'remove' command as an alias to 'uninstall'

Author: McSinyx

news/8130.feature

@@ -0,0 +1,2 @@
+Add aliases 'add' and 'remove' aliases for 'install' and 'uninstall',
+respectively.

src/pip/_internal/cli/main_parser.py

@@ -9,7 +9,12 @@
     ConfigOptionParser,
     UpdatingDefaultsHelpFormatter,
 )
-from pip._internal.commands import commands_dict, get_similar_commands
+from pip._internal.commands import (
+    aliases_dict,
+    aliases_of_commands,
+    commands_dict,
+    get_similar_commands,
+)
 from pip._internal.exceptions import CommandError
 from pip._internal.utils.misc import get_pip_version, get_prog
 from pip._internal.utils.typing import MYPY_CHECK_RUNNING
@@ -47,10 +52,10 @@ def create_main_parser():
     parser.main = True  # type: ignore
 
     # create command listing for description
-    description = [''] + [
-        '{name:27} {command_info.summary}'.format(**locals())
-        for name, command_info in commands_dict.items()
-    ]
+    description = ['']
+    for name, info in commands_dict.items():
+        names = ', '.join(aliases_of_commands[name])
+        description.append('{:27} {.summary}'.format(names, info))
     parser.description = '\n'.join(description)
 
     return parser
@@ -81,9 +86,11 @@ def parse_command(args):
         sys.exit()
 
     # the subcommand name
-    cmd_name = args_else[0]
+    cmd_alias = cmd_name = args_else[0]
 
-    if cmd_name not in commands_dict:
+    if cmd_alias in aliases_dict:
+        cmd_name = aliases_dict[cmd_alias]
+    elif cmd_name not in commands_dict:
         guess = get_similar_commands(cmd_name)
 
         msg = ['unknown command "{}"'.format(cmd_name)]
@@ -94,6 +101,6 @@ def parse_command(args):
 
     # all the args without the subcommand
     cmd_args = args[:]
-    cmd_args.remove(cmd_name)
+    cmd_args.remove(cmd_alias)
 
-    return cmd_name, cmd_args
+    return cmd_alias, cmd_args

src/pip/_internal/commands/__init__.py

@@ -17,7 +17,7 @@
 from pip._internal.utils.typing import MYPY_CHECK_RUNNING
 
 if MYPY_CHECK_RUNNING:
-    from typing import Any
+    from typing import Any, Dict, List
     from pip._internal.cli.base_command import Command
 
 
@@ -94,13 +94,26 @@
     )),
 ])  # type: OrderedDict[str, CommandInfo]
 
+aliases_dict = {
+    'add': 'install',
+    'remove': 'uninstall',
+}  # type: Dict[str, str]
+
+aliases_of_commands = {
+    name: [name] for name in commands_dict}  # type: Dict[str, List[str]]
+for alias, name in aliases_dict.items():
+    aliases_of_commands[name].append(alias)
+
 
 def create_command(name, **kwargs):
     # type: (str, **Any) -> Command
     """
     Create an instance of the Command class with the given name.
     """
-    module_path, class_name, summary = commands_dict[name]
+    try:
+        module_path, class_name, summary = commands_dict[name]
+    except KeyError:
+        module_path, class_name, summary = commands_dict[aliases_dict[name]]
     module = importlib.import_module(module_path)
     command_class = getattr(module, class_name)
     command = command_class(name=name, summary=summary, **kwargs)
@@ -114,7 +127,8 @@ def get_similar_commands(name):
 
     name = name.lower()
 
-    close_commands = get_close_matches(name, commands_dict.keys())
+    commands = {c for a in aliases_of_commands.values() for c in a}
+    close_commands = get_close_matches(name, commands)
 
     if close_commands:
         return close_commands[0]