From 820ad50df8e9525e59e6431a2cd88f727ccbae43 Mon Sep 17 00:00:00 2001
From: Jorge Orpinel <jorge@orpinel.com>
Date: Thu, 27 Jun 2019 18:39:46 -0500
Subject: [PATCH] commands: remove `default=None` from argparse `add_argument`
 calls

Per https://github.com/iterative/dvc/pull/2112#pullrequestreview-255013079
---
 dvc/command/cache.py     | 1 -
 dvc/command/config.py    | 4 +---
 dvc/command/data_sync.py | 6 +-----
 dvc/command/diff.py      | 2 --
 dvc/command/gc.py        | 7 +------
 dvc/command/run.py       | 3 +--
 6 files changed, 4 insertions(+), 19 deletions(-)

diff --git a/dvc/command/cache.py b/dvc/command/cache.py
index 75222a505..8110ad18e 100644
--- a/dvc/command/cache.py
+++ b/dvc/command/cache.py
@@ -57,7 +57,6 @@ def add_parser(subparsers, parent_parser):
     )
     cache_dir_parser.add_argument(
         "value",
-        default=None,
         help="Path to cache directory. Relative paths are resolved relative "
         "to the current directory and saved to config relative to the "
         "config file location.",
diff --git a/dvc/command/config.py b/dvc/command/config.py
index 8e3bdba40..de9f8bd58 100644
--- a/dvc/command/config.py
+++ b/dvc/command/config.py
@@ -74,7 +74,5 @@ def add_parser(subparsers, parent_parser):
         help="Unset option.",
     )
     config_parser.add_argument("name", help="Option name.")
-    config_parser.add_argument(
-        "value", nargs="?", default=None, help="Option value."
-    )
+    config_parser.add_argument("value", nargs="?", help="Option value.")
     config_parser.set_defaults(func=CmdConfig)
diff --git a/dvc/command/data_sync.py b/dvc/command/data_sync.py
index 17bebcb38..91748b102 100644
--- a/dvc/command/data_sync.py
+++ b/dvc/command/data_sync.py
@@ -101,11 +101,7 @@ def shared_parent_parser():
         add_help=False, parents=[get_parent_parser()]
     )
     shared_parent_parser.add_argument(
-        "-j",
-        "--jobs",
-        type=int,
-        default=None,
-        help="Number of jobs to run simultaneously.",
+        "-j", "--jobs", type=int, help="Number of jobs to run simultaneously."
     )
     shared_parent_parser.add_argument(
         "--show-checksums",
diff --git a/dvc/command/diff.py b/dvc/command/diff.py
index b62ef1c29..149d85451 100644
--- a/dvc/command/diff.py
+++ b/dvc/command/diff.py
@@ -144,7 +144,6 @@ def add_parser(subparsers, parent_parser):
     diff_parser.add_argument(
         "-t",
         "--target",
-        default=None,
         help=(
             "Source path to a data file or directory. Default None. "
             "If not specified, compares all files and directories "
@@ -161,6 +160,5 @@ def add_parser(subparsers, parent_parser):
             "diff shows the difference between current HEAD and a_ref"
         ),
         nargs="?",
-        default=None,
     )
     diff_parser.set_defaults(func=CmdDiff)
diff --git a/dvc/command/gc.py b/dvc/command/gc.py
index dc3b191fe..27e756c54 100644
--- a/dvc/command/gc.py
+++ b/dvc/command/gc.py
@@ -94,11 +94,7 @@ def add_parser(subparsers, parent_parser):
         help="Force garbage collection - automatically agree to all prompts.",
     )
     gc_parser.add_argument(
-        "-j",
-        "--jobs",
-        type=int,
-        default=None,
-        help="Number of jobs to run simultaneously.",
+        "-j", "--jobs", type=int, help="Number of jobs to run simultaneously."
     )
     gc_parser.add_argument(
         "-p",
@@ -106,7 +102,6 @@ def add_parser(subparsers, parent_parser):
         dest="repos",
         type=str,
         nargs="*",
-        default=None,
         help="Keep data files required by these projects "
         "in addition to the current one. "
         "Useful if you share a single cache across repos.",
diff --git a/dvc/command/run.py b/dvc/command/run.py
index 6afbc5073..1c3c3f457 100644
--- a/dvc/command/run.py
+++ b/dvc/command/run.py
@@ -130,12 +130,11 @@ def add_parser(subparsers, parent_parser):
         "-f", "--file", help="Specify name of the DVC-file it generates."
     )
     run_parser.add_argument(
-        "-c", "--cwd", default=None, help="Deprecated, use -w and -f instead."
+        "-c", "--cwd", help="Deprecated, use -w and -f instead."
     )
     run_parser.add_argument(
         "-w",
         "--wdir",
-        default=None,
         help="Directory within your repo to run your command in.",
     )
     run_parser.add_argument(