Merge PR #279 (Use proper default for weightsdir in file_regrid.py )

This merge brings PR #279 (Bug fix: Use proper default value for
weightsdir in file_regrid.py, by @yantosca) into the GCPy 1.4.1
development stream.

This PR fixes an issue (i.e. incorrect type of default variable resulting
in a TypeError) when calling file_regrid.py without specifying a value for
the --weightsdir command line argument.

Signed-off-by: Bob Yantosca <yantosca@seas.harvard.edu>

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to GCPy will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased] - TBD
+### Fixed
+- Now use the proper default value for the `--weightsdir` argument to `gcpy/file_regrid.py`
+
 ## [1.4.0] - 2023-11-20
 ### Added
 - Added C2H2 and C2H4 to `emission_species.yml`

gcpy/file_regrid.py

@@ -1540,7 +1540,7 @@ def main():
         "-w", "--weightsdir",
         metavar="WGT",
         type=str,
-        default=False,
+        default=".",
         help="Directory where regridding weights are found (or will be created)"
     )
     args = parser.parse_args()