Merge pull request #16 from yxd-hde/i-15

Update help messages

Author: yxd-hde

README.md

@@ -28,26 +28,28 @@ Run `python-lambda-local -h` to see the help.
 ```
 usage: python-lambda-local [-h] [-l LIBRARY_PATH] [-f HANDLER_FUNCTION]
                            [-t TIMEOUT] [-a ARN_STRING] [-v VERSION_NAME]
+                           [--version]
                            FILE EVENT
 
 Run AWS Lambda function written in Python on local machine.
 
 positional arguments:
-  FILE                  Lambda function file name
-  EVENT                 Event data file name.
+  FILE                  lambda function file name
+  EVENT                 event data file name
 
 optional arguments:
   -h, --help            show this help message and exit
   -l LIBRARY_PATH, --library LIBRARY_PATH
-                        Path of 3rd party libraries.
+                        path of 3rd party libraries
   -f HANDLER_FUNCTION, --function HANDLER_FUNCTION
-                        Lambda function handler name. Default: "handler".
+                        lambda function handler name, default: "handler"
   -t TIMEOUT, --timeout TIMEOUT
-                        Seconds until lambda function timeout. Default: 3
+                        seconds until lambda function timeout, default: 3
   -a ARN_STRING, --arn-string ARN_STRING
-                        arn string for function
+                        ARN string for lambda function
   -v VERSION_NAME, --version-name VERSION_NAME
-                        function version name
+                        lambda function version name
+  --version             print the version of python-lambda-local and exit
 ```
 
 ### Prepare development directory

README.rst

@@ -33,26 +33,28 @@ Run ``python-lambda-local -h`` to see the help.
 
     usage: python-lambda-local [-h] [-l LIBRARY_PATH] [-f HANDLER_FUNCTION]
                                [-t TIMEOUT] [-a ARN_STRING] [-v VERSION_NAME]
+                               [--version]
                                FILE EVENT
 
     Run AWS Lambda function written in Python on local machine.
 
     positional arguments:
-      FILE                  Lambda function file name
-      EVENT                 Event data file name.
+      FILE                  lambda function file name
+      EVENT                 event data file name
 
     optional arguments:
       -h, --help            show this help message and exit
       -l LIBRARY_PATH, --library LIBRARY_PATH
-                            Path of 3rd party libraries.
+                            path of 3rd party libraries
       -f HANDLER_FUNCTION, --function HANDLER_FUNCTION
-                            Lambda function handler name. Default: "handler".
+                            lambda function handler name, default: "handler"
       -t TIMEOUT, --timeout TIMEOUT
-                            Seconds until lambda function timeout. Default: 3
+                            seconds until lambda function timeout, default: 3
       -a ARN_STRING, --arn-string ARN_STRING
-                            arn string for function
+                            ARN string for lambda function
       -v VERSION_NAME, --version-name VERSION_NAME
-                            function version name
+                            lambda function version name
+      --version             print the version of python-lambda-local and exit
 
 Prepare development directory
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

lambda_local/__init__.py

@@ -9,10 +9,14 @@
 import argparse
 import sys
 from multiprocessing import Process
+import pkg_resources
 
 from .main import run
 
 
+__version__ = pkg_resources.require("python-lambda-local")[0].version
+
+
 def main():
     args = parse_args()
 
@@ -27,23 +31,28 @@ def parse_args():
     parser = argparse.ArgumentParser(description="Run AWS Lambda function" +
                                      " written in Python on local machine.")
     parser.add_argument("file", metavar="FILE", type=str,
-                        help="Lambda function file name")
+                        help="lambda function file name")
     parser.add_argument("event", metavar="EVENT", type=str,
-                        help="Event data file name.")
+                        help="event data file name")
     parser.add_argument("-l", "--library", metavar="LIBRARY_PATH",
-                        type=str, help="Path of 3rd party libraries.")
+                        type=str, help="path of 3rd party libraries")
     parser.add_argument("-f", "--function", metavar="HANDLER_FUNCTION",
                         type=str, default="handler",
-                        help="Lambda function handler name. \
-Default: \"handler\".")
+                        help="lambda function handler name, \
+default: \"handler\"")
     parser.add_argument("-t", "--timeout", metavar="TIMEOUT", type=int,
                         default=3,
-                        help="Seconds until lambda function timeout. \
-Default: 3")
+                        help="seconds until lambda function timeout, \
+default: 3")
     parser.add_argument("-a", "--arn-string", metavar="ARN_STRING", type=str,
-                        default="", help="arn string for function")
+                        default="", help="ARN string for lambda function")
     parser.add_argument("-v", "--version-name", metavar="VERSION_NAME",
-                        type=str, default="", help="function version name")
+                        type=str, default="",
+                        help="lambda function version name")
+
+    parser.add_argument("--version", action="version",
+                        version="%(prog)s " + __version__,
+                        help="print the version of python-lambda-local and exit")
 
     return parser.parse_args()