Minor edits to python script and Readme

Author: Aniket Mokashi

bigquery/README.md

@@ -1,4 +1,4 @@
-Download Google Cloud CLI and configure your project settings:
+Download Google Cloud CLI and configure your project settings. You can skip this step if you are using [Cloud shell](https://docs.cloud.google.com/shell/docs/launching-cloud-shell):
 ```
 wget --continue --progress=dot:giga https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/google-cloud-cli-linux-x86_64.tar.gz
 tar -xf google-cloud-cli-linux-x86_64.tar.gz

bigquery/run_queries.py

@@ -3,6 +3,7 @@
 
 import sys
 from typing import TextIO, Any
+from datetime import datetime
 
 def log(*objects: Any, sep: str = ' ', end: str = '\n', file: TextIO = sys.stderr, severity: str = 'INFO') -> None:
     """
@@ -50,14 +51,18 @@ def log(*objects: Any, sep: str = ' ', end: str = '\n', file: TextIO = sys.stder
   for i in range(TRIES):
     log(f"\n[{i}]: {query}")
     try:
+      client_start_time = datetime.now()
       query_job = client.query(query, job_config=job_config)
       results = query_job.result()
+      client_end_time = datetime.now()
+      
       execution_time = query_job.ended - query_job.started
       total_time = query_job.ended - query_job.created
       total_time_secs = total_time.total_seconds()
       endstr = "],\n" if i == 2 else ","
       print(f"{total_time_secs}", end=endstr)
 
+      client_time = client_end_time - client_start_time 
       log(f"Job ID: **{query_job.job_id}**")
       log(f"Query ID: **{query_job.query_id}**")
       log(f"State: **{query_job.state}**")
@@ -67,6 +72,7 @@ def log(*objects: Any, sep: str = ' ', end: str = '\n', file: TextIO = sys.stder
       log(f"End Time: {query_job.ended}")
       log(f"Execution Time: {execution_time}")
       log(f"Total Time: {total_time}")
+      log(f"Client Time: {client_time}")
       log(f"Total Rows Returned: {results.total_rows}")
 
     except Exception as e: