diff --git a/bin/obmc_ser_num b/bin/obmc_ser_num
index 9f207b1..8d86099 100755
--- a/bin/obmc_ser_num
+++ b/bin/obmc_ser_num
@@ -4,14 +4,14 @@
 This program will get the system serial number from an OBMC machine and print it to stdout.
 """
 
-import os
-import sys
-
-import requests
 from gen_arg import *
 from gen_print import *
 from gen_valid import *
 
+import sys
+import os
+import requests
+
 save_path_0 = sys.path[0]
 del sys.path[0]
 
@@ -21,35 +21,33 @@
 logging.captureWarnings(True)
 
 parser = argparse.ArgumentParser(
-    usage="%(prog)s [OPTIONS]",
+    usage='%(prog)s [OPTIONS]',
     description="%(prog)s will get the system serial number from an OBMC"
     + " machine and print it to stdout as follows:\n\n"
     + "mch_ser_num:<ser num>",
     formatter_class=argparse.ArgumentDefaultsHelpFormatter,
-    prefix_chars="-+",
-)
+    prefix_chars='-+')
 
 parser.add_argument(
-    "--openbmc_username",
+    '--openbmc_username',
     default="root",
-    help="The username for communicating with the OpenBMC machine.",
-)
+    help='The username for communicating with the OpenBMC machine.')
 
 parser.add_argument(
-    "--openbmc_password",
+    '--openbmc_password',
     default="0penBmc",
-    help="The password for communicating with the OpenBMC machine.",
-)
+    help='The password for communicating with the OpenBMC machine.')
 
 parser.add_argument(
-    "openbmc_host", help="The host name or IP address of the OpenBMC machine."
-)
+    'openbmc_host',
+    help='The host name or IP address of the OpenBMC machine.')
 
 # Populate stock_list with options we want.
 stock_list = [("test_mode", 0), ("quiet", 1)]
 
 
-def exit_function(signal_number=0, frame=None):
+def exit_function(signal_number=0,
+                  frame=None):
     r"""
     Execute whenever the program ends normally or with the signals that we catch (i.e. TERM, INT).
     """
@@ -60,7 +58,8 @@
     qprint_pgm_footer()
 
 
-def signal_handler(signal_number, frame):
+def signal_handler(signal_number,
+                   frame):
     r"""
     Handle signals.  Without a function to catch a SIGTERM or SIGINT, our program would terminate immediately
     with return code 143 and without calling our exit_function.
@@ -97,6 +96,7 @@
 
 
 def main():
+
     if not gen_get_options(parser, stock_list):
         return False
 
@@ -109,14 +109,12 @@
 
     http_prefix = create_http_prefix(openbmc_host)
 
-    command = http_prefix + "login"
+    command = http_prefix + 'login'
     qprint_issuing(command)
-    resp = session.post(
-        command,
-        json={"data": [openbmc_username, openbmc_password]},
-        verify=False,
-    )
-    if resp.json()["status"] != "ok":
+    resp = session.post(command,
+                        json={'data': [openbmc_username, openbmc_password]},
+                        verify=False)
+    if resp.json()['status'] != 'ok':
         json = resp.json()
         print_error_report("http request failed:\n" + sprint_var(command))
         raise Exception("Login failed.\n")
@@ -125,18 +123,15 @@
     qprint_issuing(command)
     resp = session.get(command, verify=False)
     json = resp.json()
-    if json["status"] != "ok":
+    if json['status'] != 'ok':
         print_error_report("http request failed:\n" + sprint_var(command))
         raise Exception("http request failed.\n")
 
     try:
-        mch_ser_num = json["data"]["SerialNumber"]
+        mch_ser_num = json['data']['SerialNumber']
     except KeyError:
-        print_error_report(
-            "Failed to find 'SerialNumber' key in the"
-            + " following data:\n"
-            + sprint_var(json)
-        )
+        print_error_report("Failed to find 'SerialNumber' key in the"
+                           + " following data:\n" + sprint_var(json))
         return False
     print_var(mch_ser_num, 0, 0, 0)