DateTime modules use

Author: BASNETANAMIKA

Self_Practice_Modules/1ParseDatesFromLogs.py

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+from datetime import datetime
+import os
+import urllib.request
+import re
+
+SHUTDOWN_EVENT = 'Shutdown initiated'
+
+# prep: read in the logfile
+print("cwd is {0}".format(os.getcwd()))
+logfile = os.path.join(os.getcwd(), '1LogFile.log')
+
+with open(logfile) as f:
+    loglines = f.readlines()
+
+
+# for you to code:
+
+def convert_to_datetime(line):
+    """TODO 1:
+       Extract timestamp from logline and convert it to a datetime object.
+       For example calling the function with:
+       INFO 2014-07-03T23:27:51 supybot Shutdown complete.
+       returns:
+       datetime(2014, 7, 3, 23, 27, 51)
+    """
+    print (line)
+    time_regex = re.compile(r'(\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2})')
+    mo = re.search(time_regex, line)
+    date_string = ''
+    datetime_obj = ''
+    if mo:
+        date_string = mo.group()
+
+    print (date_string)
+    if date_string:
+        time = date_string.replace("T"," ")
+        print ("The time in string format is {0}".format(time))
+        datetime_obj = datetime.strptime(time,"%Y-%m-%d %H:%M:%S")
+    print (datetime_obj)
+    return datetime_obj
+
+def time_between_shutdowns(loglines):
+    """TODO 2:
+       Extract shutdown events ("Shutdown initiated") from loglines and
+       calculate the timedelta between the first and last one.
+       Return this datetime.timedelta object.
+    """
+    shutdown_regex = re.compile(r'supybot Shutdown initiated.$')
+    logs_list = []
+    for line in loglines:
+        mo = re.search(shutdown_regex, line)
+        if mo:
+            logline = mo.group()
+            logs_list.append(line)
+    print ("logs_list is {0}".format(logs_list))
+    datetime_obj1 = convert_to_datetime(logs_list[0])
+    datetime_obj2 = convert_to_datetime(logs_list[-1])
+    time_diff = (datetime_obj2 - datetime_obj1)
+    print("time_diff is {0}".format(time_diff))
+
+
+if __name__=="__main__":
+    time_between_shutdowns(loglines)
+

Self_Practice_Modules/1Timer.py

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+from datetime import timedelta, datetime
+import time
+
+timer = input("enter time is seconds for timer: ")
+time_interval = datetime.strptime(timer, "%S").second
+# print ("start_time_str is {0}".format(time_interval))
+delta = timedelta(seconds=time_interval)
+
+start = input("Press enter to start timer ")
+start_time = datetime.today()
+print("the start time is [{0}]".format(start_time))
+
+end_time = start_time + delta
+print("the end_time is [{0}]".format(end_time))
+
+while True:
+    # print(datetime.today())
+    if datetime.today() >= end_time:
+        print("your time is up - {0} seconds and the time is [{1}]".format(time_interval, time.ctime()))
+        break

Self_Practice_Modules/Readme.md

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+#Problem statement #
+
+Create a timer app/function. Use time of course but also throw in the timestamps and even some basic calculations on the difference between the start and end timestamps.
+
+It takes the time is seconds for which the timer is to be set as input from the user.
+
+Asks user to press ENTER separately when he wishes to start the timer.
+
+#Output of 1Timer.py #
+
+`enter time is seconds for timer: 6`
+
+`Press enter to start timer`
+
+`the start time is [2019-09-21 12:38:49.559176]`
+
+`the end_time is [2019-09-21 12:38:55.559176]`
+
+`your time is up - 6 seconds and the time is [Sat Sep 21 12:38:55 2019]`