Countdown_clock_and_Timer

Countdown_clock_and_Timer/README.md

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+# Countdown Clock and Timer
+## Description
+A simple timer that can be used to track runtime. The purpose of this is to provide a simple, and standard, way of tracking runtime. 
+- This is very useful when testing implementations, and helpful when tracking the progress of longer-running programs. 
+- The app will notify the user that the time has ended.
+
+### Language
+- [X] Python
+
+### Checklist
+Name | About
+:------------------ | :------------------
+Countdown clock and timer | Shows the current time and timer according to the user input.
+
+### Usage
+To access the `timer`, this application imports the following modules.
+```python
+import os
+import time
+```
+
+### Instructions to run this application
+
+  1.  Download and Run the __countdown_clock_and_timer.py__
+  2. Set the countdown time.
+  3. Enter the hours, minutes and seconds .
+  4. Timer will be set according to the given input by the user.
+  5. It will show the countdown time and display it when the time gets over.
+
+##### Example Output
+Output will be shown like that for the three seconds -
+```
+00:00:03
+00:00:02
+00:00:01
+00:00:00
+'Time is over'
+```

Countdown_clock_and_Timer/countdown_clock_and_timer.py

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+# import modules like 'os' and 'time'
+import os
+import time
+
+os.system('clear')
+
+# using ctime() to show present time
+times = time.ctime()     
+print("\nCurrent Time: ",times)
+
+print("\n     Welcome to CountdownTimer!\n\n     Let's set up the countdown timer...\n")
+
+# User input for the timer
+hours = int(input("     How many hours? "))
+minutes = int(input("     How many minutes? "))
+seconds = int(input("     How many seconds? "))
+
+# To display message when the given value is not a number
+if hours or minutes or seconds == "":
+    print("\n Invalid entry. You must enter a number.")
+
+# Conversion of hours amd minutes into seconds
+hrsToSec = (hours * 60) * 60
+mnsToSec = (minutes * 60)
+seconds = seconds
+
+seconds = hrsToSec + mnsToSec + seconds
+print("\n Timer has been set for "+str(seconds) + " seconds.")
+
+# Loop for displaying the timer
+
+for i in range(seconds, -1, -1):
+    displayHours = int(seconds / 3600)
+    displayMinutes = int(seconds / 60)
+    if displayMinutes >= 60:
+        displayMinutes = displayMinutes - (displayHours * 60)
+    else:
+        displayMinutes = displayMinutes
+    displaySeconds = int(seconds % 60)
+    print("\n     Your time remaining is: {}:{}:{}".format(str(displayHours).zfill(2), str(displayMinutes).zfill(2), str(displaySeconds).zfill(2)))
+    seconds -= 1
+    time.sleep(1)   # delays in the excution of a program for 1 second
+
+print("\n Time is over.")
+
+