Cara menggunakan one line calculator python

Python Basic: Exercise-66 with Solution

Write a Python program to calculate body mass index.

Pictorial Presentation:

Sample Solution:-

Python Code:

height = float(input("Input your height in Feet: "))
weight = float(input("Input your weight in Kilogram: "))
print("Your body mass index is: ", round(weight / (height * height), 2))

Sample Output:

Input your height in Feet:  6
Input your weight in Kilogram:  65
Your body mass index is:  1.81

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In this article, we will see how to create a countdown timer using Python. The code will take input from the user regarding the length of the countdown in seconds. After that, a countdown will begin on the screen of the format ‘minutes: seconds’. We will use the time module here.

Approach

In this project, we will be using the time module and its sleep() function. Follow the below steps to create a countdown timer:

• Step 1: Import the time module.
• Step 2: Then ask the user to input the length of the countdown in seconds.
• Step 3: This value is sent as a parameter ‘t’ to the user-defined function countdown(). Any variable read using the input function is a string. So, convert this parameter to ‘int’ as it is of string type.
• Step 4: In this function, a while loop runs until time becomes 0.
• Step 5: Use divmod() to calculate the number of minutes and seconds. You can read more about it here.
• Step 6: Now print the minutes and seconds on the screen using the variable timeformat.
• Step 7: Using end = ‘\r’ we force the cursor to go back to the start of the screen (carriage return) so that the next line printed will overwrite the previous one.
• Step 8: The time.sleep()is used to make the code wait for one sec.
• Step 9: Now decrement time so that the while loop can converge.
• Step 10: After the completion of the loop, we will print “Fire in the hole” to signify the end of the countdown.

Below is the implementation of the above approach

Python3

import time

def countdown(t):

    while t:

        mins, secs = divmod(t, 60)

        timer = '{:02d}:{:02d}'.format(mins, secs)

        print(timer, end="\r")

        time.sleep(1)

        t -= 1

    print('Fire in the hole!!')

t = input("Enter the time in seconds: ")

countdown(int(t))

Output: 
 

https://media.geeksforgeeks.org/wp-content/cdn-uploads/20200729151851/python-countdown-timer.webm