Question

Predict the output of the below code snippet in python.
for number in 10,15:
for counter in range(1,3):
print(number*counter, end=" ")

Answer 1

Answer:

The output of the given snippet of code in python is found as follows:

>>> 10  20  15  30

Explanation:

For loop:

• A for loop is used to iterate over a sequence (either a list,  tuple,  dictionary,  set, or  string).
• This works like the iterator method found in other object-oriented programming languages, unlike the for keyword in other programming  languages.
• A for loop allows you to execute a sequence of statements once for each element of a list, tuple, set, etc.

range() function:

• To repeat a set of code a specified number of times, you can use the range() function.
• The range() function returns a sequence of numbers starting at 0 by default, incrementing by 1 (by default), and ending with the specified number.

Calculation of output:

• The first loop intakes two values: 10, 15, which are stated in the loop definition.
• The second loop is defined under the first loop and takes 2 values starting from 1 and going till 3-1=2 (n-1) with increment of 1 unit.
• Now, print command is printing the multiplication of the values active under both the loops. In this case, the first loop as well as second loop has two values, making a total of 4 possible outputs.

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Answer 2

Answer:

The output will be 10 20 15 30

Explanation:

Given code is:

for number in 10,15:

   for counter in range(1,3):

           print(number*counter, end=" ")

Let's understand this simple code snippet:

• There are two for loops given in the code.
• The outer loop will run two times because only numbers are given to iterate ie 10,15
• Inner for loop will run two times from 0 to 2(3-1)
• Focus on values of numbers and counter to predict the output
• In the first iteration:
•     number = 10 and counter is (1,2)
•   So 10 x 1= 10 and 10 x 2 =20
• In the second iteration:
• number = 15 and counter is (1,2)
• So 15 x 1 =15 and 15 x 2 = 30
• The final output is 10 20 15 30

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