Q.Write the output of the following Python code: for i in range(2,7,2): print(i * '$')

The core concept here is the Python range() function's behaviour and how string multiplication works inside a loop. …

The core of this problem lies in understanding two fundamental Python concepts: how the range() function generates sequences of numbers and how string multiplication works.

The range() function is commonly used to produce a sequence of integers, which is particularly useful for controlling for loops. When used as range(start, stop, step), it generates numbers starting from start, incrementing by step each time, and continues up to, but not including, the stop value. The stop value is always exclusive.

String multiplication in Python is straightforward: when you multiply a string by an integer (e.g., string * integer), the string is repeated integer times. For instance, 'abc' * 2 results in 'abcabc'.

Let's trace the execution step by step.

1. Analyze range(2, 7, 2):

   • The start value is 2.
   • The stop value is 7 (exclusive).
   • The step value is 2.
   • The sequence of numbers generated by range(2, 7, 2) will be:
     • Start at 2.
     • Add the step (2): $2 + 2 = 4$.
     • Add the step (2): $4 + 2 = 6$.
     • Add the step (2): $6 + 2 = 8$. Since 8 is not less than the stop value of 7, this number is not included in the sequence.
   • Therefore, the for loop will iterate with i taking the values 2, 4, and 6.

2. First Iteration: i = 2:

   • The code inside the loop is print(i * '$').
   • Substituting i with 2, we get print(2 * '$').
   • String multiplication 2 * '$' repeats the $ character two times, resulting in the string '$$'. * The print() function outputs this string, followed by a newline character. * Output so far: ``` $$

3. Second Iteration: i = 4:

   • The code is print(i * '$'). …