Python Output Questionsपायथन आउटपुट प्रश्न questions and answersप्रश्न और उत्तर

How python output questions worksपायथन आउटपुट प्रश्न को समझिए

Read the program line by line and keep a small table of variable values. Most traps are in what changes a value in place (append, sort, +=) versus what creates a new object.

Slices include the start index and stop just before the stop index. Negative indices count from the end, and a step of -1 reverses.

Default arguments are evaluated once, when the function is defined, so a mutable default keeps changes between calls.

Each trick says when to use it, why it works and when it fails. Formula tricks are checked by code over their whole range.हर ट्रिक बताती है कि उसे कब इस्तेमाल करें, वह क्यों काम करती है और कब नहीं। सूत्र वाली ट्रिक्स को कोड से उनकी पूरी रेंज पर जाँचा गया है।

Answers and full solutions are shown. Hide them to test yourself first.उत्तर और पूरे हल दिखाए गए हैं। पहले खुद को परखने के लिए इन्हें छिपाइए।

1. Example 1उदाहरण 1 · Python Output Questions · Easyआसान

   What is the output of the following program?

   s = '  apple, banana , cherry '
   parts = s.strip().replace(' ', '').split(',')
   print('-'.join(parts))

   1. apple-banana-cherry
   2. apple,banana,cherry
   3. apple banana cherry
   4. apple-banana-cherry-
   Answer:उत्तर: apple-banana-cherry

   1. strip() removes leading/trailing spaces.
   2. replace(' ', '') deletes all internal spaces.
   3. split(',') breaks on commas.
   4. join('-') combines with hyphens.

2. Example 2उदाहरण 2 · Python Output Questions · Mediumमध्यम

   What is the output of the following program?

   a = {1,2,3,4}
   b = {3,4,5,6}
   print(sorted(a & b), sorted(a | b), sorted(a - b))

   1. [3, 4] [1, 2, 3, 4, 5, 6] [1, 2]
   2. [3, 4] [1, 2, 3, 4, 5, 6] [3, 4]
   3. [1, 2] [1, 2, 3, 4, 5, 6] [1, 2]
   4. [3, 4] [3, 4, 5, 6] [1, 2]
   Answer:उत्तर: [3, 4] [1, 2, 3, 4, 5, 6] [1, 2]

   1. Create sets a and b.
   2. Compute intersection (&), union (|), difference (-).
   3. Sort each result for deterministic order.
   4. Print them space separated.

3. Example 3उदाहरण 3 · Python Output Questions · Hardकठिन

   What is the output of the following program?

   nums = [1, 2, 3, 4]
   squares = [x*x for x in nums if x % 2 == 0]
   print(squares)

   1. [4, 16]
   2. [1, 4, 9, 16]
   3. [2, 4]
   4. [4, 9]
   Answer:उत्तर: [4, 16]

   1. Filter keeps even numbers 2 and 4.
   2. Square each: 2*2=4, 4*4=16.
   3. List becomes [4,16].

4. Example 4उदाहरण 4 · Python Output Questions · Mediumमध्यम

   What is the output of the following program?

   a = [1, 2, 3]
   b = a
   b.append(4)
   print(a)

   1. [1, 2, 3, 4]
   2. [1, 2, 3]
   3. [1, 2, 3, 4, 4]
   4. []
   Answer:उत्तर: [1, 2, 3, 4]

   1. b = a makes b refer to same list object
   2. b.append(4) mutates that shared list
   3. print(a) shows the mutated list

5. Example 5उदाहरण 5 · Python Output Questions · Mediumमध्यम

   What is the output of the following program?

   try:
       x = 10 // 0
   except ZeroDivisionError:
       print("caught")
   finally:
       print("done")

   1. caught done
   2. caught
   3. done
   4. ZeroDivisionError
   Answer:उत्तर: caught done

   1. Division by zero raises ZeroDivisionError.
   2. Except block catches it and prints 'caught'.
   3. Finally block always runs and prints 'done'.

6. Example 6उदाहरण 6 · Python Output Questions · Mediumमध्यम

   What is the output of the following program?

   try:
       x = 10 // 0
   except ZeroDivisionError:
       print("Z")
   except Exception:
       print("E")
   finally:
       print("F")

   1. Z F
   2. Z E F
   3. E F
   4. F
   Answer:उत्तर: Z F

   1. 10//0 raises ZeroDivisionError
   2. caught by first except, prints Z
   3. finally prints F
   4. second except never runs

Common mistakesआम गलतियाँ

• Treating b = a as a copy of a list.
• Including the stop index in a slice.
• Forgetting that // rounds down towards minus infinity.

Frequently asked questionsअक्सर पूछे जाने वाले प्रश्न